RobLoach.raylib-nuklear/index.js

// include: shell.js
// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(moduleArg) => Promise<Module>
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define   var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = typeof Module != 'undefined' ? Module : {};

// Determine the runtime environment we are in. You can customize this by
// setting the ENVIRONMENT setting at compile time (see settings.js).

// Attempt to auto-detect the environment
var ENVIRONMENT_IS_WEB = typeof window == 'object';
var ENVIRONMENT_IS_WORKER = typeof WorkerGlobalScope != 'undefined';
// N.b. Electron.js environment is simultaneously a NODE-environment, but
// also a web environment.
var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string' && process.type != 'renderer';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;

if (ENVIRONMENT_IS_NODE) {

}

// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)


// Sometimes an existing Module object exists with properties
// meant to overwrite the default module functionality. Here
// we collect those properties and reapply _after_ we configure
// the current environment's defaults to avoid having to be so
// defensive during initialization.
var moduleOverrides = Object.assign({}, Module);

var arguments_ = [];
var thisProgram = './this.program';
var quit_ = (status, toThrow) => {
  throw toThrow;
};

// `/` should be present at the end if `scriptDirectory` is not empty
var scriptDirectory = '';
function locateFile(path) {
  if (Module['locateFile']) {
    return Module['locateFile'](path, scriptDirectory);
  }
  return scriptDirectory + path;
}

// Hooks that are implemented differently in different runtime environments.
var readAsync, readBinary;

if (ENVIRONMENT_IS_NODE) {
  if (typeof process == 'undefined' || !process.release || process.release.name !== 'node') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

  var nodeVersion = process.versions.node;
  var numericVersion = nodeVersion.split('.').slice(0, 3);
  numericVersion = (numericVersion[0] * 10000) + (numericVersion[1] * 100) + (numericVersion[2].split('-')[0] * 1);
  var minVersion = 160000;
  if (numericVersion < 160000) {
    throw new Error('This emscripten-generated code requires node v16.0.0 (detected v' + nodeVersion + ')');
  }

  // These modules will usually be used on Node.js. Load them eagerly to avoid
  // the complexity of lazy-loading.
  var fs = require('fs');
  var nodePath = require('path');

  scriptDirectory = __dirname + '/';

// include: node_shell_read.js
readBinary = (filename) => {
  // We need to re-wrap `file://` strings to URLs.
  filename = isFileURI(filename) ? new URL(filename) : filename;
  var ret = fs.readFileSync(filename);
  assert(Buffer.isBuffer(ret));
  return ret;
};

readAsync = async (filename, binary = true) => {
  // See the comment in the `readBinary` function.
  filename = isFileURI(filename) ? new URL(filename) : filename;
  var ret = fs.readFileSync(filename, binary ? undefined : 'utf8');
  assert(binary ? Buffer.isBuffer(ret) : typeof ret == 'string');
  return ret;
};
// end include: node_shell_read.js
  if (!Module['thisProgram'] && process.argv.length > 1) {
    thisProgram = process.argv[1].replace(/\\/g, '/');
  }

  arguments_ = process.argv.slice(2);

  if (typeof module != 'undefined') {
    module['exports'] = Module;
  }

  quit_ = (status, toThrow) => {
    process.exitCode = status;
    throw toThrow;
  };

} else
if (ENVIRONMENT_IS_SHELL) {

  if ((typeof process == 'object' && typeof require === 'function') || typeof window == 'object' || typeof WorkerGlobalScope != 'undefined') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

} else

// Note that this includes Node.js workers when relevant (pthreads is enabled).
// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
// ENVIRONMENT_IS_NODE.
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
  if (ENVIRONMENT_IS_WORKER) { // Check worker, not web, since window could be polyfilled
    scriptDirectory = self.location.href;
  } else if (typeof document != 'undefined' && document.currentScript) { // web
    scriptDirectory = document.currentScript.src;
  }
  // blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
  // otherwise, slice off the final part of the url to find the script directory.
  // if scriptDirectory does not contain a slash, lastIndexOf will return -1,
  // and scriptDirectory will correctly be replaced with an empty string.
  // If scriptDirectory contains a query (starting with ?) or a fragment (starting with #),
  // they are removed because they could contain a slash.
  if (scriptDirectory.startsWith('blob:')) {
    scriptDirectory = '';
  } else {
    scriptDirectory = scriptDirectory.slice(0, scriptDirectory.replace(/[?#].*/, '').lastIndexOf('/')+1);
  }

  if (!(typeof window == 'object' || typeof WorkerGlobalScope != 'undefined')) throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

  {
// include: web_or_worker_shell_read.js
if (ENVIRONMENT_IS_WORKER) {
    readBinary = (url) => {
      var xhr = new XMLHttpRequest();
      xhr.open('GET', url, false);
      xhr.responseType = 'arraybuffer';
      xhr.send(null);
      return new Uint8Array(/** @type{!ArrayBuffer} */(xhr.response));
    };
  }

  readAsync = async (url) => {
    // Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
    // See https://github.com/github/fetch/pull/92#issuecomment-140665932
    // Cordova or Electron apps are typically loaded from a file:// url.
    // So use XHR on webview if URL is a file URL.
    if (isFileURI(url)) {
      return new Promise((resolve, reject) => {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, true);
        xhr.responseType = 'arraybuffer';
        xhr.onload = () => {
          if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
            resolve(xhr.response);
            return;
          }
          reject(xhr.status);
        };
        xhr.onerror = reject;
        xhr.send(null);
      });
    }
    var response = await fetch(url, { credentials: 'same-origin' });
    if (response.ok) {
      return response.arrayBuffer();
    }
    throw new Error(response.status + ' : ' + response.url);
  };
// end include: web_or_worker_shell_read.js
  }
} else
{
  throw new Error('environment detection error');
}

var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.error.bind(console);

// Merge back in the overrides
Object.assign(Module, moduleOverrides);
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used.
moduleOverrides = null;
checkIncomingModuleAPI();

// Emit code to handle expected values on the Module object. This applies Module.x
// to the proper local x. This has two benefits: first, we only emit it if it is
// expected to arrive, and second, by using a local everywhere else that can be
// minified.

if (Module['arguments']) arguments_ = Module['arguments'];legacyModuleProp('arguments', 'arguments_');

if (Module['thisProgram']) thisProgram = Module['thisProgram'];legacyModuleProp('thisProgram', 'thisProgram');

// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
// Assertions on removed incoming Module JS APIs.
assert(typeof Module['memoryInitializerPrefixURL'] == 'undefined', 'Module.memoryInitializerPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['pthreadMainPrefixURL'] == 'undefined', 'Module.pthreadMainPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['cdInitializerPrefixURL'] == 'undefined', 'Module.cdInitializerPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['filePackagePrefixURL'] == 'undefined', 'Module.filePackagePrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['read'] == 'undefined', 'Module.read option was removed');
assert(typeof Module['readAsync'] == 'undefined', 'Module.readAsync option was removed (modify readAsync in JS)');
assert(typeof Module['readBinary'] == 'undefined', 'Module.readBinary option was removed (modify readBinary in JS)');
assert(typeof Module['setWindowTitle'] == 'undefined', 'Module.setWindowTitle option was removed (modify emscripten_set_window_title in JS)');
assert(typeof Module['TOTAL_MEMORY'] == 'undefined', 'Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY');
legacyModuleProp('asm', 'wasmExports');
legacyModuleProp('readAsync', 'readAsync');
legacyModuleProp('readBinary', 'readBinary');
legacyModuleProp('setWindowTitle', 'setWindowTitle');
var IDBFS = 'IDBFS is no longer included by default; build with -lidbfs.js';
var PROXYFS = 'PROXYFS is no longer included by default; build with -lproxyfs.js';
var WORKERFS = 'WORKERFS is no longer included by default; build with -lworkerfs.js';
var FETCHFS = 'FETCHFS is no longer included by default; build with -lfetchfs.js';
var ICASEFS = 'ICASEFS is no longer included by default; build with -licasefs.js';
var JSFILEFS = 'JSFILEFS is no longer included by default; build with -ljsfilefs.js';
var OPFS = 'OPFS is no longer included by default; build with -lopfs.js';

var NODEFS = 'NODEFS is no longer included by default; build with -lnodefs.js';

assert(!ENVIRONMENT_IS_SHELL, 'shell environment detected but not enabled at build time.  Add `shell` to `-sENVIRONMENT` to enable.');

// end include: shell.js

// include: preamble.js
// === Preamble library stuff ===

// Documentation for the public APIs defined in this file must be updated in:
//    site/source/docs/api_reference/preamble.js.rst
// A prebuilt local version of the documentation is available at:
//    site/build/text/docs/api_reference/preamble.js.txt
// You can also build docs locally as HTML or other formats in site/
// An online HTML version (which may be of a different version of Emscripten)
//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html

var wasmBinary = Module['wasmBinary'];legacyModuleProp('wasmBinary', 'wasmBinary');

if (typeof WebAssembly != 'object') {
  err('no native wasm support detected');
}

// Wasm globals

var wasmMemory;

//========================================
// Runtime essentials
//========================================

// whether we are quitting the application. no code should run after this.
// set in exit() and abort()
var ABORT = false;

// set by exit() and abort().  Passed to 'onExit' handler.
// NOTE: This is also used as the process return code code in shell environments
// but only when noExitRuntime is false.
var EXITSTATUS;

// In STRICT mode, we only define assert() when ASSERTIONS is set.  i.e. we
// don't define it at all in release modes.  This matches the behaviour of
// MINIMAL_RUNTIME.
// TODO(sbc): Make this the default even without STRICT enabled.
/** @type {function(*, string=)} */
function assert(condition, text) {
  if (!condition) {
    abort('Assertion failed' + (text ? ': ' + text : ''));
  }
}

// We used to include malloc/free by default in the past. Show a helpful error in
// builds with assertions.

// Memory management

var HEAP,
/** @type {!Int8Array} */
  HEAP8,
/** @type {!Uint8Array} */
  HEAPU8,
/** @type {!Int16Array} */
  HEAP16,
/** @type {!Uint16Array} */
  HEAPU16,
/** @type {!Int32Array} */
  HEAP32,
/** @type {!Uint32Array} */
  HEAPU32,
/** @type {!Float32Array} */
  HEAPF32,
/* BigInt64Array type is not correctly defined in closure
/** not-@type {!BigInt64Array} */
  HEAP64,
/* BigUint64Array type is not correctly defined in closure
/** not-t@type {!BigUint64Array} */
  HEAPU64,
/** @type {!Float64Array} */
  HEAPF64;

var runtimeInitialized = false;

/**
 * Indicates whether filename is delivered via file protocol (as opposed to http/https)
 * @noinline
 */
var isFileURI = (filename) => filename.startsWith('file://');

// include: runtime_shared.js
// include: runtime_stack_check.js
// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
function writeStackCookie() {
  var max = _emscripten_stack_get_end();
  assert((max & 3) == 0);
  // If the stack ends at address zero we write our cookies 4 bytes into the
  // stack.  This prevents interference with SAFE_HEAP and ASAN which also
  // monitor writes to address zero.
  if (max == 0) {
    max += 4;
  }
  // The stack grow downwards towards _emscripten_stack_get_end.
  // We write cookies to the final two words in the stack and detect if they are
  // ever overwritten.
  HEAPU32[((max)>>2)] = 0x02135467;
  HEAPU32[(((max)+(4))>>2)] = 0x89BACDFE;
  // Also test the global address 0 for integrity.
  HEAPU32[((0)>>2)] = 1668509029;
}

function checkStackCookie() {
  if (ABORT) return;
  var max = _emscripten_stack_get_end();
  // See writeStackCookie().
  if (max == 0) {
    max += 4;
  }
  var cookie1 = HEAPU32[((max)>>2)];
  var cookie2 = HEAPU32[(((max)+(4))>>2)];
  if (cookie1 != 0x02135467 || cookie2 != 0x89BACDFE) {
    abort(`Stack overflow! Stack cookie has been overwritten at ${ptrToString(max)}, expected hex dwords 0x89BACDFE and 0x2135467, but received ${ptrToString(cookie2)} ${ptrToString(cookie1)}`);
  }
  // Also test the global address 0 for integrity.
  if (HEAPU32[((0)>>2)] != 0x63736d65 /* 'emsc' */) {
    abort('Runtime error: The application has corrupted its heap memory area (address zero)!');
  }
}
// end include: runtime_stack_check.js
// include: runtime_exceptions.js
// end include: runtime_exceptions.js
// include: runtime_debug.js
// Endianness check
(() => {
  var h16 = new Int16Array(1);
  var h8 = new Int8Array(h16.buffer);
  h16[0] = 0x6373;
  if (h8[0] !== 0x73 || h8[1] !== 0x63) throw 'Runtime error: expected the system to be little-endian! (Run with -sSUPPORT_BIG_ENDIAN to bypass)';
})();

if (Module['ENVIRONMENT']) {
  throw new Error('Module.ENVIRONMENT has been deprecated. To force the environment, use the ENVIRONMENT compile-time option (for example, -sENVIRONMENT=web or -sENVIRONMENT=node)');
}

function legacyModuleProp(prop, newName, incoming=true) {
  if (!Object.getOwnPropertyDescriptor(Module, prop)) {
    Object.defineProperty(Module, prop, {
      configurable: true,
      get() {
        let extra = incoming ? ' (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)' : '';
        abort(`\`Module.${prop}\` has been replaced by \`${newName}\`` + extra);

      }
    });
  }
}

function ignoredModuleProp(prop) {
  if (Object.getOwnPropertyDescriptor(Module, prop)) {
    abort(`\`Module.${prop}\` was supplied but \`${prop}\` not included in INCOMING_MODULE_JS_API`);
  }
}

// forcing the filesystem exports a few things by default
function isExportedByForceFilesystem(name) {
  return name === 'FS_createPath' ||
         name === 'FS_createDataFile' ||
         name === 'FS_createPreloadedFile' ||
         name === 'FS_unlink' ||
         name === 'addRunDependency' ||
         // The old FS has some functionality that WasmFS lacks.
         name === 'FS_createLazyFile' ||
         name === 'FS_createDevice' ||
         name === 'removeRunDependency';
}

/**
 * Intercept access to a global symbol.  This enables us to give informative
 * warnings/errors when folks attempt to use symbols they did not include in
 * their build, or no symbols that no longer exist.
 */
function hookGlobalSymbolAccess(sym, func) {
  if (typeof globalThis != 'undefined' && !Object.getOwnPropertyDescriptor(globalThis, sym)) {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get() {
        func();
        return undefined;
      }
    });
  }
}

function missingGlobal(sym, msg) {
  hookGlobalSymbolAccess(sym, () => {
    warnOnce(`\`${sym}\` is not longer defined by emscripten. ${msg}`);
  });
}

missingGlobal('buffer', 'Please use HEAP8.buffer or wasmMemory.buffer');
missingGlobal('asm', 'Please use wasmExports instead');

function missingLibrarySymbol(sym) {
  hookGlobalSymbolAccess(sym, () => {
    // Can't `abort()` here because it would break code that does runtime
    // checks.  e.g. `if (typeof SDL === 'undefined')`.
    var msg = `\`${sym}\` is a library symbol and not included by default; add it to your library.js __deps or to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE on the command line`;
    // DEFAULT_LIBRARY_FUNCS_TO_INCLUDE requires the name as it appears in
    // library.js, which means $name for a JS name with no prefix, or name
    // for a JS name like _name.
    var librarySymbol = sym;
    if (!librarySymbol.startsWith('_')) {
      librarySymbol = '$' + sym;
    }
    msg += ` (e.g. -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='${librarySymbol}')`;
    if (isExportedByForceFilesystem(sym)) {
      msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
    }
    warnOnce(msg);
  });

  // Any symbol that is not included from the JS library is also (by definition)
  // not exported on the Module object.
  unexportedRuntimeSymbol(sym);
}

function unexportedRuntimeSymbol(sym) {
  if (!Object.getOwnPropertyDescriptor(Module, sym)) {
    Object.defineProperty(Module, sym, {
      configurable: true,
      get() {
        var msg = `'${sym}' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ)`;
        if (isExportedByForceFilesystem(sym)) {
          msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
        }
        abort(msg);
      }
    });
  }
}

// Used by XXXXX_DEBUG settings to output debug messages.
function dbg(...args) {
  // TODO(sbc): Make this configurable somehow.  Its not always convenient for
  // logging to show up as warnings.
  console.warn(...args);
}
// end include: runtime_debug.js
// include: memoryprofiler.js
// end include: memoryprofiler.js


function updateMemoryViews() {
  var b = wasmMemory.buffer;
  Module['HEAP8'] = HEAP8 = new Int8Array(b);
  Module['HEAP16'] = HEAP16 = new Int16Array(b);
  Module['HEAPU8'] = HEAPU8 = new Uint8Array(b);
  Module['HEAPU16'] = HEAPU16 = new Uint16Array(b);
  Module['HEAP32'] = HEAP32 = new Int32Array(b);
  Module['HEAPU32'] = HEAPU32 = new Uint32Array(b);
  Module['HEAPF32'] = HEAPF32 = new Float32Array(b);
  Module['HEAPF64'] = HEAPF64 = new Float64Array(b);
  Module['HEAP64'] = HEAP64 = new BigInt64Array(b);
  Module['HEAPU64'] = HEAPU64 = new BigUint64Array(b);
}

// end include: runtime_shared.js
assert(!Module['STACK_SIZE'], 'STACK_SIZE can no longer be set at runtime.  Use -sSTACK_SIZE at link time')

assert(typeof Int32Array != 'undefined' && typeof Float64Array !== 'undefined' && Int32Array.prototype.subarray != undefined && Int32Array.prototype.set != undefined,
       'JS engine does not provide full typed array support');

// If memory is defined in wasm, the user can't provide it, or set INITIAL_MEMORY
assert(!Module['wasmMemory'], 'Use of `wasmMemory` detected.  Use -sIMPORTED_MEMORY to define wasmMemory externally');
assert(!Module['INITIAL_MEMORY'], 'Detected runtime INITIAL_MEMORY setting.  Use -sIMPORTED_MEMORY to define wasmMemory dynamically');

function preRun() {
  if (Module['preRun']) {
    if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
    while (Module['preRun'].length) {
      addOnPreRun(Module['preRun'].shift());
    }
  }
  callRuntimeCallbacks(onPreRuns);
}

function initRuntime() {
  assert(!runtimeInitialized);
  runtimeInitialized = true;

  checkStackCookie();

  if (!Module['noFSInit'] && !FS.initialized) FS.init();
TTY.init();

  wasmExports['__wasm_call_ctors']();

  FS.ignorePermissions = false;
}

function preMain() {
  checkStackCookie();
  
}

function postRun() {
  checkStackCookie();

  if (Module['postRun']) {
    if (typeof Module['postRun'] == 'function') Module['postRun'] = [Module['postRun']];
    while (Module['postRun'].length) {
      addOnPostRun(Module['postRun'].shift());
    }
  }

  callRuntimeCallbacks(onPostRuns);
}

// A counter of dependencies for calling run(). If we need to
// do asynchronous work before running, increment this and
// decrement it. Incrementing must happen in a place like
// Module.preRun (used by emcc to add file preloading).
// Note that you can add dependencies in preRun, even though
// it happens right before run - run will be postponed until
// the dependencies are met.
var runDependencies = 0;
var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
var runDependencyTracking = {};
var runDependencyWatcher = null;

function getUniqueRunDependency(id) {
  var orig = id;
  while (1) {
    if (!runDependencyTracking[id]) return id;
    id = orig + Math.random();
  }
}

function addRunDependency(id) {
  runDependencies++;

  Module['monitorRunDependencies']?.(runDependencies);

  if (id) {
    assert(!runDependencyTracking[id]);
    runDependencyTracking[id] = 1;
    if (runDependencyWatcher === null && typeof setInterval != 'undefined') {
      // Check for missing dependencies every few seconds
      runDependencyWatcher = setInterval(() => {
        if (ABORT) {
          clearInterval(runDependencyWatcher);
          runDependencyWatcher = null;
          return;
        }
        var shown = false;
        for (var dep in runDependencyTracking) {
          if (!shown) {
            shown = true;
            err('still waiting on run dependencies:');
          }
          err(`dependency: ${dep}`);
        }
        if (shown) {
          err('(end of list)');
        }
      }, 10000);
    }
  } else {
    err('warning: run dependency added without ID');
  }
}

function removeRunDependency(id) {
  runDependencies--;

  Module['monitorRunDependencies']?.(runDependencies);

  if (id) {
    assert(runDependencyTracking[id]);
    delete runDependencyTracking[id];
  } else {
    err('warning: run dependency removed without ID');
  }
  if (runDependencies == 0) {
    if (runDependencyWatcher !== null) {
      clearInterval(runDependencyWatcher);
      runDependencyWatcher = null;
    }
    if (dependenciesFulfilled) {
      var callback = dependenciesFulfilled;
      dependenciesFulfilled = null;
      callback(); // can add another dependenciesFulfilled
    }
  }
}

/** @param {string|number=} what */
function abort(what) {
  Module['onAbort']?.(what);

  what = 'Aborted(' + what + ')';
  // TODO(sbc): Should we remove printing and leave it up to whoever
  // catches the exception?
  err(what);

  ABORT = true;

  // Use a wasm runtime error, because a JS error might be seen as a foreign
  // exception, which means we'd run destructors on it. We need the error to
  // simply make the program stop.
  // FIXME This approach does not work in Wasm EH because it currently does not assume
  // all RuntimeErrors are from traps; it decides whether a RuntimeError is from
  // a trap or not based on a hidden field within the object. So at the moment
  // we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
  // allows this in the wasm spec.

  // Suppress closure compiler warning here. Closure compiler's builtin extern
  // definition for WebAssembly.RuntimeError claims it takes no arguments even
  // though it can.
  // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
  /** @suppress {checkTypes} */
  var e = new WebAssembly.RuntimeError(what);

  // Throw the error whether or not MODULARIZE is set because abort is used
  // in code paths apart from instantiation where an exception is expected
  // to be thrown when abort is called.
  throw e;
}

function createExportWrapper(name, nargs) {
  return (...args) => {
    assert(runtimeInitialized, `native function \`${name}\` called before runtime initialization`);
    var f = wasmExports[name];
    assert(f, `exported native function \`${name}\` not found`);
    // Only assert for too many arguments. Too few can be valid since the missing arguments will be zero filled.
    assert(args.length <= nargs, `native function \`${name}\` called with ${args.length} args but expects ${nargs}`);
    return f(...args);
  };
}

var wasmBinaryFile;
function findWasmBinary() {
    return locateFile('index.wasm');
}

function getBinarySync(file) {
  if (file == wasmBinaryFile && wasmBinary) {
    return new Uint8Array(wasmBinary);
  }
  if (readBinary) {
    return readBinary(file);
  }
  throw 'both async and sync fetching of the wasm failed';
}

async function getWasmBinary(binaryFile) {
  // If we don't have the binary yet, load it asynchronously using readAsync.
  if (!wasmBinary) {
    // Fetch the binary using readAsync
    try {
      var response = await readAsync(binaryFile);
      return new Uint8Array(response);
    } catch {
      // Fall back to getBinarySync below;
    }
  }

  // Otherwise, getBinarySync should be able to get it synchronously
  return getBinarySync(binaryFile);
}

async function instantiateArrayBuffer(binaryFile, imports) {
  try {
    var binary = await getWasmBinary(binaryFile);
    var instance = await WebAssembly.instantiate(binary, imports);
    return instance;
  } catch (reason) {
    err(`failed to asynchronously prepare wasm: ${reason}`);

    // Warn on some common problems.
    if (isFileURI(wasmBinaryFile)) {
      err(`warning: Loading from a file URI (${wasmBinaryFile}) is not supported in most browsers. See https://emscripten.org/docs/getting_started/FAQ.html#how-do-i-run-a-local-webserver-for-testing-why-does-my-program-stall-in-downloading-or-preparing`);
    }
    abort(reason);
  }
}

async function instantiateAsync(binary, binaryFile, imports) {
  if (!binary && typeof WebAssembly.instantiateStreaming == 'function'
      // Don't use streaming for file:// delivered objects in a webview, fetch them synchronously.
      && !isFileURI(binaryFile)
      // Avoid instantiateStreaming() on Node.js environment for now, as while
      // Node.js v18.1.0 implements it, it does not have a full fetch()
      // implementation yet.
      //
      // Reference:
      //   https://github.com/emscripten-core/emscripten/pull/16917
      && !ENVIRONMENT_IS_NODE
     ) {
    try {
      var response = fetch(binaryFile, { credentials: 'same-origin' });
      var instantiationResult = await WebAssembly.instantiateStreaming(response, imports);
      return instantiationResult;
    } catch (reason) {
      // We expect the most common failure cause to be a bad MIME type for the binary,
      // in which case falling back to ArrayBuffer instantiation should work.
      err(`wasm streaming compile failed: ${reason}`);
      err('falling back to ArrayBuffer instantiation');
      // fall back of instantiateArrayBuffer below
    };
  }
  return instantiateArrayBuffer(binaryFile, imports);
}

function getWasmImports() {
  // prepare imports
  return {
    'env': wasmImports,
    'wasi_snapshot_preview1': wasmImports,
  }
}

// Create the wasm instance.
// Receives the wasm imports, returns the exports.
async function createWasm() {
  // Load the wasm module and create an instance of using native support in the JS engine.
  // handle a generated wasm instance, receiving its exports and
  // performing other necessary setup
  /** @param {WebAssembly.Module=} module*/
  function receiveInstance(instance, module) {
    wasmExports = instance.exports;

    

    wasmMemory = wasmExports['memory'];
    
    assert(wasmMemory, 'memory not found in wasm exports');
    updateMemoryViews();

    wasmTable = wasmExports['__indirect_function_table'];
    
    assert(wasmTable, 'table not found in wasm exports');

    removeRunDependency('wasm-instantiate');
    return wasmExports;
  }
  // wait for the pthread pool (if any)
  addRunDependency('wasm-instantiate');

  // Prefer streaming instantiation if available.
  // Async compilation can be confusing when an error on the page overwrites Module
  // (for example, if the order of elements is wrong, and the one defining Module is
  // later), so we save Module and check it later.
  var trueModule = Module;
  function receiveInstantiationResult(result) {
    // 'result' is a ResultObject object which has both the module and instance.
    // receiveInstance() will swap in the exports (to Module.asm) so they can be called
    assert(Module === trueModule, 'the Module object should not be replaced during async compilation - perhaps the order of HTML elements is wrong?');
    trueModule = null;
    // TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
    // When the regression is fixed, can restore the above PTHREADS-enabled path.
    return receiveInstance(result['instance']);
  }

  var info = getWasmImports();

  // User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
  // to manually instantiate the Wasm module themselves. This allows pages to
  // run the instantiation parallel to any other async startup actions they are
  // performing.
  // Also pthreads and wasm workers initialize the wasm instance through this
  // path.
  if (Module['instantiateWasm']) {
    return new Promise((resolve, reject) => {
      try {
        Module['instantiateWasm'](info, (mod, inst) => {
          receiveInstance(mod, inst);
          resolve(mod.exports);
        });
      } catch(e) {
        err(`Module.instantiateWasm callback failed with error: ${e}`);
        reject(e);
      }
    });
  }

  wasmBinaryFile ??= findWasmBinary();

    var result = await instantiateAsync(wasmBinary, wasmBinaryFile, info);
    var exports = receiveInstantiationResult(result);
    return exports;
}

// === Body ===

var ASM_CONSTS = {
  151192: () => { if (document.fullscreenElement) return 1; },  
 151238: () => { return document.getElementById('canvas').width; },  
 151290: () => { return parseInt(document.getElementById('canvas').style.width); },  
 151358: () => { document.exitFullscreen(); },  
 151385: () => { setTimeout(function() { Module.requestFullscreen(false, false); }, 100); },  
 151458: () => { if (document.fullscreenElement) return 1; },  
 151504: () => { return document.getElementById('canvas').width; },  
 151556: () => { return screen.width; },  
 151581: () => { document.exitFullscreen(); },  
 151608: () => { setTimeout(function() { Module.requestFullscreen(false, true); setTimeout(function() { canvas.style.width="unset"; }, 100); }, 100); },  
 151741: () => { return window.innerWidth; },  
 151767: () => { return window.innerHeight; },  
 151794: () => { if (document.fullscreenElement) return 1; },  
 151840: () => { return document.getElementById('canvas').width; },  
 151892: () => { return parseInt(document.getElementById('canvas').style.width); },  
 151960: () => { if (document.fullscreenElement) return 1; },  
 152006: () => { return document.getElementById('canvas').width; },  
 152058: () => { return screen.width; },  
 152083: () => { return window.innerWidth; },  
 152109: () => { return window.innerHeight; },  
 152136: () => { if (document.fullscreenElement) return 1; },  
 152182: () => { return document.getElementById('canvas').width; },  
 152234: () => { return screen.width; },  
 152259: () => { document.exitFullscreen(); },  
 152286: () => { if (document.fullscreenElement) return 1; },  
 152332: () => { return document.getElementById('canvas').width; },  
 152384: () => { return parseInt(document.getElementById('canvas').style.width); },  
 152452: () => { document.exitFullscreen(); },  
 152479: ($0) => { document.getElementById('canvas').style.opacity = $0; },  
 152537: () => { return screen.width; },  
 152562: () => { return screen.height; },  
 152588: () => { return window.screenX; },  
 152615: () => { return window.screenY; },  
 152642: ($0) => { navigator.clipboard.writeText(UTF8ToString($0)); },  
 152695: ($0) => { document.getElementById("canvas").style.cursor = UTF8ToString($0); },  
 152766: () => { document.getElementById('canvas').style.cursor = 'none'; },  
 152823: ($0, $1, $2, $3) => { try { navigator.getGamepads()[$0].vibrationActuator.playEffect('dual-rumble', { startDelay: 0, duration: $3, weakMagnitude: $1, strongMagnitude: $2 }); } catch (e) { try { navigator.getGamepads()[$0].hapticActuators[0].pulse($2, $3); } catch (e) { } } },  
 153079: ($0) => { document.getElementById('canvas').style.cursor = UTF8ToString($0); },  
 153150: () => { if (document.fullscreenElement) return 1; },  
 153196: () => { return window.innerWidth; },  
 153222: () => { return window.innerHeight; },  
 153249: () => { if (document.pointerLockElement) return 1; }
};

// end include: preamble.js


  class ExitStatus {
      name = 'ExitStatus';
      constructor(status) {
        this.message = `Program terminated with exit(${status})`;
        this.status = status;
      }
    }

  var callRuntimeCallbacks = (callbacks) => {
      while (callbacks.length > 0) {
        // Pass the module as the first argument.
        callbacks.shift()(Module);
      }
    };
  var onPostRuns = [];
  var addOnPostRun = (cb) => onPostRuns.unshift(cb);

  var onPreRuns = [];
  var addOnPreRun = (cb) => onPreRuns.unshift(cb);


  
    /**
     * @param {number} ptr
     * @param {string} type
     */
  function getValue(ptr, type = 'i8') {
    if (type.endsWith('*')) type = '*';
    switch (type) {
      case 'i1': return HEAP8[ptr];
      case 'i8': return HEAP8[ptr];
      case 'i16': return HEAP16[((ptr)>>1)];
      case 'i32': return HEAP32[((ptr)>>2)];
      case 'i64': return HEAP64[((ptr)>>3)];
      case 'float': return HEAPF32[((ptr)>>2)];
      case 'double': return HEAPF64[((ptr)>>3)];
      case '*': return HEAPU32[((ptr)>>2)];
      default: abort(`invalid type for getValue: ${type}`);
    }
  }

  var noExitRuntime = Module['noExitRuntime'] || true;

  var ptrToString = (ptr) => {
      assert(typeof ptr === 'number');
      // With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
      ptr >>>= 0;
      return '0x' + ptr.toString(16).padStart(8, '0');
    };

  
    /**
     * @param {number} ptr
     * @param {number} value
     * @param {string} type
     */
  function setValue(ptr, value, type = 'i8') {
    if (type.endsWith('*')) type = '*';
    switch (type) {
      case 'i1': HEAP8[ptr] = value; break;
      case 'i8': HEAP8[ptr] = value; break;
      case 'i16': HEAP16[((ptr)>>1)] = value; break;
      case 'i32': HEAP32[((ptr)>>2)] = value; break;
      case 'i64': HEAP64[((ptr)>>3)] = BigInt(value); break;
      case 'float': HEAPF32[((ptr)>>2)] = value; break;
      case 'double': HEAPF64[((ptr)>>3)] = value; break;
      case '*': HEAPU32[((ptr)>>2)] = value; break;
      default: abort(`invalid type for setValue: ${type}`);
    }
  }

  var stackRestore = (val) => __emscripten_stack_restore(val);

  var stackSave = () => _emscripten_stack_get_current();

  var warnOnce = (text) => {
      warnOnce.shown ||= {};
      if (!warnOnce.shown[text]) {
        warnOnce.shown[text] = 1;
        if (ENVIRONMENT_IS_NODE) text = 'warning: ' + text;
        err(text);
      }
    };

  var UTF8Decoder = typeof TextDecoder != 'undefined' ? new TextDecoder() : undefined;
  
    /**
     * Given a pointer 'idx' to a null-terminated UTF8-encoded string in the given
     * array that contains uint8 values, returns a copy of that string as a
     * Javascript String object.
     * heapOrArray is either a regular array, or a JavaScript typed array view.
     * @param {number=} idx
     * @param {number=} maxBytesToRead
     * @return {string}
     */
  var UTF8ArrayToString = (heapOrArray, idx = 0, maxBytesToRead = NaN) => {
      var endIdx = idx + maxBytesToRead;
      var endPtr = idx;
      // TextDecoder needs to know the byte length in advance, it doesn't stop on
      // null terminator by itself.  Also, use the length info to avoid running tiny
      // strings through TextDecoder, since .subarray() allocates garbage.
      // (As a tiny code save trick, compare endPtr against endIdx using a negation,
      // so that undefined/NaN means Infinity)
      while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
  
      if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
        return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
      }
      var str = '';
      // If building with TextDecoder, we have already computed the string length
      // above, so test loop end condition against that
      while (idx < endPtr) {
        // For UTF8 byte structure, see:
        // http://en.wikipedia.org/wiki/UTF-8#Description
        // https://www.ietf.org/rfc/rfc2279.txt
        // https://tools.ietf.org/html/rfc3629
        var u0 = heapOrArray[idx++];
        if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
        var u1 = heapOrArray[idx++] & 63;
        if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
        var u2 = heapOrArray[idx++] & 63;
        if ((u0 & 0xF0) == 0xE0) {
          u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
        } else {
          if ((u0 & 0xF8) != 0xF0) warnOnce('Invalid UTF-8 leading byte ' + ptrToString(u0) + ' encountered when deserializing a UTF-8 string in wasm memory to a JS string!');
          u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (heapOrArray[idx++] & 63);
        }
  
        if (u0 < 0x10000) {
          str += String.fromCharCode(u0);
        } else {
          var ch = u0 - 0x10000;
          str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
        }
      }
      return str;
    };
  
    /**
     * Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the
     * emscripten HEAP, returns a copy of that string as a Javascript String object.
     *
     * @param {number} ptr
     * @param {number=} maxBytesToRead - An optional length that specifies the
     *   maximum number of bytes to read. You can omit this parameter to scan the
     *   string until the first 0 byte. If maxBytesToRead is passed, and the string
     *   at [ptr, ptr+maxBytesToReadr[ contains a null byte in the middle, then the
     *   string will cut short at that byte index (i.e. maxBytesToRead will not
     *   produce a string of exact length [ptr, ptr+maxBytesToRead[) N.B. mixing
     *   frequent uses of UTF8ToString() with and without maxBytesToRead may throw
     *   JS JIT optimizations off, so it is worth to consider consistently using one
     * @return {string}
     */
  var UTF8ToString = (ptr, maxBytesToRead) => {
      assert(typeof ptr == 'number', `UTF8ToString expects a number (got ${typeof ptr})`);
      return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
    };
  var ___assert_fail = (condition, filename, line, func) =>
      abort(`Assertion failed: ${UTF8ToString(condition)}, at: ` + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);

  var PATH = {
  isAbs:(path) => path.charAt(0) === '/',
  splitPath:(filename) => {
        var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
        return splitPathRe.exec(filename).slice(1);
      },
  normalizeArray:(parts, allowAboveRoot) => {
        // if the path tries to go above the root, `up` ends up > 0
        var up = 0;
        for (var i = parts.length - 1; i >= 0; i--) {
          var last = parts[i];
          if (last === '.') {
            parts.splice(i, 1);
          } else if (last === '..') {
            parts.splice(i, 1);
            up++;
          } else if (up) {
            parts.splice(i, 1);
            up--;
          }
        }
        // if the path is allowed to go above the root, restore leading ..s
        if (allowAboveRoot) {
          for (; up; up--) {
            parts.unshift('..');
          }
        }
        return parts;
      },
  normalize:(path) => {
        var isAbsolute = PATH.isAbs(path),
            trailingSlash = path.slice(-1) === '/';
        // Normalize the path
        path = PATH.normalizeArray(path.split('/').filter((p) => !!p), !isAbsolute).join('/');
        if (!path && !isAbsolute) {
          path = '.';
        }
        if (path && trailingSlash) {
          path += '/';
        }
        return (isAbsolute ? '/' : '') + path;
      },
  dirname:(path) => {
        var result = PATH.splitPath(path),
            root = result[0],
            dir = result[1];
        if (!root && !dir) {
          // No dirname whatsoever
          return '.';
        }
        if (dir) {
          // It has a dirname, strip trailing slash
          dir = dir.slice(0, -1);
        }
        return root + dir;
      },
  basename:(path) => path && path.match(/([^\/]+|\/)\/*$/)[1],
  join:(...paths) => PATH.normalize(paths.join('/')),
  join2:(l, r) => PATH.normalize(l + '/' + r),
  };
  
  var initRandomFill = () => {
      // This block is not needed on v19+ since crypto.getRandomValues is builtin
      if (ENVIRONMENT_IS_NODE) {
        var nodeCrypto = require('crypto');
        return (view) => nodeCrypto.randomFillSync(view);
      }
  
      return (view) => crypto.getRandomValues(view);
    };
  var randomFill = (view) => {
      // Lazily init on the first invocation.
      (randomFill = initRandomFill())(view);
    };
  
  
  
  var PATH_FS = {
  resolve:(...args) => {
        var resolvedPath = '',
          resolvedAbsolute = false;
        for (var i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
          var path = (i >= 0) ? args[i] : FS.cwd();
          // Skip empty and invalid entries
          if (typeof path != 'string') {
            throw new TypeError('Arguments to path.resolve must be strings');
          } else if (!path) {
            return ''; // an invalid portion invalidates the whole thing
          }
          resolvedPath = path + '/' + resolvedPath;
          resolvedAbsolute = PATH.isAbs(path);
        }
        // At this point the path should be resolved to a full absolute path, but
        // handle relative paths to be safe (might happen when process.cwd() fails)
        resolvedPath = PATH.normalizeArray(resolvedPath.split('/').filter((p) => !!p), !resolvedAbsolute).join('/');
        return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
      },
  relative:(from, to) => {
        from = PATH_FS.resolve(from).slice(1);
        to = PATH_FS.resolve(to).slice(1);
        function trim(arr) {
          var start = 0;
          for (; start < arr.length; start++) {
            if (arr[start] !== '') break;
          }
          var end = arr.length - 1;
          for (; end >= 0; end--) {
            if (arr[end] !== '') break;
          }
          if (start > end) return [];
          return arr.slice(start, end - start + 1);
        }
        var fromParts = trim(from.split('/'));
        var toParts = trim(to.split('/'));
        var length = Math.min(fromParts.length, toParts.length);
        var samePartsLength = length;
        for (var i = 0; i < length; i++) {
          if (fromParts[i] !== toParts[i]) {
            samePartsLength = i;
            break;
          }
        }
        var outputParts = [];
        for (var i = samePartsLength; i < fromParts.length; i++) {
          outputParts.push('..');
        }
        outputParts = outputParts.concat(toParts.slice(samePartsLength));
        return outputParts.join('/');
      },
  };
  
  
  
  var FS_stdin_getChar_buffer = [];
  
  var lengthBytesUTF8 = (str) => {
      var len = 0;
      for (var i = 0; i < str.length; ++i) {
        // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
        // unit, not a Unicode code point of the character! So decode
        // UTF16->UTF32->UTF8.
        // See http://unicode.org/faq/utf_bom.html#utf16-3
        var c = str.charCodeAt(i); // possibly a lead surrogate
        if (c <= 0x7F) {
          len++;
        } else if (c <= 0x7FF) {
          len += 2;
        } else if (c >= 0xD800 && c <= 0xDFFF) {
          len += 4; ++i;
        } else {
          len += 3;
        }
      }
      return len;
    };
  
  var stringToUTF8Array = (str, heap, outIdx, maxBytesToWrite) => {
      assert(typeof str === 'string', `stringToUTF8Array expects a string (got ${typeof str})`);
      // Parameter maxBytesToWrite is not optional. Negative values, 0, null,
      // undefined and false each don't write out any bytes.
      if (!(maxBytesToWrite > 0))
        return 0;
  
      var startIdx = outIdx;
      var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
      for (var i = 0; i < str.length; ++i) {
        // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
        // unit, not a Unicode code point of the character! So decode
        // UTF16->UTF32->UTF8.
        // See http://unicode.org/faq/utf_bom.html#utf16-3
        // For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description
        // and https://www.ietf.org/rfc/rfc2279.txt
        // and https://tools.ietf.org/html/rfc3629
        var u = str.charCodeAt(i); // possibly a lead surrogate
        if (u >= 0xD800 && u <= 0xDFFF) {
          var u1 = str.charCodeAt(++i);
          u = 0x10000 + ((u & 0x3FF) << 10) | (u1 & 0x3FF);
        }
        if (u <= 0x7F) {
          if (outIdx >= endIdx) break;
          heap[outIdx++] = u;
        } else if (u <= 0x7FF) {
          if (outIdx + 1 >= endIdx) break;
          heap[outIdx++] = 0xC0 | (u >> 6);
          heap[outIdx++] = 0x80 | (u & 63);
        } else if (u <= 0xFFFF) {
          if (outIdx + 2 >= endIdx) break;
          heap[outIdx++] = 0xE0 | (u >> 12);
          heap[outIdx++] = 0x80 | ((u >> 6) & 63);
          heap[outIdx++] = 0x80 | (u & 63);
        } else {
          if (outIdx + 3 >= endIdx) break;
          if (u > 0x10FFFF) warnOnce('Invalid Unicode code point ' + ptrToString(u) + ' encountered when serializing a JS string to a UTF-8 string in wasm memory! (Valid unicode code points should be in range 0-0x10FFFF).');
          heap[outIdx++] = 0xF0 | (u >> 18);
          heap[outIdx++] = 0x80 | ((u >> 12) & 63);
          heap[outIdx++] = 0x80 | ((u >> 6) & 63);
          heap[outIdx++] = 0x80 | (u & 63);
        }
      }
      // Null-terminate the pointer to the buffer.
      heap[outIdx] = 0;
      return outIdx - startIdx;
    };
  /** @type {function(string, boolean=, number=)} */
  var intArrayFromString = (stringy, dontAddNull, length) => {
      var len = length > 0 ? length : lengthBytesUTF8(stringy)+1;
      var u8array = new Array(len);
      var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
      if (dontAddNull) u8array.length = numBytesWritten;
      return u8array;
    };
  var FS_stdin_getChar = () => {
      if (!FS_stdin_getChar_buffer.length) {
        var result = null;
        if (ENVIRONMENT_IS_NODE) {
          // we will read data by chunks of BUFSIZE
          var BUFSIZE = 256;
          var buf = Buffer.alloc(BUFSIZE);
          var bytesRead = 0;
  
          // For some reason we must suppress a closure warning here, even though
          // fd definitely exists on process.stdin, and is even the proper way to
          // get the fd of stdin,
          // https://github.com/nodejs/help/issues/2136#issuecomment-523649904
          // This started to happen after moving this logic out of library_tty.js,
          // so it is related to the surrounding code in some unclear manner.
          /** @suppress {missingProperties} */
          var fd = process.stdin.fd;
  
          try {
            bytesRead = fs.readSync(fd, buf, 0, BUFSIZE);
          } catch(e) {
            // Cross-platform differences: on Windows, reading EOF throws an
            // exception, but on other OSes, reading EOF returns 0. Uniformize
            // behavior by treating the EOF exception to return 0.
            if (e.toString().includes('EOF')) bytesRead = 0;
            else throw e;
          }
  
          if (bytesRead > 0) {
            result = buf.slice(0, bytesRead).toString('utf-8');
          }
        } else
        if (typeof window != 'undefined' &&
          typeof window.prompt == 'function') {
          // Browser.
          result = window.prompt('Input: ');  // returns null on cancel
          if (result !== null) {
            result += '\n';
          }
        } else
        {}
        if (!result) {
          return null;
        }
        FS_stdin_getChar_buffer = intArrayFromString(result, true);
      }
      return FS_stdin_getChar_buffer.shift();
    };
  var TTY = {
  ttys:[],
  init() {
        // https://github.com/emscripten-core/emscripten/pull/1555
        // if (ENVIRONMENT_IS_NODE) {
        //   // currently, FS.init does not distinguish if process.stdin is a file or TTY
        //   // device, it always assumes it's a TTY device. because of this, we're forcing
        //   // process.stdin to UTF8 encoding to at least make stdin reading compatible
        //   // with text files until FS.init can be refactored.
        //   process.stdin.setEncoding('utf8');
        // }
      },
  shutdown() {
        // https://github.com/emscripten-core/emscripten/pull/1555
        // if (ENVIRONMENT_IS_NODE) {
        //   // inolen: any idea as to why node -e 'process.stdin.read()' wouldn't exit immediately (with process.stdin being a tty)?
        //   // isaacs: because now it's reading from the stream, you've expressed interest in it, so that read() kicks off a _read() which creates a ReadReq operation
        //   // inolen: I thought read() in that case was a synchronous operation that just grabbed some amount of buffered data if it exists?
        //   // isaacs: it is. but it also triggers a _read() call, which calls readStart() on the handle
        //   // isaacs: do process.stdin.pause() and i'd think it'd probably close the pending call
        //   process.stdin.pause();
        // }
      },
  register(dev, ops) {
        TTY.ttys[dev] = { input: [], output: [], ops: ops };
        FS.registerDevice(dev, TTY.stream_ops);
      },
  stream_ops:{
  open(stream) {
          var tty = TTY.ttys[stream.node.rdev];
          if (!tty) {
            throw new FS.ErrnoError(43);
          }
          stream.tty = tty;
          stream.seekable = false;
        },
  close(stream) {
          // flush any pending line data
          stream.tty.ops.fsync(stream.tty);
        },
  fsync(stream) {
          stream.tty.ops.fsync(stream.tty);
        },
  read(stream, buffer, offset, length, pos /* ignored */) {
          if (!stream.tty || !stream.tty.ops.get_char) {
            throw new FS.ErrnoError(60);
          }
          var bytesRead = 0;
          for (var i = 0; i < length; i++) {
            var result;
            try {
              result = stream.tty.ops.get_char(stream.tty);
            } catch (e) {
              throw new FS.ErrnoError(29);
            }
            if (result === undefined && bytesRead === 0) {
              throw new FS.ErrnoError(6);
            }
            if (result === null || result === undefined) break;
            bytesRead++;
            buffer[offset+i] = result;
          }
          if (bytesRead) {
            stream.node.atime = Date.now();
          }
          return bytesRead;
        },
  write(stream, buffer, offset, length, pos) {
          if (!stream.tty || !stream.tty.ops.put_char) {
            throw new FS.ErrnoError(60);
          }
          try {
            for (var i = 0; i < length; i++) {
              stream.tty.ops.put_char(stream.tty, buffer[offset+i]);
            }
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
          if (length) {
            stream.node.mtime = stream.node.ctime = Date.now();
          }
          return i;
        },
  },
  default_tty_ops:{
  get_char(tty) {
          return FS_stdin_getChar();
        },
  put_char(tty, val) {
          if (val === null || val === 10) {
            out(UTF8ArrayToString(tty.output));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
          }
        },
  fsync(tty) {
          if (tty.output?.length > 0) {
            out(UTF8ArrayToString(tty.output));
            tty.output = [];
          }
        },
  ioctl_tcgets(tty) {
          // typical setting
          return {
            c_iflag: 25856,
            c_oflag: 5,
            c_cflag: 191,
            c_lflag: 35387,
            c_cc: [
              0x03, 0x1c, 0x7f, 0x15, 0x04, 0x00, 0x01, 0x00, 0x11, 0x13, 0x1a, 0x00,
              0x12, 0x0f, 0x17, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            ]
          };
        },
  ioctl_tcsets(tty, optional_actions, data) {
          // currently just ignore
          return 0;
        },
  ioctl_tiocgwinsz(tty) {
          return [24, 80];
        },
  },
  default_tty1_ops:{
  put_char(tty, val) {
          if (val === null || val === 10) {
            err(UTF8ArrayToString(tty.output));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val);
          }
        },
  fsync(tty) {
          if (tty.output?.length > 0) {
            err(UTF8ArrayToString(tty.output));
            tty.output = [];
          }
        },
  },
  };
  
  
  var zeroMemory = (address, size) => {
      HEAPU8.fill(0, address, address + size);
    };
  
  var alignMemory = (size, alignment) => {
      assert(alignment, "alignment argument is required");
      return Math.ceil(size / alignment) * alignment;
    };
  var mmapAlloc = (size) => {
      abort('internal error: mmapAlloc called but `emscripten_builtin_memalign` native symbol not exported');
    };
  var MEMFS = {
  ops_table:null,
  mount(mount) {
        return MEMFS.createNode(null, '/', 16895, 0);
      },
  createNode(parent, name, mode, dev) {
        if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
          // no supported
          throw new FS.ErrnoError(63);
        }
        MEMFS.ops_table ||= {
          dir: {
            node: {
              getattr: MEMFS.node_ops.getattr,
              setattr: MEMFS.node_ops.setattr,
              lookup: MEMFS.node_ops.lookup,
              mknod: MEMFS.node_ops.mknod,
              rename: MEMFS.node_ops.rename,
              unlink: MEMFS.node_ops.unlink,
              rmdir: MEMFS.node_ops.rmdir,
              readdir: MEMFS.node_ops.readdir,
              symlink: MEMFS.node_ops.symlink
            },
            stream: {
              llseek: MEMFS.stream_ops.llseek
            }
          },
          file: {
            node: {
              getattr: MEMFS.node_ops.getattr,
              setattr: MEMFS.node_ops.setattr
            },
            stream: {
              llseek: MEMFS.stream_ops.llseek,
              read: MEMFS.stream_ops.read,
              write: MEMFS.stream_ops.write,
              allocate: MEMFS.stream_ops.allocate,
              mmap: MEMFS.stream_ops.mmap,
              msync: MEMFS.stream_ops.msync
            }
          },
          link: {
            node: {
              getattr: MEMFS.node_ops.getattr,
              setattr: MEMFS.node_ops.setattr,
              readlink: MEMFS.node_ops.readlink
            },
            stream: {}
          },
          chrdev: {
            node: {
              getattr: MEMFS.node_ops.getattr,
              setattr: MEMFS.node_ops.setattr
            },
            stream: FS.chrdev_stream_ops
          }
        };
        var node = FS.createNode(parent, name, mode, dev);
        if (FS.isDir(node.mode)) {
          node.node_ops = MEMFS.ops_table.dir.node;
          node.stream_ops = MEMFS.ops_table.dir.stream;
          node.contents = {};
        } else if (FS.isFile(node.mode)) {
          node.node_ops = MEMFS.ops_table.file.node;
          node.stream_ops = MEMFS.ops_table.file.stream;
          node.usedBytes = 0; // The actual number of bytes used in the typed array, as opposed to contents.length which gives the whole capacity.
          // When the byte data of the file is populated, this will point to either a typed array, or a normal JS array. Typed arrays are preferred
          // for performance, and used by default. However, typed arrays are not resizable like normal JS arrays are, so there is a small disk size
          // penalty involved for appending file writes that continuously grow a file similar to std::vector capacity vs used -scheme.
          node.contents = null; 
        } else if (FS.isLink(node.mode)) {
          node.node_ops = MEMFS.ops_table.link.node;
          node.stream_ops = MEMFS.ops_table.link.stream;
        } else if (FS.isChrdev(node.mode)) {
          node.node_ops = MEMFS.ops_table.chrdev.node;
          node.stream_ops = MEMFS.ops_table.chrdev.stream;
        }
        node.atime = node.mtime = node.ctime = Date.now();
        // add the new node to the parent
        if (parent) {
          parent.contents[name] = node;
          parent.atime = parent.mtime = parent.ctime = node.atime;
        }
        return node;
      },
  getFileDataAsTypedArray(node) {
        if (!node.contents) return new Uint8Array(0);
        if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes); // Make sure to not return excess unused bytes.
        return new Uint8Array(node.contents);
      },
  expandFileStorage(node, newCapacity) {
        var prevCapacity = node.contents ? node.contents.length : 0;
        if (prevCapacity >= newCapacity) return; // No need to expand, the storage was already large enough.
        // Don't expand strictly to the given requested limit if it's only a very small increase, but instead geometrically grow capacity.
        // For small filesizes (<1MB), perform size*2 geometric increase, but for large sizes, do a much more conservative size*1.125 increase to
        // avoid overshooting the allocation cap by a very large margin.
        var CAPACITY_DOUBLING_MAX = 1024 * 1024;
        newCapacity = Math.max(newCapacity, (prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>> 0);
        if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256); // At minimum allocate 256b for each file when expanding.
        var oldContents = node.contents;
        node.contents = new Uint8Array(newCapacity); // Allocate new storage.
        if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0); // Copy old data over to the new storage.
      },
  resizeFileStorage(node, newSize) {
        if (node.usedBytes == newSize) return;
        if (newSize == 0) {
          node.contents = null; // Fully decommit when requesting a resize to zero.
          node.usedBytes = 0;
        } else {
          var oldContents = node.contents;
          node.contents = new Uint8Array(newSize); // Allocate new storage.
          if (oldContents) {
            node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes))); // Copy old data over to the new storage.
          }
          node.usedBytes = newSize;
        }
      },
  node_ops:{
  getattr(node) {
          var attr = {};
          // device numbers reuse inode numbers.
          attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
          attr.ino = node.id;
          attr.mode = node.mode;
          attr.nlink = 1;
          attr.uid = 0;
          attr.gid = 0;
          attr.rdev = node.rdev;
          if (FS.isDir(node.mode)) {
            attr.size = 4096;
          } else if (FS.isFile(node.mode)) {
            attr.size = node.usedBytes;
          } else if (FS.isLink(node.mode)) {
            attr.size = node.link.length;
          } else {
            attr.size = 0;
          }
          attr.atime = new Date(node.atime);
          attr.mtime = new Date(node.mtime);
          attr.ctime = new Date(node.ctime);
          // NOTE: In our implementation, st_blocks = Math.ceil(st_size/st_blksize),
          //       but this is not required by the standard.
          attr.blksize = 4096;
          attr.blocks = Math.ceil(attr.size / attr.blksize);
          return attr;
        },
  setattr(node, attr) {
          for (const key of ["mode", "atime", "mtime", "ctime"]) {
            if (attr[key] != null) {
              node[key] = attr[key];
            }
          }
          if (attr.size !== undefined) {
            MEMFS.resizeFileStorage(node, attr.size);
          }
        },
  lookup(parent, name) {
          throw new FS.ErrnoError(44);
        },
  mknod(parent, name, mode, dev) {
          return MEMFS.createNode(parent, name, mode, dev);
        },
  rename(old_node, new_dir, new_name) {
          var new_node;
          try {
            new_node = FS.lookupNode(new_dir, new_name);
          } catch (e) {}
          if (new_node) {
            if (FS.isDir(old_node.mode)) {
              // if we're overwriting a directory at new_name, make sure it's empty.
              for (var i in new_node.contents) {
                throw new FS.ErrnoError(55);
              }
            }
            FS.hashRemoveNode(new_node);
          }
          // do the internal rewiring
          delete old_node.parent.contents[old_node.name];
          new_dir.contents[new_name] = old_node;
          old_node.name = new_name;
          new_dir.ctime = new_dir.mtime = old_node.parent.ctime = old_node.parent.mtime = Date.now();
        },
  unlink(parent, name) {
          delete parent.contents[name];
          parent.ctime = parent.mtime = Date.now();
        },
  rmdir(parent, name) {
          var node = FS.lookupNode(parent, name);
          for (var i in node.contents) {
            throw new FS.ErrnoError(55);
          }
          delete parent.contents[name];
          parent.ctime = parent.mtime = Date.now();
        },
  readdir(node) {
          return ['.', '..', ...Object.keys(node.contents)];
        },
  symlink(parent, newname, oldpath) {
          var node = MEMFS.createNode(parent, newname, 0o777 | 40960, 0);
          node.link = oldpath;
          return node;
        },
  readlink(node) {
          if (!FS.isLink(node.mode)) {
            throw new FS.ErrnoError(28);
          }
          return node.link;
        },
  },
  stream_ops:{
  read(stream, buffer, offset, length, position) {
          var contents = stream.node.contents;
          if (position >= stream.node.usedBytes) return 0;
          var size = Math.min(stream.node.usedBytes - position, length);
          assert(size >= 0);
          if (size > 8 && contents.subarray) { // non-trivial, and typed array
            buffer.set(contents.subarray(position, position + size), offset);
          } else {
            for (var i = 0; i < size; i++) buffer[offset + i] = contents[position + i];
          }
          return size;
        },
  write(stream, buffer, offset, length, position, canOwn) {
          // The data buffer should be a typed array view
          assert(!(buffer instanceof ArrayBuffer));
  
          if (!length) return 0;
          var node = stream.node;
          node.mtime = node.ctime = Date.now();
  
          if (buffer.subarray && (!node.contents || node.contents.subarray)) { // This write is from a typed array to a typed array?
            if (canOwn) {
              assert(position === 0, 'canOwn must imply no weird position inside the file');
              node.contents = buffer.subarray(offset, offset + length);
              node.usedBytes = length;
              return length;
            } else if (node.usedBytes === 0 && position === 0) { // If this is a simple first write to an empty file, do a fast set since we don't need to care about old data.
              node.contents = buffer.slice(offset, offset + length);
              node.usedBytes = length;
              return length;
            } else if (position + length <= node.usedBytes) { // Writing to an already allocated and used subrange of the file?
              node.contents.set(buffer.subarray(offset, offset + length), position);
              return length;
            }
          }
  
          // Appending to an existing file and we need to reallocate, or source data did not come as a typed array.
          MEMFS.expandFileStorage(node, position+length);
          if (node.contents.subarray && buffer.subarray) {
            // Use typed array write which is available.
            node.contents.set(buffer.subarray(offset, offset + length), position);
          } else {
            for (var i = 0; i < length; i++) {
             node.contents[position + i] = buffer[offset + i]; // Or fall back to manual write if not.
            }
          }
          node.usedBytes = Math.max(node.usedBytes, position + length);
          return length;
        },
  llseek(stream, offset, whence) {
          var position = offset;
          if (whence === 1) {
            position += stream.position;
          } else if (whence === 2) {
            if (FS.isFile(stream.node.mode)) {
              position += stream.node.usedBytes;
            }
          }
          if (position < 0) {
            throw new FS.ErrnoError(28);
          }
          return position;
        },
  allocate(stream, offset, length) {
          MEMFS.expandFileStorage(stream.node, offset + length);
          stream.node.usedBytes = Math.max(stream.node.usedBytes, offset + length);
        },
  mmap(stream, length, position, prot, flags) {
          if (!FS.isFile(stream.node.mode)) {
            throw new FS.ErrnoError(43);
          }
          var ptr;
          var allocated;
          var contents = stream.node.contents;
          // Only make a new copy when MAP_PRIVATE is specified.
          if (!(flags & 2) && contents && contents.buffer === HEAP8.buffer) {
            // We can't emulate MAP_SHARED when the file is not backed by the
            // buffer we're mapping to (e.g. the HEAP buffer).
            allocated = false;
            ptr = contents.byteOffset;
          } else {
            allocated = true;
            ptr = mmapAlloc(length);
            if (!ptr) {
              throw new FS.ErrnoError(48);
            }
            if (contents) {
              // Try to avoid unnecessary slices.
              if (position > 0 || position + length < contents.length) {
                if (contents.subarray) {
                  contents = contents.subarray(position, position + length);
                } else {
                  contents = Array.prototype.slice.call(contents, position, position + length);
                }
              }
              HEAP8.set(contents, ptr);
            }
          }
          return { ptr, allocated };
        },
  msync(stream, buffer, offset, length, mmapFlags) {
          MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
          // should we check if bytesWritten and length are the same?
          return 0;
        },
  },
  };
  
  var asyncLoad = async (url) => {
      var arrayBuffer = await readAsync(url);
      assert(arrayBuffer, `Loading data file "${url}" failed (no arrayBuffer).`);
      return new Uint8Array(arrayBuffer);
    };
  
  
  var FS_createDataFile = (parent, name, fileData, canRead, canWrite, canOwn) => {
      FS.createDataFile(parent, name, fileData, canRead, canWrite, canOwn);
    };
  
  var preloadPlugins = Module['preloadPlugins'] || [];
  var FS_handledByPreloadPlugin = (byteArray, fullname, finish, onerror) => {
      // Ensure plugins are ready.
      if (typeof Browser != 'undefined') Browser.init();
  
      var handled = false;
      preloadPlugins.forEach((plugin) => {
        if (handled) return;
        if (plugin['canHandle'](fullname)) {
          plugin['handle'](byteArray, fullname, finish, onerror);
          handled = true;
        }
      });
      return handled;
    };
  var FS_createPreloadedFile = (parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) => {
      // TODO we should allow people to just pass in a complete filename instead
      // of parent and name being that we just join them anyways
      var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
      var dep = getUniqueRunDependency(`cp ${fullname}`); // might have several active requests for the same fullname
      function processData(byteArray) {
        function finish(byteArray) {
          preFinish?.();
          if (!dontCreateFile) {
            FS_createDataFile(parent, name, byteArray, canRead, canWrite, canOwn);
          }
          onload?.();
          removeRunDependency(dep);
        }
        if (FS_handledByPreloadPlugin(byteArray, fullname, finish, () => {
          onerror?.();
          removeRunDependency(dep);
        })) {
          return;
        }
        finish(byteArray);
      }
      addRunDependency(dep);
      if (typeof url == 'string') {
        asyncLoad(url).then(processData, onerror);
      } else {
        processData(url);
      }
    };
  
  var FS_modeStringToFlags = (str) => {
      var flagModes = {
        'r': 0,
        'r+': 2,
        'w': 512 | 64 | 1,
        'w+': 512 | 64 | 2,
        'a': 1024 | 64 | 1,
        'a+': 1024 | 64 | 2,
      };
      var flags = flagModes[str];
      if (typeof flags == 'undefined') {
        throw new Error(`Unknown file open mode: ${str}`);
      }
      return flags;
    };
  
  var FS_getMode = (canRead, canWrite) => {
      var mode = 0;
      if (canRead) mode |= 292 | 73;
      if (canWrite) mode |= 146;
      return mode;
    };
  
  
  
  
  
  
  var strError = (errno) => UTF8ToString(_strerror(errno));
  
  var ERRNO_CODES = {
      'EPERM': 63,
      'ENOENT': 44,
      'ESRCH': 71,
      'EINTR': 27,
      'EIO': 29,
      'ENXIO': 60,
      'E2BIG': 1,
      'ENOEXEC': 45,
      'EBADF': 8,
      'ECHILD': 12,
      'EAGAIN': 6,
      'EWOULDBLOCK': 6,
      'ENOMEM': 48,
      'EACCES': 2,
      'EFAULT': 21,
      'ENOTBLK': 105,
      'EBUSY': 10,
      'EEXIST': 20,
      'EXDEV': 75,
      'ENODEV': 43,
      'ENOTDIR': 54,
      'EISDIR': 31,
      'EINVAL': 28,
      'ENFILE': 41,
      'EMFILE': 33,
      'ENOTTY': 59,
      'ETXTBSY': 74,
      'EFBIG': 22,
      'ENOSPC': 51,
      'ESPIPE': 70,
      'EROFS': 69,
      'EMLINK': 34,
      'EPIPE': 64,
      'EDOM': 18,
      'ERANGE': 68,
      'ENOMSG': 49,
      'EIDRM': 24,
      'ECHRNG': 106,
      'EL2NSYNC': 156,
      'EL3HLT': 107,
      'EL3RST': 108,
      'ELNRNG': 109,
      'EUNATCH': 110,
      'ENOCSI': 111,
      'EL2HLT': 112,
      'EDEADLK': 16,
      'ENOLCK': 46,
      'EBADE': 113,
      'EBADR': 114,
      'EXFULL': 115,
      'ENOANO': 104,
      'EBADRQC': 103,
      'EBADSLT': 102,
      'EDEADLOCK': 16,
      'EBFONT': 101,
      'ENOSTR': 100,
      'ENODATA': 116,
      'ETIME': 117,
      'ENOSR': 118,
      'ENONET': 119,
      'ENOPKG': 120,
      'EREMOTE': 121,
      'ENOLINK': 47,
      'EADV': 122,
      'ESRMNT': 123,
      'ECOMM': 124,
      'EPROTO': 65,
      'EMULTIHOP': 36,
      'EDOTDOT': 125,
      'EBADMSG': 9,
      'ENOTUNIQ': 126,
      'EBADFD': 127,
      'EREMCHG': 128,
      'ELIBACC': 129,
      'ELIBBAD': 130,
      'ELIBSCN': 131,
      'ELIBMAX': 132,
      'ELIBEXEC': 133,
      'ENOSYS': 52,
      'ENOTEMPTY': 55,
      'ENAMETOOLONG': 37,
      'ELOOP': 32,
      'EOPNOTSUPP': 138,
      'EPFNOSUPPORT': 139,
      'ECONNRESET': 15,
      'ENOBUFS': 42,
      'EAFNOSUPPORT': 5,
      'EPROTOTYPE': 67,
      'ENOTSOCK': 57,
      'ENOPROTOOPT': 50,
      'ESHUTDOWN': 140,
      'ECONNREFUSED': 14,
      'EADDRINUSE': 3,
      'ECONNABORTED': 13,
      'ENETUNREACH': 40,
      'ENETDOWN': 38,
      'ETIMEDOUT': 73,
      'EHOSTDOWN': 142,
      'EHOSTUNREACH': 23,
      'EINPROGRESS': 26,
      'EALREADY': 7,
      'EDESTADDRREQ': 17,
      'EMSGSIZE': 35,
      'EPROTONOSUPPORT': 66,
      'ESOCKTNOSUPPORT': 137,
      'EADDRNOTAVAIL': 4,
      'ENETRESET': 39,
      'EISCONN': 30,
      'ENOTCONN': 53,
      'ETOOMANYREFS': 141,
      'EUSERS': 136,
      'EDQUOT': 19,
      'ESTALE': 72,
      'ENOTSUP': 138,
      'ENOMEDIUM': 148,
      'EILSEQ': 25,
      'EOVERFLOW': 61,
      'ECANCELED': 11,
      'ENOTRECOVERABLE': 56,
      'EOWNERDEAD': 62,
      'ESTRPIPE': 135,
    };
  var FS = {
  root:null,
  mounts:[],
  devices:{
  },
  streams:[],
  nextInode:1,
  nameTable:null,
  currentPath:"/",
  initialized:false,
  ignorePermissions:true,
  ErrnoError:class extends Error {
        name = 'ErrnoError';
        // We set the `name` property to be able to identify `FS.ErrnoError`
        // - the `name` is a standard ECMA-262 property of error objects. Kind of good to have it anyway.
        // - when using PROXYFS, an error can come from an underlying FS
        // as different FS objects have their own FS.ErrnoError each,
        // the test `err instanceof FS.ErrnoError` won't detect an error coming from another filesystem, causing bugs.
        // we'll use the reliable test `err.name == "ErrnoError"` instead
        constructor(errno) {
          super(runtimeInitialized ? strError(errno) : '');
          this.errno = errno;
          for (var key in ERRNO_CODES) {
            if (ERRNO_CODES[key] === errno) {
              this.code = key;
              break;
            }
          }
        }
      },
  filesystems:null,
  syncFSRequests:0,
  readFiles:{
  },
  FSStream:class {
        shared = {};
        get object() {
          return this.node;
        }
        set object(val) {
          this.node = val;
        }
        get isRead() {
          return (this.flags & 2097155) !== 1;
        }
        get isWrite() {
          return (this.flags & 2097155) !== 0;
        }
        get isAppend() {
          return (this.flags & 1024);
        }
        get flags() {
          return this.shared.flags;
        }
        set flags(val) {
          this.shared.flags = val;
        }
        get position() {
          return this.shared.position;
        }
        set position(val) {
          this.shared.position = val;
        }
      },
  FSNode:class {
        node_ops = {};
        stream_ops = {};
        readMode = 292 | 73;
        writeMode = 146;
        mounted = null;
        constructor(parent, name, mode, rdev) {
          if (!parent) {
            parent = this;  // root node sets parent to itself
          }
          this.parent = parent;
          this.mount = parent.mount;
          this.id = FS.nextInode++;
          this.name = name;
          this.mode = mode;
          this.rdev = rdev;
          this.atime = this.mtime = this.ctime = Date.now();
        }
        get read() {
          return (this.mode & this.readMode) === this.readMode;
        }
        set read(val) {
          val ? this.mode |= this.readMode : this.mode &= ~this.readMode;
        }
        get write() {
          return (this.mode & this.writeMode) === this.writeMode;
        }
        set write(val) {
          val ? this.mode |= this.writeMode : this.mode &= ~this.writeMode;
        }
        get isFolder() {
          return FS.isDir(this.mode);
        }
        get isDevice() {
          return FS.isChrdev(this.mode);
        }
      },
  lookupPath(path, opts = {}) {
        if (!path) {
          throw new FS.ErrnoError(44);
        }
        opts.follow_mount ??= true
  
        if (!PATH.isAbs(path)) {
          path = FS.cwd() + '/' + path;
        }
  
        // limit max consecutive symlinks to 40 (SYMLOOP_MAX).
        linkloop: for (var nlinks = 0; nlinks < 40; nlinks++) {
          // split the absolute path
          var parts = path.split('/').filter((p) => !!p);
  
          // start at the root
          var current = FS.root;
          var current_path = '/';
  
          for (var i = 0; i < parts.length; i++) {
            var islast = (i === parts.length-1);
            if (islast && opts.parent) {
              // stop resolving
              break;
            }
  
            if (parts[i] === '.') {
              continue;
            }
  
            if (parts[i] === '..') {
              current_path = PATH.dirname(current_path);
              current = current.parent;
              continue;
            }
  
            current_path = PATH.join2(current_path, parts[i]);
            try {
              current = FS.lookupNode(current, parts[i]);
            } catch (e) {
              // if noent_okay is true, suppress a ENOENT in the last component
              // and return an object with an undefined node. This is needed for
              // resolving symlinks in the path when creating a file.
              if ((e?.errno === 44) && islast && opts.noent_okay) {
                return { path: current_path };
              }
              throw e;
            }
  
            // jump to the mount's root node if this is a mountpoint
            if (FS.isMountpoint(current) && (!islast || opts.follow_mount)) {
              current = current.mounted.root;
            }
  
            // by default, lookupPath will not follow a symlink if it is the final path component.
            // setting opts.follow = true will override this behavior.
            if (FS.isLink(current.mode) && (!islast || opts.follow)) {
              if (!current.node_ops.readlink) {
                throw new FS.ErrnoError(52);
              }
              var link = current.node_ops.readlink(current);
              if (!PATH.isAbs(link)) {
                link = PATH.dirname(current_path) + '/' + link;
              }
              path = link + '/' + parts.slice(i + 1).join('/');
              continue linkloop;
            }
          }
          return { path: current_path, node: current };
        }
        throw new FS.ErrnoError(32);
      },
  getPath(node) {
        var path;
        while (true) {
          if (FS.isRoot(node)) {
            var mount = node.mount.mountpoint;
            if (!path) return mount;
            return mount[mount.length-1] !== '/' ? `${mount}/${path}` : mount + path;
          }
          path = path ? `${node.name}/${path}` : node.name;
          node = node.parent;
        }
      },
  hashName(parentid, name) {
        var hash = 0;
  
        for (var i = 0; i < name.length; i++) {
          hash = ((hash << 5) - hash + name.charCodeAt(i)) | 0;
        }
        return ((parentid + hash) >>> 0) % FS.nameTable.length;
      },
  hashAddNode(node) {
        var hash = FS.hashName(node.parent.id, node.name);
        node.name_next = FS.nameTable[hash];
        FS.nameTable[hash] = node;
      },
  hashRemoveNode(node) {
        var hash = FS.hashName(node.parent.id, node.name);
        if (FS.nameTable[hash] === node) {
          FS.nameTable[hash] = node.name_next;
        } else {
          var current = FS.nameTable[hash];
          while (current) {
            if (current.name_next === node) {
              current.name_next = node.name_next;
              break;
            }
            current = current.name_next;
          }
        }
      },
  lookupNode(parent, name) {
        var errCode = FS.mayLookup(parent);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        var hash = FS.hashName(parent.id, name);
        for (var node = FS.nameTable[hash]; node; node = node.name_next) {
          var nodeName = node.name;
          if (node.parent.id === parent.id && nodeName === name) {
            return node;
          }
        }
        // if we failed to find it in the cache, call into the VFS
        return FS.lookup(parent, name);
      },
  createNode(parent, name, mode, rdev) {
        assert(typeof parent == 'object')
        var node = new FS.FSNode(parent, name, mode, rdev);
  
        FS.hashAddNode(node);
  
        return node;
      },
  destroyNode(node) {
        FS.hashRemoveNode(node);
      },
  isRoot(node) {
        return node === node.parent;
      },
  isMountpoint(node) {
        return !!node.mounted;
      },
  isFile(mode) {
        return (mode & 61440) === 32768;
      },
  isDir(mode) {
        return (mode & 61440) === 16384;
      },
  isLink(mode) {
        return (mode & 61440) === 40960;
      },
  isChrdev(mode) {
        return (mode & 61440) === 8192;
      },
  isBlkdev(mode) {
        return (mode & 61440) === 24576;
      },
  isFIFO(mode) {
        return (mode & 61440) === 4096;
      },
  isSocket(mode) {
        return (mode & 49152) === 49152;
      },
  flagsToPermissionString(flag) {
        var perms = ['r', 'w', 'rw'][flag & 3];
        if ((flag & 512)) {
          perms += 'w';
        }
        return perms;
      },
  nodePermissions(node, perms) {
        if (FS.ignorePermissions) {
          return 0;
        }
        // return 0 if any user, group or owner bits are set.
        if (perms.includes('r') && !(node.mode & 292)) {
          return 2;
        } else if (perms.includes('w') && !(node.mode & 146)) {
          return 2;
        } else if (perms.includes('x') && !(node.mode & 73)) {
          return 2;
        }
        return 0;
      },
  mayLookup(dir) {
        if (!FS.isDir(dir.mode)) return 54;
        var errCode = FS.nodePermissions(dir, 'x');
        if (errCode) return errCode;
        if (!dir.node_ops.lookup) return 2;
        return 0;
      },
  mayCreate(dir, name) {
        if (!FS.isDir(dir.mode)) {
          return 54;
        }
        try {
          var node = FS.lookupNode(dir, name);
          return 20;
        } catch (e) {
        }
        return FS.nodePermissions(dir, 'wx');
      },
  mayDelete(dir, name, isdir) {
        var node;
        try {
          node = FS.lookupNode(dir, name);
        } catch (e) {
          return e.errno;
        }
        var errCode = FS.nodePermissions(dir, 'wx');
        if (errCode) {
          return errCode;
        }
        if (isdir) {
          if (!FS.isDir(node.mode)) {
            return 54;
          }
          if (FS.isRoot(node) || FS.getPath(node) === FS.cwd()) {
            return 10;
          }
        } else {
          if (FS.isDir(node.mode)) {
            return 31;
          }
        }
        return 0;
      },
  mayOpen(node, flags) {
        if (!node) {
          return 44;
        }
        if (FS.isLink(node.mode)) {
          return 32;
        } else if (FS.isDir(node.mode)) {
          if (FS.flagsToPermissionString(flags) !== 'r' // opening for write
              || (flags & (512 | 64))) { // TODO: check for O_SEARCH? (== search for dir only)
            return 31;
          }
        }
        return FS.nodePermissions(node, FS.flagsToPermissionString(flags));
      },
  checkOpExists(op, err) {
        if (!op) {
          throw new FS.ErrnoError(err);
        }
        return op;
      },
  MAX_OPEN_FDS:4096,
  nextfd() {
        for (var fd = 0; fd <= FS.MAX_OPEN_FDS; fd++) {
          if (!FS.streams[fd]) {
            return fd;
          }
        }
        throw new FS.ErrnoError(33);
      },
  getStreamChecked(fd) {
        var stream = FS.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        return stream;
      },
  getStream:(fd) => FS.streams[fd],
  createStream(stream, fd = -1) {
        assert(fd >= -1);
  
        // clone it, so we can return an instance of FSStream
        stream = Object.assign(new FS.FSStream(), stream);
        if (fd == -1) {
          fd = FS.nextfd();
        }
        stream.fd = fd;
        FS.streams[fd] = stream;
        return stream;
      },
  closeStream(fd) {
        FS.streams[fd] = null;
      },
  dupStream(origStream, fd = -1) {
        var stream = FS.createStream(origStream, fd);
        stream.stream_ops?.dup?.(stream);
        return stream;
      },
  doSetAttr(stream, node, attr) {
        var setattr = stream?.stream_ops.setattr;
        var arg = setattr ? stream : node;
        setattr ??= node.node_ops.setattr;
        FS.checkOpExists(setattr, 63)
        setattr(arg, attr);
      },
  chrdev_stream_ops:{
  open(stream) {
          var device = FS.getDevice(stream.node.rdev);
          // override node's stream ops with the device's
          stream.stream_ops = device.stream_ops;
          // forward the open call
          stream.stream_ops.open?.(stream);
        },
  llseek() {
          throw new FS.ErrnoError(70);
        },
  },
  major:(dev) => ((dev) >> 8),
  minor:(dev) => ((dev) & 0xff),
  makedev:(ma, mi) => ((ma) << 8 | (mi)),
  registerDevice(dev, ops) {
        FS.devices[dev] = { stream_ops: ops };
      },
  getDevice:(dev) => FS.devices[dev],
  getMounts(mount) {
        var mounts = [];
        var check = [mount];
  
        while (check.length) {
          var m = check.pop();
  
          mounts.push(m);
  
          check.push(...m.mounts);
        }
  
        return mounts;
      },
  syncfs(populate, callback) {
        if (typeof populate == 'function') {
          callback = populate;
          populate = false;
        }
  
        FS.syncFSRequests++;
  
        if (FS.syncFSRequests > 1) {
          err(`warning: ${FS.syncFSRequests} FS.syncfs operations in flight at once, probably just doing extra work`);
        }
  
        var mounts = FS.getMounts(FS.root.mount);
        var completed = 0;
  
        function doCallback(errCode) {
          assert(FS.syncFSRequests > 0);
          FS.syncFSRequests--;
          return callback(errCode);
        }
  
        function done(errCode) {
          if (errCode) {
            if (!done.errored) {
              done.errored = true;
              return doCallback(errCode);
            }
            return;
          }
          if (++completed >= mounts.length) {
            doCallback(null);
          }
        };
  
        // sync all mounts
        mounts.forEach((mount) => {
          if (!mount.type.syncfs) {
            return done(null);
          }
          mount.type.syncfs(mount, populate, done);
        });
      },
  mount(type, opts, mountpoint) {
        if (typeof type == 'string') {
          // The filesystem was not included, and instead we have an error
          // message stored in the variable.
          throw type;
        }
        var root = mountpoint === '/';
        var pseudo = !mountpoint;
        var node;
  
        if (root && FS.root) {
          throw new FS.ErrnoError(10);
        } else if (!root && !pseudo) {
          var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
  
          mountpoint = lookup.path;  // use the absolute path
          node = lookup.node;
  
          if (FS.isMountpoint(node)) {
            throw new FS.ErrnoError(10);
          }
  
          if (!FS.isDir(node.mode)) {
            throw new FS.ErrnoError(54);
          }
        }
  
        var mount = {
          type,
          opts,
          mountpoint,
          mounts: []
        };
  
        // create a root node for the fs
        var mountRoot = type.mount(mount);
        mountRoot.mount = mount;
        mount.root = mountRoot;
  
        if (root) {
          FS.root = mountRoot;
        } else if (node) {
          // set as a mountpoint
          node.mounted = mount;
  
          // add the new mount to the current mount's children
          if (node.mount) {
            node.mount.mounts.push(mount);
          }
        }
  
        return mountRoot;
      },
  unmount(mountpoint) {
        var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
  
        if (!FS.isMountpoint(lookup.node)) {
          throw new FS.ErrnoError(28);
        }
  
        // destroy the nodes for this mount, and all its child mounts
        var node = lookup.node;
        var mount = node.mounted;
        var mounts = FS.getMounts(mount);
  
        Object.keys(FS.nameTable).forEach((hash) => {
          var current = FS.nameTable[hash];
  
          while (current) {
            var next = current.name_next;
  
            if (mounts.includes(current.mount)) {
              FS.destroyNode(current);
            }
  
            current = next;
          }
        });
  
        // no longer a mountpoint
        node.mounted = null;
  
        // remove this mount from the child mounts
        var idx = node.mount.mounts.indexOf(mount);
        assert(idx !== -1);
        node.mount.mounts.splice(idx, 1);
      },
  lookup(parent, name) {
        return parent.node_ops.lookup(parent, name);
      },
  mknod(path, mode, dev) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        var name = PATH.basename(path);
        if (!name) {
          throw new FS.ErrnoError(28);
        }
        if (name === '.' || name === '..') {
          throw new FS.ErrnoError(20);
        }
        var errCode = FS.mayCreate(parent, name);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.mknod) {
          throw new FS.ErrnoError(63);
        }
        return parent.node_ops.mknod(parent, name, mode, dev);
      },
  statfs(path) {
        return FS.statfsNode(FS.lookupPath(path, {follow: true}).node);
      },
  statfsStream(stream) {
        // We keep a separate statfsStream function because noderawfs overrides
        // it. In noderawfs, stream.node is sometimes null. Instead, we need to
        // look at stream.path.
        return FS.statfsNode(stream.node);
      },
  statfsNode(node) {
        // NOTE: None of the defaults here are true. We're just returning safe and
        //       sane values. Currently nodefs and rawfs replace these defaults,
        //       other file systems leave them alone.
        var rtn = {
          bsize: 4096,
          frsize: 4096,
          blocks: 1e6,
          bfree: 5e5,
          bavail: 5e5,
          files: FS.nextInode,
          ffree: FS.nextInode - 1,
          fsid: 42,
          flags: 2,
          namelen: 255,
        };
  
        if (node.node_ops.statfs) {
          Object.assign(rtn, node.node_ops.statfs(node.mount.opts.root));
        }
        return rtn;
      },
  create(path, mode = 0o666) {
        mode &= 4095;
        mode |= 32768;
        return FS.mknod(path, mode, 0);
      },
  mkdir(path, mode = 0o777) {
        mode &= 511 | 512;
        mode |= 16384;
        return FS.mknod(path, mode, 0);
      },
  mkdirTree(path, mode) {
        var dirs = path.split('/');
        var d = '';
        for (var i = 0; i < dirs.length; ++i) {
          if (!dirs[i]) continue;
          d += '/' + dirs[i];
          try {
            FS.mkdir(d, mode);
          } catch(e) {
            if (e.errno != 20) throw e;
          }
        }
      },
  mkdev(path, mode, dev) {
        if (typeof dev == 'undefined') {
          dev = mode;
          mode = 0o666;
        }
        mode |= 8192;
        return FS.mknod(path, mode, dev);
      },
  symlink(oldpath, newpath) {
        if (!PATH_FS.resolve(oldpath)) {
          throw new FS.ErrnoError(44);
        }
        var lookup = FS.lookupPath(newpath, { parent: true });
        var parent = lookup.node;
        if (!parent) {
          throw new FS.ErrnoError(44);
        }
        var newname = PATH.basename(newpath);
        var errCode = FS.mayCreate(parent, newname);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.symlink) {
          throw new FS.ErrnoError(63);
        }
        return parent.node_ops.symlink(parent, newname, oldpath);
      },
  rename(old_path, new_path) {
        var old_dirname = PATH.dirname(old_path);
        var new_dirname = PATH.dirname(new_path);
        var old_name = PATH.basename(old_path);
        var new_name = PATH.basename(new_path);
        // parents must exist
        var lookup, old_dir, new_dir;
  
        // let the errors from non existent directories percolate up
        lookup = FS.lookupPath(old_path, { parent: true });
        old_dir = lookup.node;
        lookup = FS.lookupPath(new_path, { parent: true });
        new_dir = lookup.node;
  
        if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
        // need to be part of the same mount
        if (old_dir.mount !== new_dir.mount) {
          throw new FS.ErrnoError(75);
        }
        // source must exist
        var old_node = FS.lookupNode(old_dir, old_name);
        // old path should not be an ancestor of the new path
        var relative = PATH_FS.relative(old_path, new_dirname);
        if (relative.charAt(0) !== '.') {
          throw new FS.ErrnoError(28);
        }
        // new path should not be an ancestor of the old path
        relative = PATH_FS.relative(new_path, old_dirname);
        if (relative.charAt(0) !== '.') {
          throw new FS.ErrnoError(55);
        }
        // see if the new path already exists
        var new_node;
        try {
          new_node = FS.lookupNode(new_dir, new_name);
        } catch (e) {
          // not fatal
        }
        // early out if nothing needs to change
        if (old_node === new_node) {
          return;
        }
        // we'll need to delete the old entry
        var isdir = FS.isDir(old_node.mode);
        var errCode = FS.mayDelete(old_dir, old_name, isdir);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        // need delete permissions if we'll be overwriting.
        // need create permissions if new doesn't already exist.
        errCode = new_node ?
          FS.mayDelete(new_dir, new_name, isdir) :
          FS.mayCreate(new_dir, new_name);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!old_dir.node_ops.rename) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(old_node) || (new_node && FS.isMountpoint(new_node))) {
          throw new FS.ErrnoError(10);
        }
        // if we are going to change the parent, check write permissions
        if (new_dir !== old_dir) {
          errCode = FS.nodePermissions(old_dir, 'w');
          if (errCode) {
            throw new FS.ErrnoError(errCode);
          }
        }
        // remove the node from the lookup hash
        FS.hashRemoveNode(old_node);
        // do the underlying fs rename
        try {
          old_dir.node_ops.rename(old_node, new_dir, new_name);
          // update old node (we do this here to avoid each backend
          // needing to)
          old_node.parent = new_dir;
        } catch (e) {
          throw e;
        } finally {
          // add the node back to the hash (in case node_ops.rename
          // changed its name)
          FS.hashAddNode(old_node);
        }
      },
  rmdir(path) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        var name = PATH.basename(path);
        var node = FS.lookupNode(parent, name);
        var errCode = FS.mayDelete(parent, name, true);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.rmdir) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(node)) {
          throw new FS.ErrnoError(10);
        }
        parent.node_ops.rmdir(parent, name);
        FS.destroyNode(node);
      },
  readdir(path) {
        var lookup = FS.lookupPath(path, { follow: true });
        var node = lookup.node;
        var readdir = FS.checkOpExists(node.node_ops.readdir, 54);
        return readdir(node);
      },
  unlink(path) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        if (!parent) {
          throw new FS.ErrnoError(44);
        }
        var name = PATH.basename(path);
        var node = FS.lookupNode(parent, name);
        var errCode = FS.mayDelete(parent, name, false);
        if (errCode) {
          // According to POSIX, we should map EISDIR to EPERM, but
          // we instead do what Linux does (and we must, as we use
          // the musl linux libc).
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.unlink) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(node)) {
          throw new FS.ErrnoError(10);
        }
        parent.node_ops.unlink(parent, name);
        FS.destroyNode(node);
      },
  readlink(path) {
        var lookup = FS.lookupPath(path);
        var link = lookup.node;
        if (!link) {
          throw new FS.ErrnoError(44);
        }
        if (!link.node_ops.readlink) {
          throw new FS.ErrnoError(28);
        }
        return link.node_ops.readlink(link);
      },
  stat(path, dontFollow) {
        var lookup = FS.lookupPath(path, { follow: !dontFollow });
        var node = lookup.node;
        var getattr = FS.checkOpExists(node.node_ops.getattr, 63);
        return getattr(node);
      },
  fstat(fd) {
        var stream = FS.getStreamChecked(fd);
        var node = stream.node;
        var getattr = stream.stream_ops.getattr;
        var arg = getattr ? stream : node;
        getattr ??= node.node_ops.getattr;
        FS.checkOpExists(getattr, 63)
        return getattr(arg);
      },
  lstat(path) {
        return FS.stat(path, true);
      },
  doChmod(stream, node, mode, dontFollow) {
        FS.doSetAttr(stream, node, {
          mode: (mode & 4095) | (node.mode & ~4095),
          ctime: Date.now(),
          dontFollow
        });
      },
  chmod(path, mode, dontFollow) {
        var node;
        if (typeof path == 'string') {
          var lookup = FS.lookupPath(path, { follow: !dontFollow });
          node = lookup.node;
        } else {
          node = path;
        }
        FS.doChmod(null, node, mode, dontFollow);
      },
  lchmod(path, mode) {
        FS.chmod(path, mode, true);
      },
  fchmod(fd, mode) {
        var stream = FS.getStreamChecked(fd);
        FS.doChmod(stream, stream.node, mode, false);
      },
  doChown(stream, node, dontFollow) {
        FS.doSetAttr(stream, node, {
          timestamp: Date.now(),
          dontFollow
          // we ignore the uid / gid for now
        });
      },
  chown(path, uid, gid, dontFollow) {
        var node;
        if (typeof path == 'string') {
          var lookup = FS.lookupPath(path, { follow: !dontFollow });
          node = lookup.node;
        } else {
          node = path;
        }
        FS.doChown(null, node, dontFollow);
      },
  lchown(path, uid, gid) {
        FS.chown(path, uid, gid, true);
      },
  fchown(fd, uid, gid) {
        var stream = FS.getStreamChecked(fd);
        FS.doChown(stream, stream.node, false);
      },
  doTruncate(stream, node, len) {
        if (FS.isDir(node.mode)) {
          throw new FS.ErrnoError(31);
        }
        if (!FS.isFile(node.mode)) {
          throw new FS.ErrnoError(28);
        }
        var errCode = FS.nodePermissions(node, 'w');
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        FS.doSetAttr(stream, node, {
          size: len,
          timestamp: Date.now()
        });
      },
  truncate(path, len) {
        if (len < 0) {
          throw new FS.ErrnoError(28);
        }
        var node;
        if (typeof path == 'string') {
          var lookup = FS.lookupPath(path, { follow: true });
          node = lookup.node;
        } else {
          node = path;
        }
        FS.doTruncate(null, node, len);
      },
  ftruncate(fd, len) {
        var stream = FS.getStreamChecked(fd);
        if (len < 0 || (stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(28);
        }
        FS.doTruncate(stream, stream.node, len);
      },
  utime(path, atime, mtime) {
        var lookup = FS.lookupPath(path, { follow: true });
        var node = lookup.node;
        var setattr = FS.checkOpExists(node.node_ops.setattr, 63);
        setattr(node, {
          atime: atime,
          mtime: mtime
        });
      },
  open(path, flags, mode = 0o666) {
        if (path === "") {
          throw new FS.ErrnoError(44);
        }
        flags = typeof flags == 'string' ? FS_modeStringToFlags(flags) : flags;
        if ((flags & 64)) {
          mode = (mode & 4095) | 32768;
        } else {
          mode = 0;
        }
        var node;
        var isDirPath;
        if (typeof path == 'object') {
          node = path;
        } else {
          isDirPath = path.endsWith("/");
          // noent_okay makes it so that if the final component of the path
          // doesn't exist, lookupPath returns `node: undefined`. `path` will be
          // updated to point to the target of all symlinks.
          var lookup = FS.lookupPath(path, {
            follow: !(flags & 131072),
            noent_okay: true
          });
          node = lookup.node;
          path = lookup.path;
        }
        // perhaps we need to create the node
        var created = false;
        if ((flags & 64)) {
          if (node) {
            // if O_CREAT and O_EXCL are set, error out if the node already exists
            if ((flags & 128)) {
              throw new FS.ErrnoError(20);
            }
          } else if (isDirPath) {
            throw new FS.ErrnoError(31);
          } else {
            // node doesn't exist, try to create it
            // Ignore the permission bits here to ensure we can `open` this new
            // file below. We use chmod below the apply the permissions once the
            // file is open.
            node = FS.mknod(path, mode | 0o777, 0);
            created = true;
          }
        }
        if (!node) {
          throw new FS.ErrnoError(44);
        }
        // can't truncate a device
        if (FS.isChrdev(node.mode)) {
          flags &= ~512;
        }
        // if asked only for a directory, then this must be one
        if ((flags & 65536) && !FS.isDir(node.mode)) {
          throw new FS.ErrnoError(54);
        }
        // check permissions, if this is not a file we just created now (it is ok to
        // create and write to a file with read-only permissions; it is read-only
        // for later use)
        if (!created) {
          var errCode = FS.mayOpen(node, flags);
          if (errCode) {
            throw new FS.ErrnoError(errCode);
          }
        }
        // do truncation if necessary
        if ((flags & 512) && !created) {
          FS.truncate(node, 0);
        }
        // we've already handled these, don't pass down to the underlying vfs
        flags &= ~(128 | 512 | 131072);
  
        // register the stream with the filesystem
        var stream = FS.createStream({
          node,
          path: FS.getPath(node),  // we want the absolute path to the node
          flags,
          seekable: true,
          position: 0,
          stream_ops: node.stream_ops,
          // used by the file family libc calls (fopen, fwrite, ferror, etc.)
          ungotten: [],
          error: false
        });
        // call the new stream's open function
        if (stream.stream_ops.open) {
          stream.stream_ops.open(stream);
        }
        if (created) {
          FS.chmod(node, mode & 0o777);
        }
        if (Module['logReadFiles'] && !(flags & 1)) {
          if (!(path in FS.readFiles)) {
            FS.readFiles[path] = 1;
          }
        }
        return stream;
      },
  close(stream) {
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if (stream.getdents) stream.getdents = null; // free readdir state
        try {
          if (stream.stream_ops.close) {
            stream.stream_ops.close(stream);
          }
        } catch (e) {
          throw e;
        } finally {
          FS.closeStream(stream.fd);
        }
        stream.fd = null;
      },
  isClosed(stream) {
        return stream.fd === null;
      },
  llseek(stream, offset, whence) {
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if (!stream.seekable || !stream.stream_ops.llseek) {
          throw new FS.ErrnoError(70);
        }
        if (whence != 0 && whence != 1 && whence != 2) {
          throw new FS.ErrnoError(28);
        }
        stream.position = stream.stream_ops.llseek(stream, offset, whence);
        stream.ungotten = [];
        return stream.position;
      },
  read(stream, buffer, offset, length, position) {
        assert(offset >= 0);
        if (length < 0 || position < 0) {
          throw new FS.ErrnoError(28);
        }
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if ((stream.flags & 2097155) === 1) {
          throw new FS.ErrnoError(8);
        }
        if (FS.isDir(stream.node.mode)) {
          throw new FS.ErrnoError(31);
        }
        if (!stream.stream_ops.read) {
          throw new FS.ErrnoError(28);
        }
        var seeking = typeof position != 'undefined';
        if (!seeking) {
          position = stream.position;
        } else if (!stream.seekable) {
          throw new FS.ErrnoError(70);
        }
        var bytesRead = stream.stream_ops.read(stream, buffer, offset, length, position);
        if (!seeking) stream.position += bytesRead;
        return bytesRead;
      },
  write(stream, buffer, offset, length, position, canOwn) {
        assert(offset >= 0);
        if (length < 0 || position < 0) {
          throw new FS.ErrnoError(28);
        }
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(8);
        }
        if (FS.isDir(stream.node.mode)) {
          throw new FS.ErrnoError(31);
        }
        if (!stream.stream_ops.write) {
          throw new FS.ErrnoError(28);
        }
        if (stream.seekable && stream.flags & 1024) {
          // seek to the end before writing in append mode
          FS.llseek(stream, 0, 2);
        }
        var seeking = typeof position != 'undefined';
        if (!seeking) {
          position = stream.position;
        } else if (!stream.seekable) {
          throw new FS.ErrnoError(70);
        }
        var bytesWritten = stream.stream_ops.write(stream, buffer, offset, length, position, canOwn);
        if (!seeking) stream.position += bytesWritten;
        return bytesWritten;
      },
  allocate(stream, offset, length) {
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if (offset < 0 || length <= 0) {
          throw new FS.ErrnoError(28);
        }
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(8);
        }
        if (!FS.isFile(stream.node.mode) && !FS.isDir(stream.node.mode)) {
          throw new FS.ErrnoError(43);
        }
        if (!stream.stream_ops.allocate) {
          throw new FS.ErrnoError(138);
        }
        stream.stream_ops.allocate(stream, offset, length);
      },
  mmap(stream, length, position, prot, flags) {
        // User requests writing to file (prot & PROT_WRITE != 0).
        // Checking if we have permissions to write to the file unless
        // MAP_PRIVATE flag is set. According to POSIX spec it is possible
        // to write to file opened in read-only mode with MAP_PRIVATE flag,
        // as all modifications will be visible only in the memory of
        // the current process.
        if ((prot & 2) !== 0
            && (flags & 2) === 0
            && (stream.flags & 2097155) !== 2) {
          throw new FS.ErrnoError(2);
        }
        if ((stream.flags & 2097155) === 1) {
          throw new FS.ErrnoError(2);
        }
        if (!stream.stream_ops.mmap) {
          throw new FS.ErrnoError(43);
        }
        if (!length) {
          throw new FS.ErrnoError(28);
        }
        return stream.stream_ops.mmap(stream, length, position, prot, flags);
      },
  msync(stream, buffer, offset, length, mmapFlags) {
        assert(offset >= 0);
        if (!stream.stream_ops.msync) {
          return 0;
        }
        return stream.stream_ops.msync(stream, buffer, offset, length, mmapFlags);
      },
  ioctl(stream, cmd, arg) {
        if (!stream.stream_ops.ioctl) {
          throw new FS.ErrnoError(59);
        }
        return stream.stream_ops.ioctl(stream, cmd, arg);
      },
  readFile(path, opts = {}) {
        opts.flags = opts.flags || 0;
        opts.encoding = opts.encoding || 'binary';
        if (opts.encoding !== 'utf8' && opts.encoding !== 'binary') {
          throw new Error(`Invalid encoding type "${opts.encoding}"`);
        }
        var ret;
        var stream = FS.open(path, opts.flags);
        var stat = FS.stat(path);
        var length = stat.size;
        var buf = new Uint8Array(length);
        FS.read(stream, buf, 0, length, 0);
        if (opts.encoding === 'utf8') {
          ret = UTF8ArrayToString(buf);
        } else if (opts.encoding === 'binary') {
          ret = buf;
        }
        FS.close(stream);
        return ret;
      },
  writeFile(path, data, opts = {}) {
        opts.flags = opts.flags || 577;
        var stream = FS.open(path, opts.flags, opts.mode);
        if (typeof data == 'string') {
          var buf = new Uint8Array(lengthBytesUTF8(data)+1);
          var actualNumBytes = stringToUTF8Array(data, buf, 0, buf.length);
          FS.write(stream, buf, 0, actualNumBytes, undefined, opts.canOwn);
        } else if (ArrayBuffer.isView(data)) {
          FS.write(stream, data, 0, data.byteLength, undefined, opts.canOwn);
        } else {
          throw new Error('Unsupported data type');
        }
        FS.close(stream);
      },
  cwd:() => FS.currentPath,
  chdir(path) {
        var lookup = FS.lookupPath(path, { follow: true });
        if (lookup.node === null) {
          throw new FS.ErrnoError(44);
        }
        if (!FS.isDir(lookup.node.mode)) {
          throw new FS.ErrnoError(54);
        }
        var errCode = FS.nodePermissions(lookup.node, 'x');
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        FS.currentPath = lookup.path;
      },
  createDefaultDirectories() {
        FS.mkdir('/tmp');
        FS.mkdir('/home');
        FS.mkdir('/home/web_user');
      },
  createDefaultDevices() {
        // create /dev
        FS.mkdir('/dev');
        // setup /dev/null
        FS.registerDevice(FS.makedev(1, 3), {
          read: () => 0,
          write: (stream, buffer, offset, length, pos) => length,
          llseek: () => 0,
        });
        FS.mkdev('/dev/null', FS.makedev(1, 3));
        // setup /dev/tty and /dev/tty1
        // stderr needs to print output using err() rather than out()
        // so we register a second tty just for it.
        TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
        TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
        FS.mkdev('/dev/tty', FS.makedev(5, 0));
        FS.mkdev('/dev/tty1', FS.makedev(6, 0));
        // setup /dev/[u]random
        // use a buffer to avoid overhead of individual crypto calls per byte
        var randomBuffer = new Uint8Array(1024), randomLeft = 0;
        var randomByte = () => {
          if (randomLeft === 0) {
            randomFill(randomBuffer);
            randomLeft = randomBuffer.byteLength;
          }
          return randomBuffer[--randomLeft];
        };
        FS.createDevice('/dev', 'random', randomByte);
        FS.createDevice('/dev', 'urandom', randomByte);
        // we're not going to emulate the actual shm device,
        // just create the tmp dirs that reside in it commonly
        FS.mkdir('/dev/shm');
        FS.mkdir('/dev/shm/tmp');
      },
  createSpecialDirectories() {
        // create /proc/self/fd which allows /proc/self/fd/6 => readlink gives the
        // name of the stream for fd 6 (see test_unistd_ttyname)
        FS.mkdir('/proc');
        var proc_self = FS.mkdir('/proc/self');
        FS.mkdir('/proc/self/fd');
        FS.mount({
          mount() {
            var node = FS.createNode(proc_self, 'fd', 16895, 73);
            node.stream_ops = {
              llseek: MEMFS.stream_ops.llseek,
            };
            node.node_ops = {
              lookup(parent, name) {
                var fd = +name;
                var stream = FS.getStreamChecked(fd);
                var ret = {
                  parent: null,
                  mount: { mountpoint: 'fake' },
                  node_ops: { readlink: () => stream.path },
                  id: fd + 1,
                };
                ret.parent = ret; // make it look like a simple root node
                return ret;
              },
              readdir() {
                return Array.from(FS.streams.entries())
                  .filter(([k, v]) => v)
                  .map(([k, v]) => k.toString());
              }
            };
            return node;
          }
        }, {}, '/proc/self/fd');
      },
  createStandardStreams(input, output, error) {
        // TODO deprecate the old functionality of a single
        // input / output callback and that utilizes FS.createDevice
        // and instead require a unique set of stream ops
  
        // by default, we symlink the standard streams to the
        // default tty devices. however, if the standard streams
        // have been overwritten we create a unique device for
        // them instead.
        if (input) {
          FS.createDevice('/dev', 'stdin', input);
        } else {
          FS.symlink('/dev/tty', '/dev/stdin');
        }
        if (output) {
          FS.createDevice('/dev', 'stdout', null, output);
        } else {
          FS.symlink('/dev/tty', '/dev/stdout');
        }
        if (error) {
          FS.createDevice('/dev', 'stderr', null, error);
        } else {
          FS.symlink('/dev/tty1', '/dev/stderr');
        }
  
        // open default streams for the stdin, stdout and stderr devices
        var stdin = FS.open('/dev/stdin', 0);
        var stdout = FS.open('/dev/stdout', 1);
        var stderr = FS.open('/dev/stderr', 1);
        assert(stdin.fd === 0, `invalid handle for stdin (${stdin.fd})`);
        assert(stdout.fd === 1, `invalid handle for stdout (${stdout.fd})`);
        assert(stderr.fd === 2, `invalid handle for stderr (${stderr.fd})`);
      },
  staticInit() {
        FS.nameTable = new Array(4096);
  
        FS.mount(MEMFS, {}, '/');
  
        FS.createDefaultDirectories();
        FS.createDefaultDevices();
        FS.createSpecialDirectories();
  
        FS.filesystems = {
          'MEMFS': MEMFS,
        };
      },
  init(input, output, error) {
        assert(!FS.initialized, 'FS.init was previously called. If you want to initialize later with custom parameters, remove any earlier calls (note that one is automatically added to the generated code)');
        FS.initialized = true;
  
        // Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
        input ??= Module['stdin'];
        output ??= Module['stdout'];
        error ??= Module['stderr'];
  
        FS.createStandardStreams(input, output, error);
      },
  quit() {
        FS.initialized = false;
        // force-flush all streams, so we get musl std streams printed out
        _fflush(0);
        // close all of our streams
        for (var i = 0; i < FS.streams.length; i++) {
          var stream = FS.streams[i];
          if (!stream) {
            continue;
          }
          FS.close(stream);
        }
      },
  findObject(path, dontResolveLastLink) {
        var ret = FS.analyzePath(path, dontResolveLastLink);
        if (!ret.exists) {
          return null;
        }
        return ret.object;
      },
  analyzePath(path, dontResolveLastLink) {
        // operate from within the context of the symlink's target
        try {
          var lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
          path = lookup.path;
        } catch (e) {
        }
        var ret = {
          isRoot: false, exists: false, error: 0, name: null, path: null, object: null,
          parentExists: false, parentPath: null, parentObject: null
        };
        try {
          var lookup = FS.lookupPath(path, { parent: true });
          ret.parentExists = true;
          ret.parentPath = lookup.path;
          ret.parentObject = lookup.node;
          ret.name = PATH.basename(path);
          lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
          ret.exists = true;
          ret.path = lookup.path;
          ret.object = lookup.node;
          ret.name = lookup.node.name;
          ret.isRoot = lookup.path === '/';
        } catch (e) {
          ret.error = e.errno;
        };
        return ret;
      },
  createPath(parent, path, canRead, canWrite) {
        parent = typeof parent == 'string' ? parent : FS.getPath(parent);
        var parts = path.split('/').reverse();
        while (parts.length) {
          var part = parts.pop();
          if (!part) continue;
          var current = PATH.join2(parent, part);
          try {
            FS.mkdir(current);
          } catch (e) {
            // ignore EEXIST
          }
          parent = current;
        }
        return current;
      },
  createFile(parent, name, properties, canRead, canWrite) {
        var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
        var mode = FS_getMode(canRead, canWrite);
        return FS.create(path, mode);
      },
  createDataFile(parent, name, data, canRead, canWrite, canOwn) {
        var path = name;
        if (parent) {
          parent = typeof parent == 'string' ? parent : FS.getPath(parent);
          path = name ? PATH.join2(parent, name) : parent;
        }
        var mode = FS_getMode(canRead, canWrite);
        var node = FS.create(path, mode);
        if (data) {
          if (typeof data == 'string') {
            var arr = new Array(data.length);
            for (var i = 0, len = data.length; i < len; ++i) arr[i] = data.charCodeAt(i);
            data = arr;
          }
          // make sure we can write to the file
          FS.chmod(node, mode | 146);
          var stream = FS.open(node, 577);
          FS.write(stream, data, 0, data.length, 0, canOwn);
          FS.close(stream);
          FS.chmod(node, mode);
        }
      },
  createDevice(parent, name, input, output) {
        var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
        var mode = FS_getMode(!!input, !!output);
        FS.createDevice.major ??= 64;
        var dev = FS.makedev(FS.createDevice.major++, 0);
        // Create a fake device that a set of stream ops to emulate
        // the old behavior.
        FS.registerDevice(dev, {
          open(stream) {
            stream.seekable = false;
          },
          close(stream) {
            // flush any pending line data
            if (output?.buffer?.length) {
              output(10);
            }
          },
          read(stream, buffer, offset, length, pos /* ignored */) {
            var bytesRead = 0;
            for (var i = 0; i < length; i++) {
              var result;
              try {
                result = input();
              } catch (e) {
                throw new FS.ErrnoError(29);
              }
              if (result === undefined && bytesRead === 0) {
                throw new FS.ErrnoError(6);
              }
              if (result === null || result === undefined) break;
              bytesRead++;
              buffer[offset+i] = result;
            }
            if (bytesRead) {
              stream.node.atime = Date.now();
            }
            return bytesRead;
          },
          write(stream, buffer, offset, length, pos) {
            for (var i = 0; i < length; i++) {
              try {
                output(buffer[offset+i]);
              } catch (e) {
                throw new FS.ErrnoError(29);
              }
            }
            if (length) {
              stream.node.mtime = stream.node.ctime = Date.now();
            }
            return i;
          }
        });
        return FS.mkdev(path, mode, dev);
      },
  forceLoadFile(obj) {
        if (obj.isDevice || obj.isFolder || obj.link || obj.contents) return true;
        if (typeof XMLHttpRequest != 'undefined') {
          throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.");
        } else { // Command-line.
          try {
            obj.contents = readBinary(obj.url);
            obj.usedBytes = obj.contents.length;
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
        }
      },
  createLazyFile(parent, name, url, canRead, canWrite) {
        // Lazy chunked Uint8Array (implements get and length from Uint8Array).
        // Actual getting is abstracted away for eventual reuse.
        class LazyUint8Array {
          lengthKnown = false;
          chunks = []; // Loaded chunks. Index is the chunk number
          get(idx) {
            if (idx > this.length-1 || idx < 0) {
              return undefined;
            }
            var chunkOffset = idx % this.chunkSize;
            var chunkNum = (idx / this.chunkSize)|0;
            return this.getter(chunkNum)[chunkOffset];
          }
          setDataGetter(getter) {
            this.getter = getter;
          }
          cacheLength() {
            // Find length
            var xhr = new XMLHttpRequest();
            xhr.open('HEAD', url, false);
            xhr.send(null);
            if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
            var datalength = Number(xhr.getResponseHeader("Content-length"));
            var header;
            var hasByteServing = (header = xhr.getResponseHeader("Accept-Ranges")) && header === "bytes";
            var usesGzip = (header = xhr.getResponseHeader("Content-Encoding")) && header === "gzip";
  
            var chunkSize = 1024*1024; // Chunk size in bytes
  
            if (!hasByteServing) chunkSize = datalength;
  
            // Function to get a range from the remote URL.
            var doXHR = (from, to) => {
              if (from > to) throw new Error("invalid range (" + from + ", " + to + ") or no bytes requested!");
              if (to > datalength-1) throw new Error("only " + datalength + " bytes available! programmer error!");
  
              // TODO: Use mozResponseArrayBuffer, responseStream, etc. if available.
              var xhr = new XMLHttpRequest();
              xhr.open('GET', url, false);
              if (datalength !== chunkSize) xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
  
              // Some hints to the browser that we want binary data.
              xhr.responseType = 'arraybuffer';
              if (xhr.overrideMimeType) {
                xhr.overrideMimeType('text/plain; charset=x-user-defined');
              }
  
              xhr.send(null);
              if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
              if (xhr.response !== undefined) {
                return new Uint8Array(/** @type{Array<number>} */(xhr.response || []));
              }
              return intArrayFromString(xhr.responseText || '', true);
            };
            var lazyArray = this;
            lazyArray.setDataGetter((chunkNum) => {
              var start = chunkNum * chunkSize;
              var end = (chunkNum+1) * chunkSize - 1; // including this byte
              end = Math.min(end, datalength-1); // if datalength-1 is selected, this is the last block
              if (typeof lazyArray.chunks[chunkNum] == 'undefined') {
                lazyArray.chunks[chunkNum] = doXHR(start, end);
              }
              if (typeof lazyArray.chunks[chunkNum] == 'undefined') throw new Error('doXHR failed!');
              return lazyArray.chunks[chunkNum];
            });
  
            if (usesGzip || !datalength) {
              // if the server uses gzip or doesn't supply the length, we have to download the whole file to get the (uncompressed) length
              chunkSize = datalength = 1; // this will force getter(0)/doXHR do download the whole file
              datalength = this.getter(0).length;
              chunkSize = datalength;
              out("LazyFiles on gzip forces download of the whole file when length is accessed");
            }
  
            this._length = datalength;
            this._chunkSize = chunkSize;
            this.lengthKnown = true;
          }
          get length() {
            if (!this.lengthKnown) {
              this.cacheLength();
            }
            return this._length;
          }
          get chunkSize() {
            if (!this.lengthKnown) {
              this.cacheLength();
            }
            return this._chunkSize;
          }
        }
  
        if (typeof XMLHttpRequest != 'undefined') {
          if (!ENVIRONMENT_IS_WORKER) throw 'Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc';
          var lazyArray = new LazyUint8Array();
          var properties = { isDevice: false, contents: lazyArray };
        } else {
          var properties = { isDevice: false, url: url };
        }
  
        var node = FS.createFile(parent, name, properties, canRead, canWrite);
        // This is a total hack, but I want to get this lazy file code out of the
        // core of MEMFS. If we want to keep this lazy file concept I feel it should
        // be its own thin LAZYFS proxying calls to MEMFS.
        if (properties.contents) {
          node.contents = properties.contents;
        } else if (properties.url) {
          node.contents = null;
          node.url = properties.url;
        }
        // Add a function that defers querying the file size until it is asked the first time.
        Object.defineProperties(node, {
          usedBytes: {
            get: function() { return this.contents.length; }
          }
        });
        // override each stream op with one that tries to force load the lazy file first
        var stream_ops = {};
        var keys = Object.keys(node.stream_ops);
        keys.forEach((key) => {
          var fn = node.stream_ops[key];
          stream_ops[key] = (...args) => {
            FS.forceLoadFile(node);
            return fn(...args);
          };
        });
        function writeChunks(stream, buffer, offset, length, position) {
          var contents = stream.node.contents;
          if (position >= contents.length)
            return 0;
          var size = Math.min(contents.length - position, length);
          assert(size >= 0);
          if (contents.slice) { // normal array
            for (var i = 0; i < size; i++) {
              buffer[offset + i] = contents[position + i];
            }
          } else {
            for (var i = 0; i < size; i++) { // LazyUint8Array from sync binary XHR
              buffer[offset + i] = contents.get(position + i);
            }
          }
          return size;
        }
        // use a custom read function
        stream_ops.read = (stream, buffer, offset, length, position) => {
          FS.forceLoadFile(node);
          return writeChunks(stream, buffer, offset, length, position)
        };
        // use a custom mmap function
        stream_ops.mmap = (stream, length, position, prot, flags) => {
          FS.forceLoadFile(node);
          var ptr = mmapAlloc(length);
          if (!ptr) {
            throw new FS.ErrnoError(48);
          }
          writeChunks(stream, HEAP8, ptr, length, position);
          return { ptr, allocated: true };
        };
        node.stream_ops = stream_ops;
        return node;
      },
  absolutePath() {
        abort('FS.absolutePath has been removed; use PATH_FS.resolve instead');
      },
  createFolder() {
        abort('FS.createFolder has been removed; use FS.mkdir instead');
      },
  createLink() {
        abort('FS.createLink has been removed; use FS.symlink instead');
      },
  joinPath() {
        abort('FS.joinPath has been removed; use PATH.join instead');
      },
  mmapAlloc() {
        abort('FS.mmapAlloc has been replaced by the top level function mmapAlloc');
      },
  standardizePath() {
        abort('FS.standardizePath has been removed; use PATH.normalize instead');
      },
  };
  
  var SYSCALLS = {
  DEFAULT_POLLMASK:5,
  calculateAt(dirfd, path, allowEmpty) {
        if (PATH.isAbs(path)) {
          return path;
        }
        // relative path
        var dir;
        if (dirfd === -100) {
          dir = FS.cwd();
        } else {
          var dirstream = SYSCALLS.getStreamFromFD(dirfd);
          dir = dirstream.path;
        }
        if (path.length == 0) {
          if (!allowEmpty) {
            throw new FS.ErrnoError(44);;
          }
          return dir;
        }
        return dir + '/' + path;
      },
  writeStat(buf, stat) {
        HEAP32[((buf)>>2)] = stat.dev;
        HEAP32[(((buf)+(4))>>2)] = stat.mode;
        HEAPU32[(((buf)+(8))>>2)] = stat.nlink;
        HEAP32[(((buf)+(12))>>2)] = stat.uid;
        HEAP32[(((buf)+(16))>>2)] = stat.gid;
        HEAP32[(((buf)+(20))>>2)] = stat.rdev;
        HEAP64[(((buf)+(24))>>3)] = BigInt(stat.size);
        HEAP32[(((buf)+(32))>>2)] = 4096;
        HEAP32[(((buf)+(36))>>2)] = stat.blocks;
        var atime = stat.atime.getTime();
        var mtime = stat.mtime.getTime();
        var ctime = stat.ctime.getTime();
        HEAP64[(((buf)+(40))>>3)] = BigInt(Math.floor(atime / 1000));
        HEAPU32[(((buf)+(48))>>2)] = (atime % 1000) * 1000 * 1000;
        HEAP64[(((buf)+(56))>>3)] = BigInt(Math.floor(mtime / 1000));
        HEAPU32[(((buf)+(64))>>2)] = (mtime % 1000) * 1000 * 1000;
        HEAP64[(((buf)+(72))>>3)] = BigInt(Math.floor(ctime / 1000));
        HEAPU32[(((buf)+(80))>>2)] = (ctime % 1000) * 1000 * 1000;
        HEAP64[(((buf)+(88))>>3)] = BigInt(stat.ino);
        return 0;
      },
  writeStatFs(buf, stats) {
        HEAP32[(((buf)+(4))>>2)] = stats.bsize;
        HEAP32[(((buf)+(40))>>2)] = stats.bsize;
        HEAP32[(((buf)+(8))>>2)] = stats.blocks;
        HEAP32[(((buf)+(12))>>2)] = stats.bfree;
        HEAP32[(((buf)+(16))>>2)] = stats.bavail;
        HEAP32[(((buf)+(20))>>2)] = stats.files;
        HEAP32[(((buf)+(24))>>2)] = stats.ffree;
        HEAP32[(((buf)+(28))>>2)] = stats.fsid;
        HEAP32[(((buf)+(44))>>2)] = stats.flags;  // ST_NOSUID
        HEAP32[(((buf)+(36))>>2)] = stats.namelen;
      },
  doMsync(addr, stream, len, flags, offset) {
        if (!FS.isFile(stream.node.mode)) {
          throw new FS.ErrnoError(43);
        }
        if (flags & 2) {
          // MAP_PRIVATE calls need not to be synced back to underlying fs
          return 0;
        }
        var buffer = HEAPU8.slice(addr, addr + len);
        FS.msync(stream, buffer, offset, len, flags);
      },
  getStreamFromFD(fd) {
        var stream = FS.getStreamChecked(fd);
        return stream;
      },
  varargs:undefined,
  getStr(ptr) {
        var ret = UTF8ToString(ptr);
        return ret;
      },
  };
  function ___syscall_faccessat(dirfd, path, amode, flags) {
  try {
  
      path = SYSCALLS.getStr(path);
      assert(flags === 0 || flags == 512);
      path = SYSCALLS.calculateAt(dirfd, path);
      if (amode & ~7) {
        // need a valid mode
        return -28;
      }
      var lookup = FS.lookupPath(path, { follow: true });
      var node = lookup.node;
      if (!node) {
        return -44;
      }
      var perms = '';
      if (amode & 4) perms += 'r';
      if (amode & 2) perms += 'w';
      if (amode & 1) perms += 'x';
      if (perms /* otherwise, they've just passed F_OK */ && FS.nodePermissions(node, perms)) {
        return -2;
      }
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  /** @suppress {duplicate } */
  var syscallGetVarargI = () => {
      assert(SYSCALLS.varargs != undefined);
      // the `+` prepended here is necessary to convince the JSCompiler that varargs is indeed a number.
      var ret = HEAP32[((+SYSCALLS.varargs)>>2)];
      SYSCALLS.varargs += 4;
      return ret;
    };
  var syscallGetVarargP = syscallGetVarargI;
  
  
  function ___syscall_fcntl64(fd, cmd, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (cmd) {
        case 0: {
          var arg = syscallGetVarargI();
          if (arg < 0) {
            return -28;
          }
          while (FS.streams[arg]) {
            arg++;
          }
          var newStream;
          newStream = FS.dupStream(stream, arg);
          return newStream.fd;
        }
        case 1:
        case 2:
          return 0;  // FD_CLOEXEC makes no sense for a single process.
        case 3:
          return stream.flags;
        case 4: {
          var arg = syscallGetVarargI();
          stream.flags |= arg;
          return 0;
        }
        case 12: {
          var arg = syscallGetVarargP();
          var offset = 0;
          // We're always unlocked.
          HEAP16[(((arg)+(offset))>>1)] = 2;
          return 0;
        }
        case 13:
        case 14:
          return 0; // Pretend that the locking is successful.
      }
      return -28;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  
  var stringToUTF8 = (str, outPtr, maxBytesToWrite) => {
      assert(typeof maxBytesToWrite == 'number', 'stringToUTF8(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
      return stringToUTF8Array(str, HEAPU8, outPtr, maxBytesToWrite);
    };
  function ___syscall_getcwd(buf, size) {
  try {
  
      if (size === 0) return -28;
      var cwd = FS.cwd();
      var cwdLengthInBytes = lengthBytesUTF8(cwd) + 1;
      if (size < cwdLengthInBytes) return -68;
      stringToUTF8(cwd, buf, size);
      return cwdLengthInBytes;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  
  function ___syscall_ioctl(fd, op, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (op) {
        case 21509: {
          if (!stream.tty) return -59;
          return 0;
        }
        case 21505: {
          if (!stream.tty) return -59;
          if (stream.tty.ops.ioctl_tcgets) {
            var termios = stream.tty.ops.ioctl_tcgets(stream);
            var argp = syscallGetVarargP();
            HEAP32[((argp)>>2)] = termios.c_iflag || 0;
            HEAP32[(((argp)+(4))>>2)] = termios.c_oflag || 0;
            HEAP32[(((argp)+(8))>>2)] = termios.c_cflag || 0;
            HEAP32[(((argp)+(12))>>2)] = termios.c_lflag || 0;
            for (var i = 0; i < 32; i++) {
              HEAP8[(argp + i)+(17)] = termios.c_cc[i] || 0;
            }
            return 0;
          }
          return 0;
        }
        case 21510:
        case 21511:
        case 21512: {
          if (!stream.tty) return -59;
          return 0; // no-op, not actually adjusting terminal settings
        }
        case 21506:
        case 21507:
        case 21508: {
          if (!stream.tty) return -59;
          if (stream.tty.ops.ioctl_tcsets) {
            var argp = syscallGetVarargP();
            var c_iflag = HEAP32[((argp)>>2)];
            var c_oflag = HEAP32[(((argp)+(4))>>2)];
            var c_cflag = HEAP32[(((argp)+(8))>>2)];
            var c_lflag = HEAP32[(((argp)+(12))>>2)];
            var c_cc = []
            for (var i = 0; i < 32; i++) {
              c_cc.push(HEAP8[(argp + i)+(17)]);
            }
            return stream.tty.ops.ioctl_tcsets(stream.tty, op, { c_iflag, c_oflag, c_cflag, c_lflag, c_cc });
          }
          return 0; // no-op, not actually adjusting terminal settings
        }
        case 21519: {
          if (!stream.tty) return -59;
          var argp = syscallGetVarargP();
          HEAP32[((argp)>>2)] = 0;
          return 0;
        }
        case 21520: {
          if (!stream.tty) return -59;
          return -28; // not supported
        }
        case 21531: {
          var argp = syscallGetVarargP();
          return FS.ioctl(stream, op, argp);
        }
        case 21523: {
          // TODO: in theory we should write to the winsize struct that gets
          // passed in, but for now musl doesn't read anything on it
          if (!stream.tty) return -59;
          if (stream.tty.ops.ioctl_tiocgwinsz) {
            var winsize = stream.tty.ops.ioctl_tiocgwinsz(stream.tty);
            var argp = syscallGetVarargP();
            HEAP16[((argp)>>1)] = winsize[0];
            HEAP16[(((argp)+(2))>>1)] = winsize[1];
          }
          return 0;
        }
        case 21524: {
          // TODO: technically, this ioctl call should change the window size.
          // but, since emscripten doesn't have any concept of a terminal window
          // yet, we'll just silently throw it away as we do TIOCGWINSZ
          if (!stream.tty) return -59;
          return 0;
        }
        case 21515: {
          if (!stream.tty) return -59;
          return 0;
        }
        default: return -28; // not supported
      }
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  
  function ___syscall_openat(dirfd, path, flags, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      path = SYSCALLS.getStr(path);
      path = SYSCALLS.calculateAt(dirfd, path);
      var mode = varargs ? syscallGetVarargI() : 0;
      return FS.open(path, flags, mode).fd;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  var __abort_js = () =>
      abort('native code called abort()');

  var isLeapYear = (year) => year%4 === 0 && (year%100 !== 0 || year%400 === 0);
  
  var MONTH_DAYS_LEAP_CUMULATIVE = [0,31,60,91,121,152,182,213,244,274,305,335];
  
  var MONTH_DAYS_REGULAR_CUMULATIVE = [0,31,59,90,120,151,181,212,243,273,304,334];
  var ydayFromDate = (date) => {
      var leap = isLeapYear(date.getFullYear());
      var monthDaysCumulative = (leap ? MONTH_DAYS_LEAP_CUMULATIVE : MONTH_DAYS_REGULAR_CUMULATIVE);
      var yday = monthDaysCumulative[date.getMonth()] + date.getDate() - 1; // -1 since it's days since Jan 1
  
      return yday;
    };
  
  var INT53_MAX = 9007199254740992;
  
  var INT53_MIN = -9007199254740992;
  var bigintToI53Checked = (num) => (num < INT53_MIN || num > INT53_MAX) ? NaN : Number(num);
  function __localtime_js(time, tmPtr) {
    time = bigintToI53Checked(time);
  
    
      var date = new Date(time*1000);
      HEAP32[((tmPtr)>>2)] = date.getSeconds();
      HEAP32[(((tmPtr)+(4))>>2)] = date.getMinutes();
      HEAP32[(((tmPtr)+(8))>>2)] = date.getHours();
      HEAP32[(((tmPtr)+(12))>>2)] = date.getDate();
      HEAP32[(((tmPtr)+(16))>>2)] = date.getMonth();
      HEAP32[(((tmPtr)+(20))>>2)] = date.getFullYear()-1900;
      HEAP32[(((tmPtr)+(24))>>2)] = date.getDay();
  
      var yday = ydayFromDate(date)|0;
      HEAP32[(((tmPtr)+(28))>>2)] = yday;
      HEAP32[(((tmPtr)+(36))>>2)] = -(date.getTimezoneOffset() * 60);
  
      // Attention: DST is in December in South, and some regions don't have DST at all.
      var start = new Date(date.getFullYear(), 0, 1);
      var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
      var winterOffset = start.getTimezoneOffset();
      var dst = (summerOffset != winterOffset && date.getTimezoneOffset() == Math.min(winterOffset, summerOffset))|0;
      HEAP32[(((tmPtr)+(32))>>2)] = dst;
    ;
  }

  
  var __tzset_js = (timezone, daylight, std_name, dst_name) => {
      // TODO: Use (malleable) environment variables instead of system settings.
      var currentYear = new Date().getFullYear();
      var winter = new Date(currentYear, 0, 1);
      var summer = new Date(currentYear, 6, 1);
      var winterOffset = winter.getTimezoneOffset();
      var summerOffset = summer.getTimezoneOffset();
  
      // Local standard timezone offset. Local standard time is not adjusted for
      // daylight savings.  This code uses the fact that getTimezoneOffset returns
      // a greater value during Standard Time versus Daylight Saving Time (DST).
      // Thus it determines the expected output during Standard Time, and it
      // compares whether the output of the given date the same (Standard) or less
      // (DST).
      var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
  
      // timezone is specified as seconds west of UTC ("The external variable
      // `timezone` shall be set to the difference, in seconds, between
      // Coordinated Universal Time (UTC) and local standard time."), the same
      // as returned by stdTimezoneOffset.
      // See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
      HEAPU32[((timezone)>>2)] = stdTimezoneOffset * 60;
  
      HEAP32[((daylight)>>2)] = Number(winterOffset != summerOffset);
  
      var extractZone = (timezoneOffset) => {
        // Why inverse sign?
        // Read here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset
        var sign = timezoneOffset >= 0 ? "-" : "+";
  
        var absOffset = Math.abs(timezoneOffset)
        var hours = String(Math.floor(absOffset / 60)).padStart(2, "0");
        var minutes = String(absOffset % 60).padStart(2, "0");
  
        return `UTC${sign}${hours}${minutes}`;
      }
  
      var winterName = extractZone(winterOffset);
      var summerName = extractZone(summerOffset);
      assert(winterName);
      assert(summerName);
      assert(lengthBytesUTF8(winterName) <= 16, `timezone name truncated to fit in TZNAME_MAX (${winterName})`);
      assert(lengthBytesUTF8(summerName) <= 16, `timezone name truncated to fit in TZNAME_MAX (${summerName})`);
      if (summerOffset < winterOffset) {
        // Northern hemisphere
        stringToUTF8(winterName, std_name, 17);
        stringToUTF8(summerName, dst_name, 17);
      } else {
        stringToUTF8(winterName, dst_name, 17);
        stringToUTF8(summerName, std_name, 17);
      }
    };

  var _emscripten_get_now = () => performance.now();
  
  var _emscripten_date_now = () => Date.now();
  
  var nowIsMonotonic = 1;
  
  var checkWasiClock = (clock_id) => clock_id >= 0 && clock_id <= 3;
  
  function _clock_time_get(clk_id, ignored_precision, ptime) {
    ignored_precision = bigintToI53Checked(ignored_precision);
  
    
      if (!checkWasiClock(clk_id)) {
        return 28;
      }
      var now;
      // all wasi clocks but realtime are monotonic
      if (clk_id === 0) {
        now = _emscripten_date_now();
      } else if (nowIsMonotonic) {
        now = _emscripten_get_now();
      } else {
        return 52;
      }
      // "now" is in ms, and wasi times are in ns.
      var nsec = Math.round(now * 1000 * 1000);
      HEAP64[((ptime)>>3)] = BigInt(nsec);
      return 0;
    ;
  }

  var readEmAsmArgsArray = [];
  var readEmAsmArgs = (sigPtr, buf) => {
      // Nobody should have mutated _readEmAsmArgsArray underneath us to be something else than an array.
      assert(Array.isArray(readEmAsmArgsArray));
      // The input buffer is allocated on the stack, so it must be stack-aligned.
      assert(buf % 16 == 0);
      readEmAsmArgsArray.length = 0;
      var ch;
      // Most arguments are i32s, so shift the buffer pointer so it is a plain
      // index into HEAP32.
      while (ch = HEAPU8[sigPtr++]) {
        var chr = String.fromCharCode(ch);
        var validChars = ['d', 'f', 'i', 'p'];
        // In WASM_BIGINT mode we support passing i64 values as bigint.
        validChars.push('j');
        assert(validChars.includes(chr), `Invalid character ${ch}("${chr}") in readEmAsmArgs! Use only [${validChars}], and do not specify "v" for void return argument.`);
        // Floats are always passed as doubles, so all types except for 'i'
        // are 8 bytes and require alignment.
        var wide = (ch != 105);
        wide &= (ch != 112);
        buf += wide && (buf % 8) ? 4 : 0;
        readEmAsmArgsArray.push(
          // Special case for pointers under wasm64 or CAN_ADDRESS_2GB mode.
          ch == 112 ? HEAPU32[((buf)>>2)] :
          ch == 106 ? HEAP64[((buf)>>3)] :
          ch == 105 ?
            HEAP32[((buf)>>2)] :
            HEAPF64[((buf)>>3)]
        );
        buf += wide ? 8 : 4;
      }
      return readEmAsmArgsArray;
    };
  var runEmAsmFunction = (code, sigPtr, argbuf) => {
      var args = readEmAsmArgs(sigPtr, argbuf);
      assert(ASM_CONSTS.hasOwnProperty(code), `No EM_ASM constant found at address ${code}.  The loaded WebAssembly file is likely out of sync with the generated JavaScript.`);
      return ASM_CONSTS[code](...args);
    };
  var _emscripten_asm_const_int = (code, sigPtr, argbuf) => {
      return runEmAsmFunction(code, sigPtr, argbuf);
    };


  var onExits = [];
  var addOnExit = (cb) => onExits.unshift(cb);
  var JSEvents = {
  memcpy(target, src, size) {
        HEAP8.set(HEAP8.subarray(src, src + size), target);
      },
  removeAllEventListeners() {
        while (JSEvents.eventHandlers.length) {
          JSEvents._removeHandler(JSEvents.eventHandlers.length - 1);
        }
        JSEvents.deferredCalls = [];
      },
  inEventHandler:0,
  deferredCalls:[],
  deferCall(targetFunction, precedence, argsList) {
        function arraysHaveEqualContent(arrA, arrB) {
          if (arrA.length != arrB.length) return false;
  
          for (var i in arrA) {
            if (arrA[i] != arrB[i]) return false;
          }
          return true;
        }
        // Test if the given call was already queued, and if so, don't add it again.
        for (var call of JSEvents.deferredCalls) {
          if (call.targetFunction == targetFunction && arraysHaveEqualContent(call.argsList, argsList)) {
            return;
          }
        }
        JSEvents.deferredCalls.push({
          targetFunction,
          precedence,
          argsList
        });
  
        JSEvents.deferredCalls.sort((x,y) => x.precedence < y.precedence);
      },
  removeDeferredCalls(targetFunction) {
        JSEvents.deferredCalls = JSEvents.deferredCalls.filter((call) => call.targetFunction != targetFunction);
      },
  canPerformEventHandlerRequests() {
        if (navigator.userActivation) {
          // Verify against transient activation status from UserActivation API
          // whether it is possible to perform a request here without needing to defer. See
          // https://developer.mozilla.org/en-US/docs/Web/Security/User_activation#transient_activation
          // and https://caniuse.com/mdn-api_useractivation
          // At the time of writing, Firefox does not support this API: https://bugzilla.mozilla.org/show_bug.cgi?id=1791079
          return navigator.userActivation.isActive;
        }
  
        return JSEvents.inEventHandler && JSEvents.currentEventHandler.allowsDeferredCalls;
      },
  runDeferredCalls() {
        if (!JSEvents.canPerformEventHandlerRequests()) {
          return;
        }
        var deferredCalls = JSEvents.deferredCalls;
        JSEvents.deferredCalls = [];
        for (var call of deferredCalls) {
          call.targetFunction(...call.argsList);
        }
      },
  eventHandlers:[],
  removeAllHandlersOnTarget:(target, eventTypeString) => {
        for (var i = 0; i < JSEvents.eventHandlers.length; ++i) {
          if (JSEvents.eventHandlers[i].target == target &&
            (!eventTypeString || eventTypeString == JSEvents.eventHandlers[i].eventTypeString)) {
             JSEvents._removeHandler(i--);
           }
        }
      },
  _removeHandler(i) {
        var h = JSEvents.eventHandlers[i];
        h.target.removeEventListener(h.eventTypeString, h.eventListenerFunc, h.useCapture);
        JSEvents.eventHandlers.splice(i, 1);
      },
  registerOrRemoveHandler(eventHandler) {
        if (!eventHandler.target) {
          err('registerOrRemoveHandler: the target element for event handler registration does not exist, when processing the following event handler registration:');
          console.dir(eventHandler);
          return -4;
        }
        if (eventHandler.callbackfunc) {
          eventHandler.eventListenerFunc = function(event) {
            // Increment nesting count for the event handler.
            ++JSEvents.inEventHandler;
            JSEvents.currentEventHandler = eventHandler;
            // Process any old deferred calls the user has placed.
            JSEvents.runDeferredCalls();
            // Process the actual event, calls back to user C code handler.
            eventHandler.handlerFunc(event);
            // Process any new deferred calls that were placed right now from this event handler.
            JSEvents.runDeferredCalls();
            // Out of event handler - restore nesting count.
            --JSEvents.inEventHandler;
          };
  
          eventHandler.target.addEventListener(eventHandler.eventTypeString,
                                               eventHandler.eventListenerFunc,
                                               eventHandler.useCapture);
          JSEvents.eventHandlers.push(eventHandler);
        } else {
          for (var i = 0; i < JSEvents.eventHandlers.length; ++i) {
            if (JSEvents.eventHandlers[i].target == eventHandler.target
             && JSEvents.eventHandlers[i].eventTypeString == eventHandler.eventTypeString) {
               JSEvents._removeHandler(i--);
             }
          }
        }
        return 0;
      },
  getNodeNameForTarget(target) {
        if (!target) return '';
        if (target == window) return '#window';
        if (target == screen) return '#screen';
        return target?.nodeName || '';
      },
  fullscreenEnabled() {
        return document.fullscreenEnabled
        // Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitFullscreenEnabled.
        // TODO: If Safari at some point ships with unprefixed version, update the version check above.
        || document.webkitFullscreenEnabled
         ;
      },
  };
  
  var maybeCStringToJsString = (cString) => {
      // "cString > 2" checks if the input is a number, and isn't of the special
      // values we accept here, EMSCRIPTEN_EVENT_TARGET_* (which map to 0, 1, 2).
      // In other words, if cString > 2 then it's a pointer to a valid place in
      // memory, and points to a C string.
      return cString > 2 ? UTF8ToString(cString) : cString;
    };
  
  /** @type {Object} */
  var specialHTMLTargets = [0, typeof document != 'undefined' ? document : 0, typeof window != 'undefined' ? window : 0];
  var findEventTarget = (target) => {
      target = maybeCStringToJsString(target);
      var domElement = specialHTMLTargets[target] || (typeof document != 'undefined' ? document.querySelector(target) : null);
      return domElement;
    };
  
  var getBoundingClientRect = (e) => specialHTMLTargets.indexOf(e) < 0 ? e.getBoundingClientRect() : {'left':0,'top':0};
  var _emscripten_get_element_css_size = (target, width, height) => {
      target = findEventTarget(target);
      if (!target) return -4;
  
      var rect = getBoundingClientRect(target);
      HEAPF64[((width)>>3)] = rect.width;
      HEAPF64[((height)>>3)] = rect.height;
  
      return 0;
    };

  
  var fillGamepadEventData = (eventStruct, e) => {
      HEAPF64[((eventStruct)>>3)] = e.timestamp;
      for (var i = 0; i < e.axes.length; ++i) {
        HEAPF64[(((eventStruct+i*8)+(16))>>3)] = e.axes[i];
      }
      for (var i = 0; i < e.buttons.length; ++i) {
        if (typeof e.buttons[i] == 'object') {
          HEAPF64[(((eventStruct+i*8)+(528))>>3)] = e.buttons[i].value;
        } else {
          HEAPF64[(((eventStruct+i*8)+(528))>>3)] = e.buttons[i];
        }
      }
      for (var i = 0; i < e.buttons.length; ++i) {
        if (typeof e.buttons[i] == 'object') {
          HEAP8[(eventStruct+i)+(1040)] = e.buttons[i].pressed;
        } else {
          // Assigning a boolean to HEAP32, that's ok, but Closure would like to warn about it:
          /** @suppress {checkTypes} */
          HEAP8[(eventStruct+i)+(1040)] = e.buttons[i] == 1;
        }
      }
      HEAP8[(eventStruct)+(1104)] = e.connected;
      HEAP32[(((eventStruct)+(1108))>>2)] = e.index;
      HEAP32[(((eventStruct)+(8))>>2)] = e.axes.length;
      HEAP32[(((eventStruct)+(12))>>2)] = e.buttons.length;
      stringToUTF8(e.id, eventStruct + 1112, 64);
      stringToUTF8(e.mapping, eventStruct + 1176, 64);
    };
  var _emscripten_get_gamepad_status = (index, gamepadState) => {
      if (!JSEvents.lastGamepadState) throw 'emscripten_get_gamepad_status() can only be called after having first called emscripten_sample_gamepad_data() and that function has returned EMSCRIPTEN_RESULT_SUCCESS!';
      // INVALID_PARAM is returned on a Gamepad index that never was there.
      if (index < 0 || index >= JSEvents.lastGamepadState.length) return -5;
  
      // NO_DATA is returned on a Gamepad index that was removed.
      // For previously disconnected gamepads there should be an empty slot (null/undefined/false) at the index.
      // This is because gamepads must keep their original position in the array.
      // For example, removing the first of two gamepads produces [null/undefined/false, gamepad].
      if (!JSEvents.lastGamepadState[index]) return -7;
  
      fillGamepadEventData(gamepadState, JSEvents.lastGamepadState[index]);
      return 0;
    };


  var _emscripten_get_num_gamepads = () => {
      if (!JSEvents.lastGamepadState) throw 'emscripten_get_num_gamepads() can only be called after having first called emscripten_sample_gamepad_data() and that function has returned EMSCRIPTEN_RESULT_SUCCESS!';
      // N.B. Do not call emscripten_get_num_gamepads() unless having first called emscripten_sample_gamepad_data(), and that has returned EMSCRIPTEN_RESULT_SUCCESS.
      // Otherwise the following line will throw an exception.
      return JSEvents.lastGamepadState.length;
    };

  var GLctx;
  
  var webgl_enable_ANGLE_instanced_arrays = (ctx) => {
      // Extension available in WebGL 1 from Firefox 26 and Google Chrome 30 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('ANGLE_instanced_arrays');
      // Because this extension is a core function in WebGL 2, assign the extension entry points in place of
      // where the core functions will reside in WebGL 2. This way the calling code can call these without
      // having to dynamically branch depending if running against WebGL 1 or WebGL 2.
      if (ext) {
        ctx['vertexAttribDivisor'] = (index, divisor) => ext['vertexAttribDivisorANGLE'](index, divisor);
        ctx['drawArraysInstanced'] = (mode, first, count, primcount) => ext['drawArraysInstancedANGLE'](mode, first, count, primcount);
        ctx['drawElementsInstanced'] = (mode, count, type, indices, primcount) => ext['drawElementsInstancedANGLE'](mode, count, type, indices, primcount);
        return 1;
      }
    };
  
  var webgl_enable_OES_vertex_array_object = (ctx) => {
      // Extension available in WebGL 1 from Firefox 25 and WebKit 536.28/desktop Safari 6.0.3 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('OES_vertex_array_object');
      if (ext) {
        ctx['createVertexArray'] = () => ext['createVertexArrayOES']();
        ctx['deleteVertexArray'] = (vao) => ext['deleteVertexArrayOES'](vao);
        ctx['bindVertexArray'] = (vao) => ext['bindVertexArrayOES'](vao);
        ctx['isVertexArray'] = (vao) => ext['isVertexArrayOES'](vao);
        return 1;
      }
    };
  
  var webgl_enable_WEBGL_draw_buffers = (ctx) => {
      // Extension available in WebGL 1 from Firefox 28 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('WEBGL_draw_buffers');
      if (ext) {
        ctx['drawBuffers'] = (n, bufs) => ext['drawBuffersWEBGL'](n, bufs);
        return 1;
      }
    };
  
  var webgl_enable_EXT_polygon_offset_clamp = (ctx) =>
      !!(ctx.extPolygonOffsetClamp = ctx.getExtension('EXT_polygon_offset_clamp'));
  
  var webgl_enable_EXT_clip_control = (ctx) =>
      !!(ctx.extClipControl = ctx.getExtension('EXT_clip_control'));
  
  var webgl_enable_WEBGL_polygon_mode = (ctx) =>
      !!(ctx.webglPolygonMode = ctx.getExtension('WEBGL_polygon_mode'));
  
  var webgl_enable_WEBGL_multi_draw = (ctx) =>
      // Closure is expected to be allowed to minify the '.multiDrawWebgl' property, so not accessing it quoted.
      !!(ctx.multiDrawWebgl = ctx.getExtension('WEBGL_multi_draw'));
  
  var getEmscriptenSupportedExtensions = (ctx) => {
      // Restrict the list of advertised extensions to those that we actually
      // support.
      var supportedExtensions = [
        // WebGL 1 extensions
        'ANGLE_instanced_arrays',
        'EXT_blend_minmax',
        'EXT_disjoint_timer_query',
        'EXT_frag_depth',
        'EXT_shader_texture_lod',
        'EXT_sRGB',
        'OES_element_index_uint',
        'OES_fbo_render_mipmap',
        'OES_standard_derivatives',
        'OES_texture_float',
        'OES_texture_half_float',
        'OES_texture_half_float_linear',
        'OES_vertex_array_object',
        'WEBGL_color_buffer_float',
        'WEBGL_depth_texture',
        'WEBGL_draw_buffers',
        // WebGL 1 and WebGL 2 extensions
        'EXT_clip_control',
        'EXT_color_buffer_half_float',
        'EXT_depth_clamp',
        'EXT_float_blend',
        'EXT_polygon_offset_clamp',
        'EXT_texture_compression_bptc',
        'EXT_texture_compression_rgtc',
        'EXT_texture_filter_anisotropic',
        'KHR_parallel_shader_compile',
        'OES_texture_float_linear',
        'WEBGL_blend_func_extended',
        'WEBGL_compressed_texture_astc',
        'WEBGL_compressed_texture_etc',
        'WEBGL_compressed_texture_etc1',
        'WEBGL_compressed_texture_s3tc',
        'WEBGL_compressed_texture_s3tc_srgb',
        'WEBGL_debug_renderer_info',
        'WEBGL_debug_shaders',
        'WEBGL_lose_context',
        'WEBGL_multi_draw',
        'WEBGL_polygon_mode'
      ];
      // .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
      return (ctx.getSupportedExtensions() || []).filter(ext => supportedExtensions.includes(ext));
    };
  
  
  var GL = {
  counter:1,
  buffers:[],
  programs:[],
  framebuffers:[],
  renderbuffers:[],
  textures:[],
  shaders:[],
  vaos:[],
  contexts:[],
  offscreenCanvases:{
  },
  queries:[],
  stringCache:{
  },
  unpackAlignment:4,
  unpackRowLength:0,
  recordError:(errorCode) => {
        if (!GL.lastError) {
          GL.lastError = errorCode;
        }
      },
  getNewId:(table) => {
        var ret = GL.counter++;
        for (var i = table.length; i < ret; i++) {
          table[i] = null;
        }
        return ret;
      },
  genObject:(n, buffers, createFunction, objectTable
        ) => {
        for (var i = 0; i < n; i++) {
          var buffer = GLctx[createFunction]();
          var id = buffer && GL.getNewId(objectTable);
          if (buffer) {
            buffer.name = id;
            objectTable[id] = buffer;
          } else {
            GL.recordError(0x502 /* GL_INVALID_OPERATION */);
          }
          HEAP32[(((buffers)+(i*4))>>2)] = id;
        }
      },
  getSource:(shader, count, string, length) => {
        var source = '';
        for (var i = 0; i < count; ++i) {
          var len = length ? HEAPU32[(((length)+(i*4))>>2)] : undefined;
          source += UTF8ToString(HEAPU32[(((string)+(i*4))>>2)], len);
        }
        return source;
      },
  createContext:(/** @type {HTMLCanvasElement} */ canvas, webGLContextAttributes) => {
  
        // BUG: Workaround Safari WebGL issue: After successfully acquiring WebGL
        // context on a canvas, calling .getContext() will always return that
        // context independent of which 'webgl' or 'webgl2'
        // context version was passed. See:
        //   https://bugs.webkit.org/show_bug.cgi?id=222758
        // and:
        //   https://github.com/emscripten-core/emscripten/issues/13295.
        // TODO: Once the bug is fixed and shipped in Safari, adjust the Safari
        // version field in above check.
        if (!canvas.getContextSafariWebGL2Fixed) {
          canvas.getContextSafariWebGL2Fixed = canvas.getContext;
          /** @type {function(this:HTMLCanvasElement, string, (Object|null)=): (Object|null)} */
          function fixedGetContext(ver, attrs) {
            var gl = canvas.getContextSafariWebGL2Fixed(ver, attrs);
            return ((ver == 'webgl') == (gl instanceof WebGLRenderingContext)) ? gl : null;
          }
          canvas.getContext = fixedGetContext;
        }
  
        var ctx =
          (canvas.getContext("webgl", webGLContextAttributes)
            // https://caniuse.com/#feat=webgl
            );
  
        if (!ctx) return 0;
  
        var handle = GL.registerContext(ctx, webGLContextAttributes);
  
        return handle;
      },
  registerContext:(ctx, webGLContextAttributes) => {
        // without pthreads a context is just an integer ID
        var handle = GL.getNewId(GL.contexts);
  
        var context = {
          handle,
          attributes: webGLContextAttributes,
          version: webGLContextAttributes.majorVersion,
          GLctx: ctx
        };
  
        // Store the created context object so that we can access the context
        // given a canvas without having to pass the parameters again.
        if (ctx.canvas) ctx.canvas.GLctxObject = context;
        GL.contexts[handle] = context;
        if (typeof webGLContextAttributes.enableExtensionsByDefault == 'undefined' || webGLContextAttributes.enableExtensionsByDefault) {
          GL.initExtensions(context);
        }
  
        return handle;
      },
  makeContextCurrent:(contextHandle) => {
  
        // Active Emscripten GL layer context object.
        GL.currentContext = GL.contexts[contextHandle];
        // Active WebGL context object.
        Module['ctx'] = GLctx = GL.currentContext?.GLctx;
        return !(contextHandle && !GLctx);
      },
  getContext:(contextHandle) => {
        return GL.contexts[contextHandle];
      },
  deleteContext:(contextHandle) => {
        if (GL.currentContext === GL.contexts[contextHandle]) {
          GL.currentContext = null;
        }
        if (typeof JSEvents == 'object') {
          // Release all JS event handlers on the DOM element that the GL context is
          // associated with since the context is now deleted.
          JSEvents.removeAllHandlersOnTarget(GL.contexts[contextHandle].GLctx.canvas);
        }
        // Make sure the canvas object no longer refers to the context object so
        // there are no GC surprises.
        if (GL.contexts[contextHandle]?.GLctx.canvas) {
          GL.contexts[contextHandle].GLctx.canvas.GLctxObject = undefined;
        }
        GL.contexts[contextHandle] = null;
      },
  initExtensions:(context) => {
        // If this function is called without a specific context object, init the
        // extensions of the currently active context.
        context ||= GL.currentContext;
  
        if (context.initExtensionsDone) return;
        context.initExtensionsDone = true;
  
        var GLctx = context.GLctx;
  
        // Detect the presence of a few extensions manually, ction GL interop
        // layer itself will need to know if they exist.
  
        // Extensions that are available in both WebGL 1 and WebGL 2
        webgl_enable_WEBGL_multi_draw(GLctx);
        webgl_enable_EXT_polygon_offset_clamp(GLctx);
        webgl_enable_EXT_clip_control(GLctx);
        webgl_enable_WEBGL_polygon_mode(GLctx);
        // Extensions that are only available in WebGL 1 (the calls will be no-ops
        // if called on a WebGL 2 context active)
        webgl_enable_ANGLE_instanced_arrays(GLctx);
        webgl_enable_OES_vertex_array_object(GLctx);
        webgl_enable_WEBGL_draw_buffers(GLctx);
        {
          GLctx.disjointTimerQueryExt = GLctx.getExtension("EXT_disjoint_timer_query");
        }
  
        getEmscriptenSupportedExtensions(GLctx).forEach((ext) => {
          // WEBGL_lose_context, WEBGL_debug_renderer_info and WEBGL_debug_shaders
          // are not enabled by default.
          if (!ext.includes('lose_context') && !ext.includes('debug')) {
            // Call .getExtension() to enable that extension permanently.
            GLctx.getExtension(ext);
          }
        });
      },
  };
  /** @suppress {duplicate } */
  var _glActiveTexture = (x0) => GLctx.activeTexture(x0);
  var _emscripten_glActiveTexture = _glActiveTexture;

  /** @suppress {duplicate } */
  var _glAttachShader = (program, shader) => {
      GLctx.attachShader(GL.programs[program], GL.shaders[shader]);
    };
  var _emscripten_glAttachShader = _glAttachShader;

  /** @suppress {duplicate } */
  var _glBeginQueryEXT = (target, id) => {
      GLctx.disjointTimerQueryExt['beginQueryEXT'](target, GL.queries[id]);
    };
  var _emscripten_glBeginQueryEXT = _glBeginQueryEXT;

  
  /** @suppress {duplicate } */
  var _glBindAttribLocation = (program, index, name) => {
      GLctx.bindAttribLocation(GL.programs[program], index, UTF8ToString(name));
    };
  var _emscripten_glBindAttribLocation = _glBindAttribLocation;

  /** @suppress {duplicate } */
  var _glBindBuffer = (target, buffer) => {
  
      GLctx.bindBuffer(target, GL.buffers[buffer]);
    };
  var _emscripten_glBindBuffer = _glBindBuffer;

  /** @suppress {duplicate } */
  var _glBindFramebuffer = (target, framebuffer) => {
  
      GLctx.bindFramebuffer(target, GL.framebuffers[framebuffer]);
  
    };
  var _emscripten_glBindFramebuffer = _glBindFramebuffer;

  /** @suppress {duplicate } */
  var _glBindRenderbuffer = (target, renderbuffer) => {
      GLctx.bindRenderbuffer(target, GL.renderbuffers[renderbuffer]);
    };
  var _emscripten_glBindRenderbuffer = _glBindRenderbuffer;

  /** @suppress {duplicate } */
  var _glBindTexture = (target, texture) => {
      GLctx.bindTexture(target, GL.textures[texture]);
    };
  var _emscripten_glBindTexture = _glBindTexture;

  
  /** @suppress {duplicate } */
  var _glBindVertexArray = (vao) => {
      GLctx.bindVertexArray(GL.vaos[vao]);
    };
  /** @suppress {duplicate } */
  var _glBindVertexArrayOES = _glBindVertexArray;
  var _emscripten_glBindVertexArrayOES = _glBindVertexArrayOES;

  /** @suppress {duplicate } */
  var _glBlendColor = (x0, x1, x2, x3) => GLctx.blendColor(x0, x1, x2, x3);
  var _emscripten_glBlendColor = _glBlendColor;

  /** @suppress {duplicate } */
  var _glBlendEquation = (x0) => GLctx.blendEquation(x0);
  var _emscripten_glBlendEquation = _glBlendEquation;

  /** @suppress {duplicate } */
  var _glBlendEquationSeparate = (x0, x1) => GLctx.blendEquationSeparate(x0, x1);
  var _emscripten_glBlendEquationSeparate = _glBlendEquationSeparate;

  /** @suppress {duplicate } */
  var _glBlendFunc = (x0, x1) => GLctx.blendFunc(x0, x1);
  var _emscripten_glBlendFunc = _glBlendFunc;

  /** @suppress {duplicate } */
  var _glBlendFuncSeparate = (x0, x1, x2, x3) => GLctx.blendFuncSeparate(x0, x1, x2, x3);
  var _emscripten_glBlendFuncSeparate = _glBlendFuncSeparate;

  /** @suppress {duplicate } */
  var _glBufferData = (target, size, data, usage) => {
  
      // N.b. here first form specifies a heap subarray, second form an integer
      // size, so the ?: code here is polymorphic. It is advised to avoid
      // randomly mixing both uses in calling code, to avoid any potential JS
      // engine JIT issues.
      GLctx.bufferData(target, data ? HEAPU8.subarray(data, data+size) : size, usage);
    };
  var _emscripten_glBufferData = _glBufferData;

  /** @suppress {duplicate } */
  var _glBufferSubData = (target, offset, size, data) => {
      GLctx.bufferSubData(target, offset, HEAPU8.subarray(data, data+size));
    };
  var _emscripten_glBufferSubData = _glBufferSubData;

  /** @suppress {duplicate } */
  var _glCheckFramebufferStatus = (x0) => GLctx.checkFramebufferStatus(x0);
  var _emscripten_glCheckFramebufferStatus = _glCheckFramebufferStatus;

  /** @suppress {duplicate } */
  var _glClear = (x0) => GLctx.clear(x0);
  var _emscripten_glClear = _glClear;

  /** @suppress {duplicate } */
  var _glClearColor = (x0, x1, x2, x3) => GLctx.clearColor(x0, x1, x2, x3);
  var _emscripten_glClearColor = _glClearColor;

  /** @suppress {duplicate } */
  var _glClearDepthf = (x0) => GLctx.clearDepth(x0);
  var _emscripten_glClearDepthf = _glClearDepthf;

  /** @suppress {duplicate } */
  var _glClearStencil = (x0) => GLctx.clearStencil(x0);
  var _emscripten_glClearStencil = _glClearStencil;

  /** @suppress {duplicate } */
  var _glClipControlEXT = (origin, depth) => {
      GLctx.extClipControl['clipControlEXT'](origin, depth);
    };
  var _emscripten_glClipControlEXT = _glClipControlEXT;

  /** @suppress {duplicate } */
  var _glColorMask = (red, green, blue, alpha) => {
      GLctx.colorMask(!!red, !!green, !!blue, !!alpha);
    };
  var _emscripten_glColorMask = _glColorMask;

  /** @suppress {duplicate } */
  var _glCompileShader = (shader) => {
      GLctx.compileShader(GL.shaders[shader]);
    };
  var _emscripten_glCompileShader = _glCompileShader;

  /** @suppress {duplicate } */
  var _glCompressedTexImage2D = (target, level, internalFormat, width, height, border, imageSize, data) => {
      // `data` may be null here, which means "allocate uniniitalized space but
      // don't upload" in GLES parlance, but `compressedTexImage2D` requires the
      // final data parameter, so we simply pass a heap view starting at zero
      // effectively uploading whatever happens to be near address zero.  See
      // https://github.com/emscripten-core/emscripten/issues/19300.
      GLctx.compressedTexImage2D(target, level, internalFormat, width, height, border, HEAPU8.subarray((data), data+imageSize));
    };
  var _emscripten_glCompressedTexImage2D = _glCompressedTexImage2D;

  /** @suppress {duplicate } */
  var _glCompressedTexSubImage2D = (target, level, xoffset, yoffset, width, height, format, imageSize, data) => {
      GLctx.compressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, HEAPU8.subarray((data), data+imageSize));
    };
  var _emscripten_glCompressedTexSubImage2D = _glCompressedTexSubImage2D;

  /** @suppress {duplicate } */
  var _glCopyTexImage2D = (x0, x1, x2, x3, x4, x5, x6, x7) => GLctx.copyTexImage2D(x0, x1, x2, x3, x4, x5, x6, x7);
  var _emscripten_glCopyTexImage2D = _glCopyTexImage2D;

  /** @suppress {duplicate } */
  var _glCopyTexSubImage2D = (x0, x1, x2, x3, x4, x5, x6, x7) => GLctx.copyTexSubImage2D(x0, x1, x2, x3, x4, x5, x6, x7);
  var _emscripten_glCopyTexSubImage2D = _glCopyTexSubImage2D;

  /** @suppress {duplicate } */
  var _glCreateProgram = () => {
      var id = GL.getNewId(GL.programs);
      var program = GLctx.createProgram();
      // Store additional information needed for each shader program:
      program.name = id;
      // Lazy cache results of
      // glGetProgramiv(GL_ACTIVE_UNIFORM_MAX_LENGTH/GL_ACTIVE_ATTRIBUTE_MAX_LENGTH/GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH)
      program.maxUniformLength = program.maxAttributeLength = program.maxUniformBlockNameLength = 0;
      program.uniformIdCounter = 1;
      GL.programs[id] = program;
      return id;
    };
  var _emscripten_glCreateProgram = _glCreateProgram;

  /** @suppress {duplicate } */
  var _glCreateShader = (shaderType) => {
      var id = GL.getNewId(GL.shaders);
      GL.shaders[id] = GLctx.createShader(shaderType);
  
      return id;
    };
  var _emscripten_glCreateShader = _glCreateShader;

  /** @suppress {duplicate } */
  var _glCullFace = (x0) => GLctx.cullFace(x0);
  var _emscripten_glCullFace = _glCullFace;

  /** @suppress {duplicate } */
  var _glDeleteBuffers = (n, buffers) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((buffers)+(i*4))>>2)];
        var buffer = GL.buffers[id];
  
        // From spec: "glDeleteBuffers silently ignores 0's and names that do not
        // correspond to existing buffer objects."
        if (!buffer) continue;
  
        GLctx.deleteBuffer(buffer);
        buffer.name = 0;
        GL.buffers[id] = null;
  
      }
    };
  var _emscripten_glDeleteBuffers = _glDeleteBuffers;

  /** @suppress {duplicate } */
  var _glDeleteFramebuffers = (n, framebuffers) => {
      for (var i = 0; i < n; ++i) {
        var id = HEAP32[(((framebuffers)+(i*4))>>2)];
        var framebuffer = GL.framebuffers[id];
        if (!framebuffer) continue; // GL spec: "glDeleteFramebuffers silently ignores 0s and names that do not correspond to existing framebuffer objects".
        GLctx.deleteFramebuffer(framebuffer);
        framebuffer.name = 0;
        GL.framebuffers[id] = null;
      }
    };
  var _emscripten_glDeleteFramebuffers = _glDeleteFramebuffers;

  /** @suppress {duplicate } */
  var _glDeleteProgram = (id) => {
      if (!id) return;
      var program = GL.programs[id];
      if (!program) {
        // glDeleteProgram actually signals an error when deleting a nonexisting
        // object, unlike some other GL delete functions.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      GLctx.deleteProgram(program);
      program.name = 0;
      GL.programs[id] = null;
    };
  var _emscripten_glDeleteProgram = _glDeleteProgram;

  /** @suppress {duplicate } */
  var _glDeleteQueriesEXT = (n, ids) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((ids)+(i*4))>>2)];
        var query = GL.queries[id];
        if (!query) continue; // GL spec: "unused names in ids are ignored, as is the name zero."
        GLctx.disjointTimerQueryExt['deleteQueryEXT'](query);
        GL.queries[id] = null;
      }
    };
  var _emscripten_glDeleteQueriesEXT = _glDeleteQueriesEXT;

  /** @suppress {duplicate } */
  var _glDeleteRenderbuffers = (n, renderbuffers) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((renderbuffers)+(i*4))>>2)];
        var renderbuffer = GL.renderbuffers[id];
        if (!renderbuffer) continue; // GL spec: "glDeleteRenderbuffers silently ignores 0s and names that do not correspond to existing renderbuffer objects".
        GLctx.deleteRenderbuffer(renderbuffer);
        renderbuffer.name = 0;
        GL.renderbuffers[id] = null;
      }
    };
  var _emscripten_glDeleteRenderbuffers = _glDeleteRenderbuffers;

  /** @suppress {duplicate } */
  var _glDeleteShader = (id) => {
      if (!id) return;
      var shader = GL.shaders[id];
      if (!shader) {
        // glDeleteShader actually signals an error when deleting a nonexisting
        // object, unlike some other GL delete functions.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      GLctx.deleteShader(shader);
      GL.shaders[id] = null;
    };
  var _emscripten_glDeleteShader = _glDeleteShader;

  /** @suppress {duplicate } */
  var _glDeleteTextures = (n, textures) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((textures)+(i*4))>>2)];
        var texture = GL.textures[id];
        // GL spec: "glDeleteTextures silently ignores 0s and names that do not
        // correspond to existing textures".
        if (!texture) continue;
        GLctx.deleteTexture(texture);
        texture.name = 0;
        GL.textures[id] = null;
      }
    };
  var _emscripten_glDeleteTextures = _glDeleteTextures;

  
  /** @suppress {duplicate } */
  var _glDeleteVertexArrays = (n, vaos) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((vaos)+(i*4))>>2)];
        GLctx.deleteVertexArray(GL.vaos[id]);
        GL.vaos[id] = null;
      }
    };
  /** @suppress {duplicate } */
  var _glDeleteVertexArraysOES = _glDeleteVertexArrays;
  var _emscripten_glDeleteVertexArraysOES = _glDeleteVertexArraysOES;

  /** @suppress {duplicate } */
  var _glDepthFunc = (x0) => GLctx.depthFunc(x0);
  var _emscripten_glDepthFunc = _glDepthFunc;

  /** @suppress {duplicate } */
  var _glDepthMask = (flag) => {
      GLctx.depthMask(!!flag);
    };
  var _emscripten_glDepthMask = _glDepthMask;

  /** @suppress {duplicate } */
  var _glDepthRangef = (x0, x1) => GLctx.depthRange(x0, x1);
  var _emscripten_glDepthRangef = _glDepthRangef;

  /** @suppress {duplicate } */
  var _glDetachShader = (program, shader) => {
      GLctx.detachShader(GL.programs[program], GL.shaders[shader]);
    };
  var _emscripten_glDetachShader = _glDetachShader;

  /** @suppress {duplicate } */
  var _glDisable = (x0) => GLctx.disable(x0);
  var _emscripten_glDisable = _glDisable;

  /** @suppress {duplicate } */
  var _glDisableVertexAttribArray = (index) => {
      GLctx.disableVertexAttribArray(index);
    };
  var _emscripten_glDisableVertexAttribArray = _glDisableVertexAttribArray;

  /** @suppress {duplicate } */
  var _glDrawArrays = (mode, first, count) => {
  
      GLctx.drawArrays(mode, first, count);
  
    };
  var _emscripten_glDrawArrays = _glDrawArrays;

  
  /** @suppress {duplicate } */
  var _glDrawArraysInstanced = (mode, first, count, primcount) => {
      GLctx.drawArraysInstanced(mode, first, count, primcount);
    };
  /** @suppress {duplicate } */
  var _glDrawArraysInstancedANGLE = _glDrawArraysInstanced;
  var _emscripten_glDrawArraysInstancedANGLE = _glDrawArraysInstancedANGLE;

  
  var tempFixedLengthArray = [];
  
  /** @suppress {duplicate } */
  var _glDrawBuffers = (n, bufs) => {
  
      var bufArray = tempFixedLengthArray[n];
      for (var i = 0; i < n; i++) {
        bufArray[i] = HEAP32[(((bufs)+(i*4))>>2)];
      }
  
      GLctx.drawBuffers(bufArray);
    };
  /** @suppress {duplicate } */
  var _glDrawBuffersWEBGL = _glDrawBuffers;
  var _emscripten_glDrawBuffersWEBGL = _glDrawBuffersWEBGL;

  /** @suppress {duplicate } */
  var _glDrawElements = (mode, count, type, indices) => {
  
      GLctx.drawElements(mode, count, type, indices);
  
    };
  var _emscripten_glDrawElements = _glDrawElements;

  
  /** @suppress {duplicate } */
  var _glDrawElementsInstanced = (mode, count, type, indices, primcount) => {
      GLctx.drawElementsInstanced(mode, count, type, indices, primcount);
    };
  /** @suppress {duplicate } */
  var _glDrawElementsInstancedANGLE = _glDrawElementsInstanced;
  var _emscripten_glDrawElementsInstancedANGLE = _glDrawElementsInstancedANGLE;

  /** @suppress {duplicate } */
  var _glEnable = (x0) => GLctx.enable(x0);
  var _emscripten_glEnable = _glEnable;

  /** @suppress {duplicate } */
  var _glEnableVertexAttribArray = (index) => {
      GLctx.enableVertexAttribArray(index);
    };
  var _emscripten_glEnableVertexAttribArray = _glEnableVertexAttribArray;

  /** @suppress {duplicate } */
  var _glEndQueryEXT = (target) => {
      GLctx.disjointTimerQueryExt['endQueryEXT'](target);
    };
  var _emscripten_glEndQueryEXT = _glEndQueryEXT;

  /** @suppress {duplicate } */
  var _glFinish = () => GLctx.finish();
  var _emscripten_glFinish = _glFinish;

  /** @suppress {duplicate } */
  var _glFlush = () => GLctx.flush();
  var _emscripten_glFlush = _glFlush;

  /** @suppress {duplicate } */
  var _glFramebufferRenderbuffer = (target, attachment, renderbuffertarget, renderbuffer) => {
      GLctx.framebufferRenderbuffer(target, attachment, renderbuffertarget,
                                         GL.renderbuffers[renderbuffer]);
    };
  var _emscripten_glFramebufferRenderbuffer = _glFramebufferRenderbuffer;

  /** @suppress {duplicate } */
  var _glFramebufferTexture2D = (target, attachment, textarget, texture, level) => {
      GLctx.framebufferTexture2D(target, attachment, textarget,
                                      GL.textures[texture], level);
    };
  var _emscripten_glFramebufferTexture2D = _glFramebufferTexture2D;

  /** @suppress {duplicate } */
  var _glFrontFace = (x0) => GLctx.frontFace(x0);
  var _emscripten_glFrontFace = _glFrontFace;

  /** @suppress {duplicate } */
  var _glGenBuffers = (n, buffers) => {
      GL.genObject(n, buffers, 'createBuffer', GL.buffers
        );
    };
  var _emscripten_glGenBuffers = _glGenBuffers;

  /** @suppress {duplicate } */
  var _glGenFramebuffers = (n, ids) => {
      GL.genObject(n, ids, 'createFramebuffer', GL.framebuffers
        );
    };
  var _emscripten_glGenFramebuffers = _glGenFramebuffers;

  /** @suppress {duplicate } */
  var _glGenQueriesEXT = (n, ids) => {
      for (var i = 0; i < n; i++) {
        var query = GLctx.disjointTimerQueryExt['createQueryEXT']();
        if (!query) {
          GL.recordError(0x502 /* GL_INVALID_OPERATION */);
          while (i < n) HEAP32[(((ids)+(i++*4))>>2)] = 0;
          return;
        }
        var id = GL.getNewId(GL.queries);
        query.name = id;
        GL.queries[id] = query;
        HEAP32[(((ids)+(i*4))>>2)] = id;
      }
    };
  var _emscripten_glGenQueriesEXT = _glGenQueriesEXT;

  /** @suppress {duplicate } */
  var _glGenRenderbuffers = (n, renderbuffers) => {
      GL.genObject(n, renderbuffers, 'createRenderbuffer', GL.renderbuffers
        );
    };
  var _emscripten_glGenRenderbuffers = _glGenRenderbuffers;

  /** @suppress {duplicate } */
  var _glGenTextures = (n, textures) => {
      GL.genObject(n, textures, 'createTexture', GL.textures
        );
    };
  var _emscripten_glGenTextures = _glGenTextures;

  
  /** @suppress {duplicate } */
  var _glGenVertexArrays = (n, arrays) => {
      GL.genObject(n, arrays, 'createVertexArray', GL.vaos
        );
    };
  /** @suppress {duplicate } */
  var _glGenVertexArraysOES = _glGenVertexArrays;
  var _emscripten_glGenVertexArraysOES = _glGenVertexArraysOES;

  /** @suppress {duplicate } */
  var _glGenerateMipmap = (x0) => GLctx.generateMipmap(x0);
  var _emscripten_glGenerateMipmap = _glGenerateMipmap;

  
  var __glGetActiveAttribOrUniform = (funcName, program, index, bufSize, length, size, type, name) => {
      program = GL.programs[program];
      var info = GLctx[funcName](program, index);
      if (info) {
        // If an error occurs, nothing will be written to length, size and type and name.
        var numBytesWrittenExclNull = name && stringToUTF8(info.name, name, bufSize);
        if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
        if (size) HEAP32[((size)>>2)] = info.size;
        if (type) HEAP32[((type)>>2)] = info.type;
      }
    };
  
  /** @suppress {duplicate } */
  var _glGetActiveAttrib = (program, index, bufSize, length, size, type, name) =>
      __glGetActiveAttribOrUniform('getActiveAttrib', program, index, bufSize, length, size, type, name);
  var _emscripten_glGetActiveAttrib = _glGetActiveAttrib;

  
  /** @suppress {duplicate } */
  var _glGetActiveUniform = (program, index, bufSize, length, size, type, name) =>
      __glGetActiveAttribOrUniform('getActiveUniform', program, index, bufSize, length, size, type, name);
  var _emscripten_glGetActiveUniform = _glGetActiveUniform;

  /** @suppress {duplicate } */
  var _glGetAttachedShaders = (program, maxCount, count, shaders) => {
      var result = GLctx.getAttachedShaders(GL.programs[program]);
      var len = result.length;
      if (len > maxCount) {
        len = maxCount;
      }
      HEAP32[((count)>>2)] = len;
      for (var i = 0; i < len; ++i) {
        var id = GL.shaders.indexOf(result[i]);
        HEAP32[(((shaders)+(i*4))>>2)] = id;
      }
    };
  var _emscripten_glGetAttachedShaders = _glGetAttachedShaders;

  
  /** @suppress {duplicate } */
  var _glGetAttribLocation = (program, name) =>
      GLctx.getAttribLocation(GL.programs[program], UTF8ToString(name));
  var _emscripten_glGetAttribLocation = _glGetAttribLocation;

  var readI53FromI64 = (ptr) => {
      return HEAPU32[((ptr)>>2)] + HEAP32[(((ptr)+(4))>>2)] * 4294967296;
    };
  
  var readI53FromU64 = (ptr) => {
      return HEAPU32[((ptr)>>2)] + HEAPU32[(((ptr)+(4))>>2)] * 4294967296;
    };
  var writeI53ToI64 = (ptr, num) => {
      HEAPU32[((ptr)>>2)] = num;
      var lower = HEAPU32[((ptr)>>2)];
      HEAPU32[(((ptr)+(4))>>2)] = (num - lower)/4294967296;
      var deserialized = (num >= 0) ? readI53FromU64(ptr) : readI53FromI64(ptr);
      var offset = ((ptr)>>2);
      if (deserialized != num) warnOnce(`writeI53ToI64() out of range: serialized JS Number ${num} to Wasm heap as bytes lo=${ptrToString(HEAPU32[offset])}, hi=${ptrToString(HEAPU32[offset+1])}, which deserializes back to ${deserialized} instead!`);
    };
  
  var emscriptenWebGLGet = (name_, p, type) => {
      // Guard against user passing a null pointer.
      // Note that GLES2 spec does not say anything about how passing a null
      // pointer should be treated.  Testing on desktop core GL 3, the application
      // crashes on glGetIntegerv to a null pointer, but better to report an error
      // instead of doing anything random.
      if (!p) {
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      var ret = undefined;
      switch (name_) { // Handle a few trivial GLES values
        case 0x8DFA: // GL_SHADER_COMPILER
          ret = 1;
          break;
        case 0x8DF8: // GL_SHADER_BINARY_FORMATS
          if (type != 0 && type != 1) {
            GL.recordError(0x500); // GL_INVALID_ENUM
          }
          // Do not write anything to the out pointer, since no binary formats are
          // supported.
          return;
        case 0x8DF9: // GL_NUM_SHADER_BINARY_FORMATS
          ret = 0;
          break;
        case 0x86A2: // GL_NUM_COMPRESSED_TEXTURE_FORMATS
          // WebGL doesn't have GL_NUM_COMPRESSED_TEXTURE_FORMATS (it's obsolete
          // since GL_COMPRESSED_TEXTURE_FORMATS returns a JS array that can be
          // queried for length), so implement it ourselves to allow C++ GLES2
          // code get the length.
          var formats = GLctx.getParameter(0x86A3 /*GL_COMPRESSED_TEXTURE_FORMATS*/);
          ret = formats ? formats.length : 0;
          break;
  
      }
  
      if (ret === undefined) {
        var result = GLctx.getParameter(name_);
        switch (typeof result) {
          case "number":
            ret = result;
            break;
          case "boolean":
            ret = result ? 1 : 0;
            break;
          case "string":
            GL.recordError(0x500); // GL_INVALID_ENUM
            return;
          case "object":
            if (result === null) {
              // null is a valid result for some (e.g., which buffer is bound -
              // perhaps nothing is bound), but otherwise can mean an invalid
              // name_, which we need to report as an error
              switch (name_) {
                case 0x8894: // ARRAY_BUFFER_BINDING
                case 0x8B8D: // CURRENT_PROGRAM
                case 0x8895: // ELEMENT_ARRAY_BUFFER_BINDING
                case 0x8CA6: // FRAMEBUFFER_BINDING or DRAW_FRAMEBUFFER_BINDING
                case 0x8CA7: // RENDERBUFFER_BINDING
                case 0x8069: // TEXTURE_BINDING_2D
                case 0x85B5: // WebGL 2 GL_VERTEX_ARRAY_BINDING, or WebGL 1 extension OES_vertex_array_object GL_VERTEX_ARRAY_BINDING_OES
                case 0x8514: { // TEXTURE_BINDING_CUBE_MAP
                  ret = 0;
                  break;
                }
                default: {
                  GL.recordError(0x500); // GL_INVALID_ENUM
                  return;
                }
              }
            } else if (result instanceof Float32Array ||
                       result instanceof Uint32Array ||
                       result instanceof Int32Array ||
                       result instanceof Array) {
              for (var i = 0; i < result.length; ++i) {
                switch (type) {
                  case 0: HEAP32[(((p)+(i*4))>>2)] = result[i]; break;
                  case 2: HEAPF32[(((p)+(i*4))>>2)] = result[i]; break;
                  case 4: HEAP8[(p)+(i)] = result[i] ? 1 : 0; break;
                }
              }
              return;
            } else {
              try {
                ret = result.name | 0;
              } catch(e) {
                GL.recordError(0x500); // GL_INVALID_ENUM
                err(`GL_INVALID_ENUM in glGet${type}v: Unknown object returned from WebGL getParameter(${name_})! (error: ${e})`);
                return;
              }
            }
            break;
          default:
            GL.recordError(0x500); // GL_INVALID_ENUM
            err(`GL_INVALID_ENUM in glGet${type}v: Native code calling glGet${type}v(${name_}) and it returns ${result} of type ${typeof(result)}!`);
            return;
        }
      }
  
      switch (type) {
        case 1: writeI53ToI64(p, ret); break;
        case 0: HEAP32[((p)>>2)] = ret; break;
        case 2:   HEAPF32[((p)>>2)] = ret; break;
        case 4: HEAP8[p] = ret ? 1 : 0; break;
      }
    };
  
  /** @suppress {duplicate } */
  var _glGetBooleanv = (name_, p) => emscriptenWebGLGet(name_, p, 4);
  var _emscripten_glGetBooleanv = _glGetBooleanv;

  /** @suppress {duplicate } */
  var _glGetBufferParameteriv = (target, value, data) => {
      if (!data) {
        // GLES2 specification does not specify how to behave if data is a null
        // pointer. Since calling this function does not make sense if data ==
        // null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      HEAP32[((data)>>2)] = GLctx.getBufferParameter(target, value);
    };
  var _emscripten_glGetBufferParameteriv = _glGetBufferParameteriv;

  /** @suppress {duplicate } */
  var _glGetError = () => {
      var error = GLctx.getError() || GL.lastError;
      GL.lastError = 0/*GL_NO_ERROR*/;
      return error;
    };
  var _emscripten_glGetError = _glGetError;

  
  /** @suppress {duplicate } */
  var _glGetFloatv = (name_, p) => emscriptenWebGLGet(name_, p, 2);
  var _emscripten_glGetFloatv = _glGetFloatv;

  /** @suppress {duplicate } */
  var _glGetFramebufferAttachmentParameteriv = (target, attachment, pname, params) => {
      var result = GLctx.getFramebufferAttachmentParameter(target, attachment, pname);
      if (result instanceof WebGLRenderbuffer ||
          result instanceof WebGLTexture) {
        result = result.name | 0;
      }
      HEAP32[((params)>>2)] = result;
    };
  var _emscripten_glGetFramebufferAttachmentParameteriv = _glGetFramebufferAttachmentParameteriv;

  
  /** @suppress {duplicate } */
  var _glGetIntegerv = (name_, p) => emscriptenWebGLGet(name_, p, 0);
  var _emscripten_glGetIntegerv = _glGetIntegerv;

  /** @suppress {duplicate } */
  var _glGetProgramInfoLog = (program, maxLength, length, infoLog) => {
      var log = GLctx.getProgramInfoLog(GL.programs[program]);
      if (log === null) log = '(unknown error)';
      var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    };
  var _emscripten_glGetProgramInfoLog = _glGetProgramInfoLog;

  /** @suppress {duplicate } */
  var _glGetProgramiv = (program, pname, p) => {
      if (!p) {
        // GLES2 specification does not specify how to behave if p is a null
        // pointer. Since calling this function does not make sense if p == null,
        // issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
  
      if (program >= GL.counter) {
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
  
      program = GL.programs[program];
  
      if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
        var log = GLctx.getProgramInfoLog(program);
        if (log === null) log = '(unknown error)';
        HEAP32[((p)>>2)] = log.length + 1;
      } else if (pname == 0x8B87 /* GL_ACTIVE_UNIFORM_MAX_LENGTH */) {
        if (!program.maxUniformLength) {
          var numActiveUniforms = GLctx.getProgramParameter(program, 0x8B86/*GL_ACTIVE_UNIFORMS*/);
          for (var i = 0; i < numActiveUniforms; ++i) {
            program.maxUniformLength = Math.max(program.maxUniformLength, GLctx.getActiveUniform(program, i).name.length+1);
          }
        }
        HEAP32[((p)>>2)] = program.maxUniformLength;
      } else if (pname == 0x8B8A /* GL_ACTIVE_ATTRIBUTE_MAX_LENGTH */) {
        if (!program.maxAttributeLength) {
          var numActiveAttributes = GLctx.getProgramParameter(program, 0x8B89/*GL_ACTIVE_ATTRIBUTES*/);
          for (var i = 0; i < numActiveAttributes; ++i) {
            program.maxAttributeLength = Math.max(program.maxAttributeLength, GLctx.getActiveAttrib(program, i).name.length+1);
          }
        }
        HEAP32[((p)>>2)] = program.maxAttributeLength;
      } else if (pname == 0x8A35 /* GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH */) {
        if (!program.maxUniformBlockNameLength) {
          var numActiveUniformBlocks = GLctx.getProgramParameter(program, 0x8A36/*GL_ACTIVE_UNIFORM_BLOCKS*/);
          for (var i = 0; i < numActiveUniformBlocks; ++i) {
            program.maxUniformBlockNameLength = Math.max(program.maxUniformBlockNameLength, GLctx.getActiveUniformBlockName(program, i).length+1);
          }
        }
        HEAP32[((p)>>2)] = program.maxUniformBlockNameLength;
      } else {
        HEAP32[((p)>>2)] = GLctx.getProgramParameter(program, pname);
      }
    };
  var _emscripten_glGetProgramiv = _glGetProgramiv;

  
  /** @suppress {duplicate } */
  var _glGetQueryObjecti64vEXT = (id, pname, params) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
        // if p == null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      var query = GL.queries[id];
      var param;
      {
        param = GLctx.disjointTimerQueryExt['getQueryObjectEXT'](query, pname);
      }
      var ret;
      if (typeof param == 'boolean') {
        ret = param ? 1 : 0;
      } else {
        ret = param;
      }
      writeI53ToI64(params, ret);
    };
  var _emscripten_glGetQueryObjecti64vEXT = _glGetQueryObjecti64vEXT;

  /** @suppress {duplicate } */
  var _glGetQueryObjectivEXT = (id, pname, params) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
        // if p == null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      var query = GL.queries[id];
      var param = GLctx.disjointTimerQueryExt['getQueryObjectEXT'](query, pname);
      var ret;
      if (typeof param == 'boolean') {
        ret = param ? 1 : 0;
      } else {
        ret = param;
      }
      HEAP32[((params)>>2)] = ret;
    };
  var _emscripten_glGetQueryObjectivEXT = _glGetQueryObjectivEXT;

  
  /** @suppress {duplicate } */
  var _glGetQueryObjectui64vEXT = _glGetQueryObjecti64vEXT;
  var _emscripten_glGetQueryObjectui64vEXT = _glGetQueryObjectui64vEXT;

  
  /** @suppress {duplicate } */
  var _glGetQueryObjectuivEXT = _glGetQueryObjectivEXT;
  var _emscripten_glGetQueryObjectuivEXT = _glGetQueryObjectuivEXT;

  /** @suppress {duplicate } */
  var _glGetQueryivEXT = (target, pname, params) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
        // if p == null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      HEAP32[((params)>>2)] = GLctx.disjointTimerQueryExt['getQueryEXT'](target, pname);
    };
  var _emscripten_glGetQueryivEXT = _glGetQueryivEXT;

  /** @suppress {duplicate } */
  var _glGetRenderbufferParameteriv = (target, pname, params) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
        // if params == null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      HEAP32[((params)>>2)] = GLctx.getRenderbufferParameter(target, pname);
    };
  var _emscripten_glGetRenderbufferParameteriv = _glGetRenderbufferParameteriv;

  
  /** @suppress {duplicate } */
  var _glGetShaderInfoLog = (shader, maxLength, length, infoLog) => {
      var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
      if (log === null) log = '(unknown error)';
      var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    };
  var _emscripten_glGetShaderInfoLog = _glGetShaderInfoLog;

  /** @suppress {duplicate } */
  var _glGetShaderPrecisionFormat = (shaderType, precisionType, range, precision) => {
      var result = GLctx.getShaderPrecisionFormat(shaderType, precisionType);
      HEAP32[((range)>>2)] = result.rangeMin;
      HEAP32[(((range)+(4))>>2)] = result.rangeMax;
      HEAP32[((precision)>>2)] = result.precision;
    };
  var _emscripten_glGetShaderPrecisionFormat = _glGetShaderPrecisionFormat;

  /** @suppress {duplicate } */
  var _glGetShaderSource = (shader, bufSize, length, source) => {
      var result = GLctx.getShaderSource(GL.shaders[shader]);
      if (!result) return; // If an error occurs, nothing will be written to length or source.
      var numBytesWrittenExclNull = (bufSize > 0 && source) ? stringToUTF8(result, source, bufSize) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    };
  var _emscripten_glGetShaderSource = _glGetShaderSource;

  /** @suppress {duplicate } */
  var _glGetShaderiv = (shader, pname, p) => {
      if (!p) {
        // GLES2 specification does not specify how to behave if p is a null
        // pointer. Since calling this function does not make sense if p == null,
        // issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
        var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
        if (log === null) log = '(unknown error)';
        // The GLES2 specification says that if the shader has an empty info log,
        // a value of 0 is returned. Otherwise the log has a null char appended.
        // (An empty string is falsey, so we can just check that instead of
        // looking at log.length.)
        var logLength = log ? log.length + 1 : 0;
        HEAP32[((p)>>2)] = logLength;
      } else if (pname == 0x8B88) { // GL_SHADER_SOURCE_LENGTH
        var source = GLctx.getShaderSource(GL.shaders[shader]);
        // source may be a null, or the empty string, both of which are falsey
        // values that we report a 0 length for.
        var sourceLength = source ? source.length + 1 : 0;
        HEAP32[((p)>>2)] = sourceLength;
      } else {
        HEAP32[((p)>>2)] = GLctx.getShaderParameter(GL.shaders[shader], pname);
      }
    };
  var _emscripten_glGetShaderiv = _glGetShaderiv;

  
  
  var stringToNewUTF8 = (str) => {
      var size = lengthBytesUTF8(str) + 1;
      var ret = _malloc(size);
      if (ret) stringToUTF8(str, ret, size);
      return ret;
    };
  
  
  var webglGetExtensions = () => {
      var exts = getEmscriptenSupportedExtensions(GLctx);
      exts = exts.concat(exts.map((e) => "GL_" + e));
      return exts;
    };
  
  /** @suppress {duplicate } */
  var _glGetString = (name_) => {
      var ret = GL.stringCache[name_];
      if (!ret) {
        switch (name_) {
          case 0x1F03 /* GL_EXTENSIONS */:
            ret = stringToNewUTF8(webglGetExtensions().join(' '));
            break;
          case 0x1F00 /* GL_VENDOR */:
          case 0x1F01 /* GL_RENDERER */:
          case 0x9245 /* UNMASKED_VENDOR_WEBGL */:
          case 0x9246 /* UNMASKED_RENDERER_WEBGL */:
            var s = GLctx.getParameter(name_);
            if (!s) {
              GL.recordError(0x500/*GL_INVALID_ENUM*/);
            }
            ret = s ? stringToNewUTF8(s) : 0;
            break;
  
          case 0x1F02 /* GL_VERSION */:
            var webGLVersion = GLctx.getParameter(0x1F02 /*GL_VERSION*/);
            // return GLES version string corresponding to the version of the WebGL context
            var glVersion = `OpenGL ES 2.0 (${webGLVersion})`;
            ret = stringToNewUTF8(glVersion);
            break;
          case 0x8B8C /* GL_SHADING_LANGUAGE_VERSION */:
            var glslVersion = GLctx.getParameter(0x8B8C /*GL_SHADING_LANGUAGE_VERSION*/);
            // extract the version number 'N.M' from the string 'WebGL GLSL ES N.M ...'
            var ver_re = /^WebGL GLSL ES ([0-9]\.[0-9][0-9]?)(?:$| .*)/;
            var ver_num = glslVersion.match(ver_re);
            if (ver_num !== null) {
              if (ver_num[1].length == 3) ver_num[1] = ver_num[1] + '0'; // ensure minor version has 2 digits
              glslVersion = `OpenGL ES GLSL ES ${ver_num[1]} (${glslVersion})`;
            }
            ret = stringToNewUTF8(glslVersion);
            break;
          default:
            GL.recordError(0x500/*GL_INVALID_ENUM*/);
            // fall through
        }
        GL.stringCache[name_] = ret;
      }
      return ret;
    };
  var _emscripten_glGetString = _glGetString;

  /** @suppress {duplicate } */
  var _glGetTexParameterfv = (target, pname, params) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null
        // pointer. Since calling this function does not make sense if p == null,
        // issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      HEAPF32[((params)>>2)] = GLctx.getTexParameter(target, pname);
    };
  var _emscripten_glGetTexParameterfv = _glGetTexParameterfv;

  /** @suppress {duplicate } */
  var _glGetTexParameteriv = (target, pname, params) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null
        // pointer. Since calling this function does not make sense if p == null,
        // issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      HEAP32[((params)>>2)] = GLctx.getTexParameter(target, pname);
    };
  var _emscripten_glGetTexParameteriv = _glGetTexParameteriv;

  /** @suppress {checkTypes} */
  var jstoi_q = (str) => parseInt(str);
  
  /** @noinline */
  var webglGetLeftBracePos = (name) => name.slice(-1) == ']' && name.lastIndexOf('[');
  
  var webglPrepareUniformLocationsBeforeFirstUse = (program) => {
      var uniformLocsById = program.uniformLocsById, // Maps GLuint -> WebGLUniformLocation
        uniformSizeAndIdsByName = program.uniformSizeAndIdsByName, // Maps name -> [uniform array length, GLuint]
        i, j;
  
      // On the first time invocation of glGetUniformLocation on this shader program:
      // initialize cache data structures and discover which uniforms are arrays.
      if (!uniformLocsById) {
        // maps GLint integer locations to WebGLUniformLocations
        program.uniformLocsById = uniformLocsById = {};
        // maps integer locations back to uniform name strings, so that we can lazily fetch uniform array locations
        program.uniformArrayNamesById = {};
  
        var numActiveUniforms = GLctx.getProgramParameter(program, 0x8B86/*GL_ACTIVE_UNIFORMS*/);
        for (i = 0; i < numActiveUniforms; ++i) {
          var u = GLctx.getActiveUniform(program, i);
          var nm = u.name;
          var sz = u.size;
          var lb = webglGetLeftBracePos(nm);
          var arrayName = lb > 0 ? nm.slice(0, lb) : nm;
  
          // Assign a new location.
          var id = program.uniformIdCounter;
          program.uniformIdCounter += sz;
          // Eagerly get the location of the uniformArray[0] base element.
          // The remaining indices >0 will be left for lazy evaluation to
          // improve performance. Those may never be needed to fetch, if the
          // application fills arrays always in full starting from the first
          // element of the array.
          uniformSizeAndIdsByName[arrayName] = [sz, id];
  
          // Store placeholder integers in place that highlight that these
          // >0 index locations are array indices pending population.
          for (j = 0; j < sz; ++j) {
            uniformLocsById[id] = j;
            program.uniformArrayNamesById[id++] = arrayName;
          }
        }
      }
    };
  
  
  
  /** @suppress {duplicate } */
  var _glGetUniformLocation = (program, name) => {
  
      name = UTF8ToString(name);
  
      if (program = GL.programs[program]) {
        webglPrepareUniformLocationsBeforeFirstUse(program);
        var uniformLocsById = program.uniformLocsById; // Maps GLuint -> WebGLUniformLocation
        var arrayIndex = 0;
        var uniformBaseName = name;
  
        // Invariant: when populating integer IDs for uniform locations, we must
        // maintain the precondition that arrays reside in contiguous addresses,
        // i.e. for a 'vec4 colors[10];', colors[4] must be at location
        // colors[0]+4.  However, user might call glGetUniformLocation(program,
        // "colors") for an array, so we cannot discover based on the user input
        // arguments whether the uniform we are dealing with is an array. The only
        // way to discover which uniforms are arrays is to enumerate over all the
        // active uniforms in the program.
        var leftBrace = webglGetLeftBracePos(name);
  
        // If user passed an array accessor "[index]", parse the array index off the accessor.
        if (leftBrace > 0) {
          arrayIndex = jstoi_q(name.slice(leftBrace + 1)) >>> 0; // "index]", coerce parseInt(']') with >>>0 to treat "foo[]" as "foo[0]" and foo[-1] as unsigned out-of-bounds.
          uniformBaseName = name.slice(0, leftBrace);
        }
  
        // Have we cached the location of this uniform before?
        // A pair [array length, GLint of the uniform location]
        var sizeAndId = program.uniformSizeAndIdsByName[uniformBaseName];
  
        // If an uniform with this name exists, and if its index is within the
        // array limits (if it's even an array), query the WebGLlocation, or
        // return an existing cached location.
        if (sizeAndId && arrayIndex < sizeAndId[0]) {
          arrayIndex += sizeAndId[1]; // Add the base location of the uniform to the array index offset.
          if ((uniformLocsById[arrayIndex] = uniformLocsById[arrayIndex] || GLctx.getUniformLocation(program, name))) {
            return arrayIndex;
          }
        }
      }
      else {
        // N.b. we are currently unable to distinguish between GL program IDs that
        // never existed vs GL program IDs that have been deleted, so report
        // GL_INVALID_VALUE in both cases.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
      }
      return -1;
    };
  var _emscripten_glGetUniformLocation = _glGetUniformLocation;

  var webglGetUniformLocation = (location) => {
      var p = GLctx.currentProgram;
  
      if (p) {
        var webglLoc = p.uniformLocsById[location];
        // p.uniformLocsById[location] stores either an integer, or a
        // WebGLUniformLocation.
        // If an integer, we have not yet bound the location, so do it now. The
        // integer value specifies the array index we should bind to.
        if (typeof webglLoc == 'number') {
          p.uniformLocsById[location] = webglLoc = GLctx.getUniformLocation(p, p.uniformArrayNamesById[location] + (webglLoc > 0 ? `[${webglLoc}]` : ''));
        }
        // Else an already cached WebGLUniformLocation, return it.
        return webglLoc;
      } else {
        GL.recordError(0x502/*GL_INVALID_OPERATION*/);
      }
    };
  
  
  /** @suppress{checkTypes} */
  var emscriptenWebGLGetUniform = (program, location, params, type) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null
        // pointer. Since calling this function does not make sense if params ==
        // null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      program = GL.programs[program];
      webglPrepareUniformLocationsBeforeFirstUse(program);
      var data = GLctx.getUniform(program, webglGetUniformLocation(location));
      if (typeof data == 'number' || typeof data == 'boolean') {
        switch (type) {
          case 0: HEAP32[((params)>>2)] = data; break;
          case 2: HEAPF32[((params)>>2)] = data; break;
        }
      } else {
        for (var i = 0; i < data.length; i++) {
          switch (type) {
            case 0: HEAP32[(((params)+(i*4))>>2)] = data[i]; break;
            case 2: HEAPF32[(((params)+(i*4))>>2)] = data[i]; break;
          }
        }
      }
    };
  
  /** @suppress {duplicate } */
  var _glGetUniformfv = (program, location, params) => {
      emscriptenWebGLGetUniform(program, location, params, 2);
    };
  var _emscripten_glGetUniformfv = _glGetUniformfv;

  
  /** @suppress {duplicate } */
  var _glGetUniformiv = (program, location, params) => {
      emscriptenWebGLGetUniform(program, location, params, 0);
    };
  var _emscripten_glGetUniformiv = _glGetUniformiv;

  /** @suppress {duplicate } */
  var _glGetVertexAttribPointerv = (index, pname, pointer) => {
      if (!pointer) {
        // GLES2 specification does not specify how to behave if pointer is a null
        // pointer. Since calling this function does not make sense if pointer ==
        // null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      HEAP32[((pointer)>>2)] = GLctx.getVertexAttribOffset(index, pname);
    };
  var _emscripten_glGetVertexAttribPointerv = _glGetVertexAttribPointerv;

  /** @suppress{checkTypes} */
  var emscriptenWebGLGetVertexAttrib = (index, pname, params, type) => {
      if (!params) {
        // GLES2 specification does not specify how to behave if params is a null
        // pointer. Since calling this function does not make sense if params ==
        // null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      var data = GLctx.getVertexAttrib(index, pname);
      if (pname == 0x889F/*VERTEX_ATTRIB_ARRAY_BUFFER_BINDING*/) {
        HEAP32[((params)>>2)] = data && data["name"];
      } else if (typeof data == 'number' || typeof data == 'boolean') {
        switch (type) {
          case 0: HEAP32[((params)>>2)] = data; break;
          case 2: HEAPF32[((params)>>2)] = data; break;
          case 5: HEAP32[((params)>>2)] = Math.fround(data); break;
        }
      } else {
        for (var i = 0; i < data.length; i++) {
          switch (type) {
            case 0: HEAP32[(((params)+(i*4))>>2)] = data[i]; break;
            case 2: HEAPF32[(((params)+(i*4))>>2)] = data[i]; break;
            case 5: HEAP32[(((params)+(i*4))>>2)] = Math.fround(data[i]); break;
          }
        }
      }
    };
  
  /** @suppress {duplicate } */
  var _glGetVertexAttribfv = (index, pname, params) => {
      // N.B. This function may only be called if the vertex attribute was
      // specified using the function glVertexAttrib*f(), otherwise the results
      // are undefined. (GLES3 spec 6.1.12)
      emscriptenWebGLGetVertexAttrib(index, pname, params, 2);
    };
  var _emscripten_glGetVertexAttribfv = _glGetVertexAttribfv;

  
  /** @suppress {duplicate } */
  var _glGetVertexAttribiv = (index, pname, params) => {
      // N.B. This function may only be called if the vertex attribute was
      // specified using the function glVertexAttrib*f(), otherwise the results
      // are undefined. (GLES3 spec 6.1.12)
      emscriptenWebGLGetVertexAttrib(index, pname, params, 5);
    };
  var _emscripten_glGetVertexAttribiv = _glGetVertexAttribiv;

  /** @suppress {duplicate } */
  var _glHint = (x0, x1) => GLctx.hint(x0, x1);
  var _emscripten_glHint = _glHint;

  /** @suppress {duplicate } */
  var _glIsBuffer = (buffer) => {
      var b = GL.buffers[buffer];
      if (!b) return 0;
      return GLctx.isBuffer(b);
    };
  var _emscripten_glIsBuffer = _glIsBuffer;

  /** @suppress {duplicate } */
  var _glIsEnabled = (x0) => GLctx.isEnabled(x0);
  var _emscripten_glIsEnabled = _glIsEnabled;

  /** @suppress {duplicate } */
  var _glIsFramebuffer = (framebuffer) => {
      var fb = GL.framebuffers[framebuffer];
      if (!fb) return 0;
      return GLctx.isFramebuffer(fb);
    };
  var _emscripten_glIsFramebuffer = _glIsFramebuffer;

  /** @suppress {duplicate } */
  var _glIsProgram = (program) => {
      program = GL.programs[program];
      if (!program) return 0;
      return GLctx.isProgram(program);
    };
  var _emscripten_glIsProgram = _glIsProgram;

  /** @suppress {duplicate } */
  var _glIsQueryEXT = (id) => {
      var query = GL.queries[id];
      if (!query) return 0;
      return GLctx.disjointTimerQueryExt['isQueryEXT'](query);
    };
  var _emscripten_glIsQueryEXT = _glIsQueryEXT;

  /** @suppress {duplicate } */
  var _glIsRenderbuffer = (renderbuffer) => {
      var rb = GL.renderbuffers[renderbuffer];
      if (!rb) return 0;
      return GLctx.isRenderbuffer(rb);
    };
  var _emscripten_glIsRenderbuffer = _glIsRenderbuffer;

  /** @suppress {duplicate } */
  var _glIsShader = (shader) => {
      var s = GL.shaders[shader];
      if (!s) return 0;
      return GLctx.isShader(s);
    };
  var _emscripten_glIsShader = _glIsShader;

  /** @suppress {duplicate } */
  var _glIsTexture = (id) => {
      var texture = GL.textures[id];
      if (!texture) return 0;
      return GLctx.isTexture(texture);
    };
  var _emscripten_glIsTexture = _glIsTexture;

  
  /** @suppress {duplicate } */
  var _glIsVertexArray = (array) => {
  
      var vao = GL.vaos[array];
      if (!vao) return 0;
      return GLctx.isVertexArray(vao);
    };
  /** @suppress {duplicate } */
  var _glIsVertexArrayOES = _glIsVertexArray;
  var _emscripten_glIsVertexArrayOES = _glIsVertexArrayOES;

  /** @suppress {duplicate } */
  var _glLineWidth = (x0) => GLctx.lineWidth(x0);
  var _emscripten_glLineWidth = _glLineWidth;

  /** @suppress {duplicate } */
  var _glLinkProgram = (program) => {
      program = GL.programs[program];
      GLctx.linkProgram(program);
      // Invalidate earlier computed uniform->ID mappings, those have now become stale
      program.uniformLocsById = 0; // Mark as null-like so that glGetUniformLocation() knows to populate this again.
      program.uniformSizeAndIdsByName = {};
  
    };
  var _emscripten_glLinkProgram = _glLinkProgram;

  /** @suppress {duplicate } */
  var _glPixelStorei = (pname, param) => {
      if (pname == 3317) {
        GL.unpackAlignment = param;
      } else if (pname == 3314) {
        GL.unpackRowLength = param;
      }
      GLctx.pixelStorei(pname, param);
    };
  var _emscripten_glPixelStorei = _glPixelStorei;

  /** @suppress {duplicate } */
  var _glPolygonModeWEBGL = (face, mode) => {
      GLctx.webglPolygonMode['polygonModeWEBGL'](face, mode);
    };
  var _emscripten_glPolygonModeWEBGL = _glPolygonModeWEBGL;

  /** @suppress {duplicate } */
  var _glPolygonOffset = (x0, x1) => GLctx.polygonOffset(x0, x1);
  var _emscripten_glPolygonOffset = _glPolygonOffset;

  /** @suppress {duplicate } */
  var _glPolygonOffsetClampEXT = (factor, units, clamp) => {
      GLctx.extPolygonOffsetClamp['polygonOffsetClampEXT'](factor, units, clamp);
    };
  var _emscripten_glPolygonOffsetClampEXT = _glPolygonOffsetClampEXT;

  /** @suppress {duplicate } */
  var _glQueryCounterEXT = (id, target) => {
      GLctx.disjointTimerQueryExt['queryCounterEXT'](GL.queries[id], target);
    };
  var _emscripten_glQueryCounterEXT = _glQueryCounterEXT;

  var computeUnpackAlignedImageSize = (width, height, sizePerPixel) => {
      function roundedToNextMultipleOf(x, y) {
        return (x + y - 1) & -y;
      }
      var plainRowSize = (GL.unpackRowLength || width) * sizePerPixel;
      var alignedRowSize = roundedToNextMultipleOf(plainRowSize, GL.unpackAlignment);
      return height * alignedRowSize;
    };
  
  var colorChannelsInGlTextureFormat = (format) => {
      // Micro-optimizations for size: map format to size by subtracting smallest
      // enum value (0x1902) from all values first.  Also omit the most common
      // size value (1) from the list, which is assumed by formats not on the
      // list.
      var colorChannels = {
        // 0x1902 /* GL_DEPTH_COMPONENT */ - 0x1902: 1,
        // 0x1906 /* GL_ALPHA */ - 0x1902: 1,
        5: 3,
        6: 4,
        // 0x1909 /* GL_LUMINANCE */ - 0x1902: 1,
        8: 2,
        29502: 3,
        29504: 4,
      };
      return colorChannels[format - 0x1902]||1;
    };
  
  var heapObjectForWebGLType = (type) => {
      // Micro-optimization for size: Subtract lowest GL enum number (0x1400/* GL_BYTE */) from type to compare
      // smaller values for the heap, for shorter generated code size.
      // Also the type HEAPU16 is not tested for explicitly, but any unrecognized type will return out HEAPU16.
      // (since most types are HEAPU16)
      type -= 0x1400;
  
      if (type == 1) return HEAPU8;
  
      if (type == 4) return HEAP32;
  
      if (type == 6) return HEAPF32;
  
      if (type == 5
        || type == 28922
        )
        return HEAPU32;
  
      return HEAPU16;
    };
  
  var toTypedArrayIndex = (pointer, heap) =>
      pointer >>> (31 - Math.clz32(heap.BYTES_PER_ELEMENT));
  
  var emscriptenWebGLGetTexPixelData = (type, format, width, height, pixels, internalFormat) => {
      var heap = heapObjectForWebGLType(type);
      var sizePerPixel = colorChannelsInGlTextureFormat(format) * heap.BYTES_PER_ELEMENT;
      var bytes = computeUnpackAlignedImageSize(width, height, sizePerPixel);
      return heap.subarray(toTypedArrayIndex(pixels, heap), toTypedArrayIndex(pixels + bytes, heap));
    };
  
  /** @suppress {duplicate } */
  var _glReadPixels = (x, y, width, height, format, type, pixels) => {
      var pixelData = emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, format);
      if (!pixelData) {
        GL.recordError(0x500/*GL_INVALID_ENUM*/);
        return;
      }
      GLctx.readPixels(x, y, width, height, format, type, pixelData);
    };
  var _emscripten_glReadPixels = _glReadPixels;

  /** @suppress {duplicate } */
  var _glReleaseShaderCompiler = () => {
      // NOP (as allowed by GLES 2.0 spec)
    };
  var _emscripten_glReleaseShaderCompiler = _glReleaseShaderCompiler;

  /** @suppress {duplicate } */
  var _glRenderbufferStorage = (x0, x1, x2, x3) => GLctx.renderbufferStorage(x0, x1, x2, x3);
  var _emscripten_glRenderbufferStorage = _glRenderbufferStorage;

  /** @suppress {duplicate } */
  var _glSampleCoverage = (value, invert) => {
      GLctx.sampleCoverage(value, !!invert);
    };
  var _emscripten_glSampleCoverage = _glSampleCoverage;

  /** @suppress {duplicate } */
  var _glScissor = (x0, x1, x2, x3) => GLctx.scissor(x0, x1, x2, x3);
  var _emscripten_glScissor = _glScissor;

  /** @suppress {duplicate } */
  var _glShaderBinary = (count, shaders, binaryformat, binary, length) => {
      GL.recordError(0x500/*GL_INVALID_ENUM*/);
    };
  var _emscripten_glShaderBinary = _glShaderBinary;

  /** @suppress {duplicate } */
  var _glShaderSource = (shader, count, string, length) => {
      var source = GL.getSource(shader, count, string, length);
  
      GLctx.shaderSource(GL.shaders[shader], source);
    };
  var _emscripten_glShaderSource = _glShaderSource;

  /** @suppress {duplicate } */
  var _glStencilFunc = (x0, x1, x2) => GLctx.stencilFunc(x0, x1, x2);
  var _emscripten_glStencilFunc = _glStencilFunc;

  /** @suppress {duplicate } */
  var _glStencilFuncSeparate = (x0, x1, x2, x3) => GLctx.stencilFuncSeparate(x0, x1, x2, x3);
  var _emscripten_glStencilFuncSeparate = _glStencilFuncSeparate;

  /** @suppress {duplicate } */
  var _glStencilMask = (x0) => GLctx.stencilMask(x0);
  var _emscripten_glStencilMask = _glStencilMask;

  /** @suppress {duplicate } */
  var _glStencilMaskSeparate = (x0, x1) => GLctx.stencilMaskSeparate(x0, x1);
  var _emscripten_glStencilMaskSeparate = _glStencilMaskSeparate;

  /** @suppress {duplicate } */
  var _glStencilOp = (x0, x1, x2) => GLctx.stencilOp(x0, x1, x2);
  var _emscripten_glStencilOp = _glStencilOp;

  /** @suppress {duplicate } */
  var _glStencilOpSeparate = (x0, x1, x2, x3) => GLctx.stencilOpSeparate(x0, x1, x2, x3);
  var _emscripten_glStencilOpSeparate = _glStencilOpSeparate;

  
  /** @suppress {duplicate } */
  var _glTexImage2D = (target, level, internalFormat, width, height, border, format, type, pixels) => {
      var pixelData = pixels ? emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, internalFormat) : null;
      GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixelData);
    };
  var _emscripten_glTexImage2D = _glTexImage2D;

  /** @suppress {duplicate } */
  var _glTexParameterf = (x0, x1, x2) => GLctx.texParameterf(x0, x1, x2);
  var _emscripten_glTexParameterf = _glTexParameterf;

  /** @suppress {duplicate } */
  var _glTexParameterfv = (target, pname, params) => {
      var param = HEAPF32[((params)>>2)];
      GLctx.texParameterf(target, pname, param);
    };
  var _emscripten_glTexParameterfv = _glTexParameterfv;

  /** @suppress {duplicate } */
  var _glTexParameteri = (x0, x1, x2) => GLctx.texParameteri(x0, x1, x2);
  var _emscripten_glTexParameteri = _glTexParameteri;

  /** @suppress {duplicate } */
  var _glTexParameteriv = (target, pname, params) => {
      var param = HEAP32[((params)>>2)];
      GLctx.texParameteri(target, pname, param);
    };
  var _emscripten_glTexParameteriv = _glTexParameteriv;

  
  /** @suppress {duplicate } */
  var _glTexSubImage2D = (target, level, xoffset, yoffset, width, height, format, type, pixels) => {
      var pixelData = pixels ? emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, 0) : null;
      GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixelData);
    };
  var _emscripten_glTexSubImage2D = _glTexSubImage2D;

  
  /** @suppress {duplicate } */
  var _glUniform1f = (location, v0) => {
      GLctx.uniform1f(webglGetUniformLocation(location), v0);
    };
  var _emscripten_glUniform1f = _glUniform1f;

  
  var miniTempWebGLFloatBuffers = [];
  
  /** @suppress {duplicate } */
  var _glUniform1fv = (location, count, value) => {
  
      if (count <= 288) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[count];
        for (var i = 0; i < count; ++i) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*4)>>2));
      }
      GLctx.uniform1fv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform1fv = _glUniform1fv;

  
  /** @suppress {duplicate } */
  var _glUniform1i = (location, v0) => {
      GLctx.uniform1i(webglGetUniformLocation(location), v0);
    };
  var _emscripten_glUniform1i = _glUniform1i;

  
  var miniTempWebGLIntBuffers = [];
  
  /** @suppress {duplicate } */
  var _glUniform1iv = (location, count, value) => {
  
      if (count <= 288) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLIntBuffers[count];
        for (var i = 0; i < count; ++i) {
          view[i] = HEAP32[(((value)+(4*i))>>2)];
        }
      } else
      {
        var view = HEAP32.subarray((((value)>>2)), ((value+count*4)>>2));
      }
      GLctx.uniform1iv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform1iv = _glUniform1iv;

  
  /** @suppress {duplicate } */
  var _glUniform2f = (location, v0, v1) => {
      GLctx.uniform2f(webglGetUniformLocation(location), v0, v1);
    };
  var _emscripten_glUniform2f = _glUniform2f;

  
  
  /** @suppress {duplicate } */
  var _glUniform2fv = (location, count, value) => {
  
      if (count <= 144) {
        // avoid allocation when uploading few enough uniforms
        count *= 2;
        var view = miniTempWebGLFloatBuffers[count];
        for (var i = 0; i < count; i += 2) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
          view[i+1] = HEAPF32[(((value)+(4*i+4))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*8)>>2));
      }
      GLctx.uniform2fv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform2fv = _glUniform2fv;

  
  /** @suppress {duplicate } */
  var _glUniform2i = (location, v0, v1) => {
      GLctx.uniform2i(webglGetUniformLocation(location), v0, v1);
    };
  var _emscripten_glUniform2i = _glUniform2i;

  
  
  /** @suppress {duplicate } */
  var _glUniform2iv = (location, count, value) => {
  
      if (count <= 144) {
        // avoid allocation when uploading few enough uniforms
        count *= 2;
        var view = miniTempWebGLIntBuffers[count];
        for (var i = 0; i < count; i += 2) {
          view[i] = HEAP32[(((value)+(4*i))>>2)];
          view[i+1] = HEAP32[(((value)+(4*i+4))>>2)];
        }
      } else
      {
        var view = HEAP32.subarray((((value)>>2)), ((value+count*8)>>2));
      }
      GLctx.uniform2iv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform2iv = _glUniform2iv;

  
  /** @suppress {duplicate } */
  var _glUniform3f = (location, v0, v1, v2) => {
      GLctx.uniform3f(webglGetUniformLocation(location), v0, v1, v2);
    };
  var _emscripten_glUniform3f = _glUniform3f;

  
  
  /** @suppress {duplicate } */
  var _glUniform3fv = (location, count, value) => {
  
      if (count <= 96) {
        // avoid allocation when uploading few enough uniforms
        count *= 3;
        var view = miniTempWebGLFloatBuffers[count];
        for (var i = 0; i < count; i += 3) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
          view[i+1] = HEAPF32[(((value)+(4*i+4))>>2)];
          view[i+2] = HEAPF32[(((value)+(4*i+8))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*12)>>2));
      }
      GLctx.uniform3fv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform3fv = _glUniform3fv;

  
  /** @suppress {duplicate } */
  var _glUniform3i = (location, v0, v1, v2) => {
      GLctx.uniform3i(webglGetUniformLocation(location), v0, v1, v2);
    };
  var _emscripten_glUniform3i = _glUniform3i;

  
  
  /** @suppress {duplicate } */
  var _glUniform3iv = (location, count, value) => {
  
      if (count <= 96) {
        // avoid allocation when uploading few enough uniforms
        count *= 3;
        var view = miniTempWebGLIntBuffers[count];
        for (var i = 0; i < count; i += 3) {
          view[i] = HEAP32[(((value)+(4*i))>>2)];
          view[i+1] = HEAP32[(((value)+(4*i+4))>>2)];
          view[i+2] = HEAP32[(((value)+(4*i+8))>>2)];
        }
      } else
      {
        var view = HEAP32.subarray((((value)>>2)), ((value+count*12)>>2));
      }
      GLctx.uniform3iv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform3iv = _glUniform3iv;

  
  /** @suppress {duplicate } */
  var _glUniform4f = (location, v0, v1, v2, v3) => {
      GLctx.uniform4f(webglGetUniformLocation(location), v0, v1, v2, v3);
    };
  var _emscripten_glUniform4f = _glUniform4f;

  
  
  /** @suppress {duplicate } */
  var _glUniform4fv = (location, count, value) => {
  
      if (count <= 72) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[4*count];
        // hoist the heap out of the loop for size and for pthreads+growth.
        var heap = HEAPF32;
        value = ((value)>>2);
        count *= 4;
        for (var i = 0; i < count; i += 4) {
          var dst = value + i;
          view[i] = heap[dst];
          view[i + 1] = heap[dst + 1];
          view[i + 2] = heap[dst + 2];
          view[i + 3] = heap[dst + 3];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*16)>>2));
      }
      GLctx.uniform4fv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform4fv = _glUniform4fv;

  
  /** @suppress {duplicate } */
  var _glUniform4i = (location, v0, v1, v2, v3) => {
      GLctx.uniform4i(webglGetUniformLocation(location), v0, v1, v2, v3);
    };
  var _emscripten_glUniform4i = _glUniform4i;

  
  
  /** @suppress {duplicate } */
  var _glUniform4iv = (location, count, value) => {
  
      if (count <= 72) {
        // avoid allocation when uploading few enough uniforms
        count *= 4;
        var view = miniTempWebGLIntBuffers[count];
        for (var i = 0; i < count; i += 4) {
          view[i] = HEAP32[(((value)+(4*i))>>2)];
          view[i+1] = HEAP32[(((value)+(4*i+4))>>2)];
          view[i+2] = HEAP32[(((value)+(4*i+8))>>2)];
          view[i+3] = HEAP32[(((value)+(4*i+12))>>2)];
        }
      } else
      {
        var view = HEAP32.subarray((((value)>>2)), ((value+count*16)>>2));
      }
      GLctx.uniform4iv(webglGetUniformLocation(location), view);
    };
  var _emscripten_glUniform4iv = _glUniform4iv;

  
  
  /** @suppress {duplicate } */
  var _glUniformMatrix2fv = (location, count, transpose, value) => {
  
      if (count <= 72) {
        // avoid allocation when uploading few enough uniforms
        count *= 4;
        var view = miniTempWebGLFloatBuffers[count];
        for (var i = 0; i < count; i += 4) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
          view[i+1] = HEAPF32[(((value)+(4*i+4))>>2)];
          view[i+2] = HEAPF32[(((value)+(4*i+8))>>2)];
          view[i+3] = HEAPF32[(((value)+(4*i+12))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*16)>>2));
      }
      GLctx.uniformMatrix2fv(webglGetUniformLocation(location), !!transpose, view);
    };
  var _emscripten_glUniformMatrix2fv = _glUniformMatrix2fv;

  
  
  /** @suppress {duplicate } */
  var _glUniformMatrix3fv = (location, count, transpose, value) => {
  
      if (count <= 32) {
        // avoid allocation when uploading few enough uniforms
        count *= 9;
        var view = miniTempWebGLFloatBuffers[count];
        for (var i = 0; i < count; i += 9) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
          view[i+1] = HEAPF32[(((value)+(4*i+4))>>2)];
          view[i+2] = HEAPF32[(((value)+(4*i+8))>>2)];
          view[i+3] = HEAPF32[(((value)+(4*i+12))>>2)];
          view[i+4] = HEAPF32[(((value)+(4*i+16))>>2)];
          view[i+5] = HEAPF32[(((value)+(4*i+20))>>2)];
          view[i+6] = HEAPF32[(((value)+(4*i+24))>>2)];
          view[i+7] = HEAPF32[(((value)+(4*i+28))>>2)];
          view[i+8] = HEAPF32[(((value)+(4*i+32))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*36)>>2));
      }
      GLctx.uniformMatrix3fv(webglGetUniformLocation(location), !!transpose, view);
    };
  var _emscripten_glUniformMatrix3fv = _glUniformMatrix3fv;

  
  
  /** @suppress {duplicate } */
  var _glUniformMatrix4fv = (location, count, transpose, value) => {
  
      if (count <= 18) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[16*count];
        // hoist the heap out of the loop for size and for pthreads+growth.
        var heap = HEAPF32;
        value = ((value)>>2);
        count *= 16;
        for (var i = 0; i < count; i += 16) {
          var dst = value + i;
          view[i] = heap[dst];
          view[i + 1] = heap[dst + 1];
          view[i + 2] = heap[dst + 2];
          view[i + 3] = heap[dst + 3];
          view[i + 4] = heap[dst + 4];
          view[i + 5] = heap[dst + 5];
          view[i + 6] = heap[dst + 6];
          view[i + 7] = heap[dst + 7];
          view[i + 8] = heap[dst + 8];
          view[i + 9] = heap[dst + 9];
          view[i + 10] = heap[dst + 10];
          view[i + 11] = heap[dst + 11];
          view[i + 12] = heap[dst + 12];
          view[i + 13] = heap[dst + 13];
          view[i + 14] = heap[dst + 14];
          view[i + 15] = heap[dst + 15];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*64)>>2));
      }
      GLctx.uniformMatrix4fv(webglGetUniformLocation(location), !!transpose, view);
    };
  var _emscripten_glUniformMatrix4fv = _glUniformMatrix4fv;

  /** @suppress {duplicate } */
  var _glUseProgram = (program) => {
      program = GL.programs[program];
      GLctx.useProgram(program);
      // Record the currently active program so that we can access the uniform
      // mapping table of that program.
      GLctx.currentProgram = program;
    };
  var _emscripten_glUseProgram = _glUseProgram;

  /** @suppress {duplicate } */
  var _glValidateProgram = (program) => {
      GLctx.validateProgram(GL.programs[program]);
    };
  var _emscripten_glValidateProgram = _glValidateProgram;

  /** @suppress {duplicate } */
  var _glVertexAttrib1f = (x0, x1) => GLctx.vertexAttrib1f(x0, x1);
  var _emscripten_glVertexAttrib1f = _glVertexAttrib1f;

  /** @suppress {duplicate } */
  var _glVertexAttrib1fv = (index, v) => {
  
      GLctx.vertexAttrib1f(index, HEAPF32[v>>2]);
    };
  var _emscripten_glVertexAttrib1fv = _glVertexAttrib1fv;

  /** @suppress {duplicate } */
  var _glVertexAttrib2f = (x0, x1, x2) => GLctx.vertexAttrib2f(x0, x1, x2);
  var _emscripten_glVertexAttrib2f = _glVertexAttrib2f;

  /** @suppress {duplicate } */
  var _glVertexAttrib2fv = (index, v) => {
  
      GLctx.vertexAttrib2f(index, HEAPF32[v>>2], HEAPF32[v+4>>2]);
    };
  var _emscripten_glVertexAttrib2fv = _glVertexAttrib2fv;

  /** @suppress {duplicate } */
  var _glVertexAttrib3f = (x0, x1, x2, x3) => GLctx.vertexAttrib3f(x0, x1, x2, x3);
  var _emscripten_glVertexAttrib3f = _glVertexAttrib3f;

  /** @suppress {duplicate } */
  var _glVertexAttrib3fv = (index, v) => {
  
      GLctx.vertexAttrib3f(index, HEAPF32[v>>2], HEAPF32[v+4>>2], HEAPF32[v+8>>2]);
    };
  var _emscripten_glVertexAttrib3fv = _glVertexAttrib3fv;

  /** @suppress {duplicate } */
  var _glVertexAttrib4f = (x0, x1, x2, x3, x4) => GLctx.vertexAttrib4f(x0, x1, x2, x3, x4);
  var _emscripten_glVertexAttrib4f = _glVertexAttrib4f;

  /** @suppress {duplicate } */
  var _glVertexAttrib4fv = (index, v) => {
  
      GLctx.vertexAttrib4f(index, HEAPF32[v>>2], HEAPF32[v+4>>2], HEAPF32[v+8>>2], HEAPF32[v+12>>2]);
    };
  var _emscripten_glVertexAttrib4fv = _glVertexAttrib4fv;

  
  /** @suppress {duplicate } */
  var _glVertexAttribDivisor = (index, divisor) => {
      GLctx.vertexAttribDivisor(index, divisor);
    };
  /** @suppress {duplicate } */
  var _glVertexAttribDivisorANGLE = _glVertexAttribDivisor;
  var _emscripten_glVertexAttribDivisorANGLE = _glVertexAttribDivisorANGLE;

  /** @suppress {duplicate } */
  var _glVertexAttribPointer = (index, size, type, normalized, stride, ptr) => {
      GLctx.vertexAttribPointer(index, size, type, !!normalized, stride, ptr);
    };
  var _emscripten_glVertexAttribPointer = _glVertexAttribPointer;

  /** @suppress {duplicate } */
  var _glViewport = (x0, x1, x2, x3) => GLctx.viewport(x0, x1, x2, x3);
  var _emscripten_glViewport = _glViewport;

  var getHeapMax = () =>
      HEAPU8.length;
  
  
  var abortOnCannotGrowMemory = (requestedSize) => {
      abort(`Cannot enlarge memory arrays to size ${requestedSize} bytes (OOM). Either (1) compile with -sINITIAL_MEMORY=X with X higher than the current value ${HEAP8.length}, (2) compile with -sALLOW_MEMORY_GROWTH which allows increasing the size at runtime, or (3) if you want malloc to return NULL (0) instead of this abort, compile with -sABORTING_MALLOC=0`);
    };
  var _emscripten_resize_heap = (requestedSize) => {
      var oldSize = HEAPU8.length;
      // With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
      requestedSize >>>= 0;
      abortOnCannotGrowMemory(requestedSize);
    };

  /** @suppress {checkTypes} */
  var _emscripten_sample_gamepad_data = () => {
      try {
        if (navigator.getGamepads) return (JSEvents.lastGamepadState = navigator.getGamepads())
          ? 0 : -1;
      } catch(e) {
        err(`navigator.getGamepads() exists, but failed to execute with exception ${e}. Disabling Gamepad access.`);
        navigator.getGamepads = null; // Disable getGamepads() so that it won't be attempted to be used again.
      }
      return -1;
    };

  
  var findCanvasEventTarget = findEventTarget;
  var _emscripten_set_canvas_element_size = (target, width, height) => {
      var canvas = findCanvasEventTarget(target);
      if (!canvas) return -4;
      canvas.width = width;
      canvas.height = height;
      return 0;
    };

  
  
  
  var fillMouseEventData = (eventStruct, e, target) => {
      assert(eventStruct % 4 == 0);
      HEAPF64[((eventStruct)>>3)] = e.timeStamp;
      var idx = ((eventStruct)>>2);
      HEAP32[idx + 2] = e.screenX;
      HEAP32[idx + 3] = e.screenY;
      HEAP32[idx + 4] = e.clientX;
      HEAP32[idx + 5] = e.clientY;
      HEAP8[eventStruct + 24] = e.ctrlKey;
      HEAP8[eventStruct + 25] = e.shiftKey;
      HEAP8[eventStruct + 26] = e.altKey;
      HEAP8[eventStruct + 27] = e.metaKey;
      HEAP16[idx*2 + 14] = e.button;
      HEAP16[idx*2 + 15] = e.buttons;
  
      HEAP32[idx + 8] = e["movementX"]
        ;
  
      HEAP32[idx + 9] = e["movementY"]
        ;
  
      // Note: rect contains doubles (truncated to placate SAFE_HEAP, which is the same behaviour when writing to HEAP32 anyway)
      var rect = getBoundingClientRect(target);
      HEAP32[idx + 10] = e.clientX - (rect.left | 0);
      HEAP32[idx + 11] = e.clientY - (rect.top  | 0);
  
    };
  
  
  
  var wasmTableMirror = [];
  
  /** @type {WebAssembly.Table} */
  var wasmTable;
  var getWasmTableEntry = (funcPtr) => {
      var func = wasmTableMirror[funcPtr];
      if (!func) {
        if (funcPtr >= wasmTableMirror.length) wasmTableMirror.length = funcPtr + 1;
        /** @suppress {checkTypes} */
        wasmTableMirror[funcPtr] = func = wasmTable.get(funcPtr);
      }
      /** @suppress {checkTypes} */
      assert(wasmTable.get(funcPtr) == func, 'JavaScript-side Wasm function table mirror is out of date!');
      return func;
    };
  var registerMouseEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      JSEvents.mouseEvent ||= _malloc(64);
      target = findEventTarget(target);
  
      var mouseEventHandlerFunc = (e = event) => {
        // TODO: Make this access thread safe, or this could update live while app is reading it.
        fillMouseEventData(JSEvents.mouseEvent, e, target);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, JSEvents.mouseEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        allowsDeferredCalls: eventTypeString != 'mousemove' && eventTypeString != 'mouseenter' && eventTypeString != 'mouseleave', // Mouse move events do not allow fullscreen/pointer lock requests to be handled in them!
        eventTypeString,
        callbackfunc,
        handlerFunc: mouseEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_click_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 4, "click", targetThread);

  
  
  
  var fillFullscreenChangeEventData = (eventStruct) => {
      var fullscreenElement = document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement;
      var isFullscreen = !!fullscreenElement;
      // Assigning a boolean to HEAP32 with expected type coercion.
      /** @suppress{checkTypes} */
      HEAP8[eventStruct] = isFullscreen;
      HEAP8[(eventStruct)+(1)] = JSEvents.fullscreenEnabled();
      // If transitioning to fullscreen, report info about the element that is now fullscreen.
      // If transitioning to windowed mode, report info about the element that just was fullscreen.
      var reportedElement = isFullscreen ? fullscreenElement : JSEvents.previousFullscreenElement;
      var nodeName = JSEvents.getNodeNameForTarget(reportedElement);
      var id = reportedElement?.id || '';
      stringToUTF8(nodeName, eventStruct + 2, 128);
      stringToUTF8(id, eventStruct + 130, 128);
      HEAP32[(((eventStruct)+(260))>>2)] = reportedElement ? reportedElement.clientWidth : 0;
      HEAP32[(((eventStruct)+(264))>>2)] = reportedElement ? reportedElement.clientHeight : 0;
      HEAP32[(((eventStruct)+(268))>>2)] = screen.width;
      HEAP32[(((eventStruct)+(272))>>2)] = screen.height;
      if (isFullscreen) {
        JSEvents.previousFullscreenElement = fullscreenElement;
      }
    };
  
  
  
  var registerFullscreenChangeEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      JSEvents.fullscreenChangeEvent ||= _malloc(276);
  
      var fullscreenChangeEventhandlerFunc = (e = event) => {
        var fullscreenChangeEvent = JSEvents.fullscreenChangeEvent;
  
        fillFullscreenChangeEventData(fullscreenChangeEvent);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, fullscreenChangeEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        eventTypeString,
        callbackfunc,
        handlerFunc: fullscreenChangeEventhandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  
  var _emscripten_set_fullscreenchange_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      if (!JSEvents.fullscreenEnabled()) return -1;
      target = findEventTarget(target);
      if (!target) return -4;
  
      // Unprefixed Fullscreen API shipped in Chromium 71 (https://bugs.chromium.org/p/chromium/issues/detail?id=383813)
      // As of Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitfullscreenchange. TODO: revisit this check once Safari ships unprefixed version.
      registerFullscreenChangeEventCallback(target, userData, useCapture, callbackfunc, 19, "webkitfullscreenchange", targetThread);
  
      return registerFullscreenChangeEventCallback(target, userData, useCapture, callbackfunc, 19, "fullscreenchange", targetThread);
    };

  
  
  
  
  var registerGamepadEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      JSEvents.gamepadEvent ||= _malloc(1240);
  
      var gamepadEventHandlerFunc = (e = event) => {
        var gamepadEvent = JSEvents.gamepadEvent;
        fillGamepadEventData(gamepadEvent, e["gamepad"]);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, gamepadEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        allowsDeferredCalls: true,
        eventTypeString,
        callbackfunc,
        handlerFunc: gamepadEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  var _emscripten_set_gamepadconnected_callback_on_thread = (userData, useCapture, callbackfunc, targetThread) => {
      if (_emscripten_sample_gamepad_data()) return -1;
      return registerGamepadEventCallback(2, userData, useCapture, callbackfunc, 26, "gamepadconnected", targetThread);
    };

  
  var _emscripten_set_gamepaddisconnected_callback_on_thread = (userData, useCapture, callbackfunc, targetThread) => {
      if (_emscripten_sample_gamepad_data()) return -1;
      return registerGamepadEventCallback(2, userData, useCapture, callbackfunc, 27, "gamepaddisconnected", targetThread);
    };

  
  var handleException = (e) => {
      // Certain exception types we do not treat as errors since they are used for
      // internal control flow.
      // 1. ExitStatus, which is thrown by exit()
      // 2. "unwind", which is thrown by emscripten_unwind_to_js_event_loop() and others
      //    that wish to return to JS event loop.
      if (e instanceof ExitStatus || e == 'unwind') {
        return EXITSTATUS;
      }
      checkStackCookie();
      if (e instanceof WebAssembly.RuntimeError) {
        if (_emscripten_stack_get_current() <= 0) {
          err('Stack overflow detected.  You can try increasing -sSTACK_SIZE (currently set to 65536)');
        }
      }
      quit_(1, e);
    };
  
  
  var runtimeKeepaliveCounter = 0;
  var keepRuntimeAlive = () => noExitRuntime || runtimeKeepaliveCounter > 0;
  var _proc_exit = (code) => {
      EXITSTATUS = code;
      if (!keepRuntimeAlive()) {
        Module['onExit']?.(code);
        ABORT = true;
      }
      quit_(code, new ExitStatus(code));
    };
  
  
  /** @suppress {duplicate } */
  /** @param {boolean|number=} implicit */
  var exitJS = (status, implicit) => {
      EXITSTATUS = status;
  
      checkUnflushedContent();
  
      // if exit() was called explicitly, warn the user if the runtime isn't actually being shut down
      if (keepRuntimeAlive() && !implicit) {
        var msg = `program exited (with status: ${status}), but keepRuntimeAlive() is set (counter=${runtimeKeepaliveCounter}) due to an async operation, so halting execution but not exiting the runtime or preventing further async execution (you can use emscripten_force_exit, if you want to force a true shutdown)`;
        err(msg);
      }
  
      _proc_exit(status);
    };
  var _exit = exitJS;
  
  
  var maybeExit = () => {
      if (!keepRuntimeAlive()) {
        try {
          _exit(EXITSTATUS);
        } catch (e) {
          handleException(e);
        }
      }
    };
  var callUserCallback = (func) => {
      if (ABORT) {
        err('user callback triggered after runtime exited or application aborted.  Ignoring.');
        return;
      }
      try {
        func();
        maybeExit();
      } catch (e) {
        handleException(e);
      }
    };
  
  var _emscripten_set_main_loop_timing = (mode, value) => {
      MainLoop.timingMode = mode;
      MainLoop.timingValue = value;
  
      if (!MainLoop.func) {
        err('emscripten_set_main_loop_timing: Cannot set timing mode for main loop since a main loop does not exist! Call emscripten_set_main_loop first to set one up.');
        return 1; // Return non-zero on failure, can't set timing mode when there is no main loop.
      }
  
      if (!MainLoop.running) {
        
        MainLoop.running = true;
      }
      if (mode == 0) {
        MainLoop.scheduler = function MainLoop_scheduler_setTimeout() {
          var timeUntilNextTick = Math.max(0, MainLoop.tickStartTime + value - _emscripten_get_now())|0;
          setTimeout(MainLoop.runner, timeUntilNextTick); // doing this each time means that on exception, we stop
        };
        MainLoop.method = 'timeout';
      } else if (mode == 1) {
        MainLoop.scheduler = function MainLoop_scheduler_rAF() {
          MainLoop.requestAnimationFrame(MainLoop.runner);
        };
        MainLoop.method = 'rAF';
      } else if (mode == 2) {
        if (typeof MainLoop.setImmediate == 'undefined') {
          if (typeof setImmediate == 'undefined') {
            // Emulate setImmediate. (note: not a complete polyfill, we don't emulate clearImmediate() to keep code size to minimum, since not needed)
            var setImmediates = [];
            var emscriptenMainLoopMessageId = 'setimmediate';
            /** @param {Event} event */
            var MainLoop_setImmediate_messageHandler = (event) => {
              // When called in current thread or Worker, the main loop ID is structured slightly different to accommodate for --proxy-to-worker runtime listening to Worker events,
              // so check for both cases.
              if (event.data === emscriptenMainLoopMessageId || event.data.target === emscriptenMainLoopMessageId) {
                event.stopPropagation();
                setImmediates.shift()();
              }
            };
            addEventListener("message", MainLoop_setImmediate_messageHandler, true);
            MainLoop.setImmediate = /** @type{function(function(): ?, ...?): number} */((func) => {
              setImmediates.push(func);
              if (ENVIRONMENT_IS_WORKER) {
                Module['setImmediates'] ??= [];
                Module['setImmediates'].push(func);
                postMessage({target: emscriptenMainLoopMessageId}); // In --proxy-to-worker, route the message via proxyClient.js
              } else postMessage(emscriptenMainLoopMessageId, "*"); // On the main thread, can just send the message to itself.
            });
          } else {
            MainLoop.setImmediate = setImmediate;
          }
        }
        MainLoop.scheduler = function MainLoop_scheduler_setImmediate() {
          MainLoop.setImmediate(MainLoop.runner);
        };
        MainLoop.method = 'immediate';
      }
      return 0;
    };
  var MainLoop = {
  running:false,
  scheduler:null,
  method:"",
  currentlyRunningMainloop:0,
  func:null,
  arg:0,
  timingMode:0,
  timingValue:0,
  currentFrameNumber:0,
  queue:[],
  preMainLoop:[],
  postMainLoop:[],
  pause() {
        MainLoop.scheduler = null;
        // Incrementing this signals the previous main loop that it's now become old, and it must return.
        MainLoop.currentlyRunningMainloop++;
      },
  resume() {
        MainLoop.currentlyRunningMainloop++;
        var timingMode = MainLoop.timingMode;
        var timingValue = MainLoop.timingValue;
        var func = MainLoop.func;
        MainLoop.func = null;
        // do not set timing and call scheduler, we will do it on the next lines
        setMainLoop(func, 0, false, MainLoop.arg, true);
        _emscripten_set_main_loop_timing(timingMode, timingValue);
        MainLoop.scheduler();
      },
  updateStatus() {
        if (Module['setStatus']) {
          var message = Module['statusMessage'] || 'Please wait...';
          var remaining = MainLoop.remainingBlockers ?? 0;
          var expected = MainLoop.expectedBlockers ?? 0;
          if (remaining) {
            if (remaining < expected) {
              Module['setStatus'](`{message} ({expected - remaining}/{expected})`);
            } else {
              Module['setStatus'](message);
            }
          } else {
            Module['setStatus']('');
          }
        }
      },
  init() {
        Module['preMainLoop'] && MainLoop.preMainLoop.push(Module['preMainLoop']);
        Module['postMainLoop'] && MainLoop.postMainLoop.push(Module['postMainLoop']);
      },
  runIter(func) {
        if (ABORT) return;
        for (var pre of MainLoop.preMainLoop) {
          if (pre() === false) {
            return; // |return false| skips a frame
          }
        }
        callUserCallback(func);
        for (var post of MainLoop.postMainLoop) {
          post();
        }
        checkStackCookie();
      },
  nextRAF:0,
  fakeRequestAnimationFrame(func) {
        // try to keep 60fps between calls to here
        var now = Date.now();
        if (MainLoop.nextRAF === 0) {
          MainLoop.nextRAF = now + 1000/60;
        } else {
          while (now + 2 >= MainLoop.nextRAF) { // fudge a little, to avoid timer jitter causing us to do lots of delay:0
            MainLoop.nextRAF += 1000/60;
          }
        }
        var delay = Math.max(MainLoop.nextRAF - now, 0);
        setTimeout(func, delay);
      },
  requestAnimationFrame(func) {
        if (typeof requestAnimationFrame == 'function') {
          requestAnimationFrame(func);
          return;
        }
        var RAF = MainLoop.fakeRequestAnimationFrame;
        RAF(func);
      },
  };
  
  
  
  
    /**
     * @param {number=} arg
     * @param {boolean=} noSetTiming
     */
  var setMainLoop = (iterFunc, fps, simulateInfiniteLoop, arg, noSetTiming) => {
      assert(!MainLoop.func, 'emscripten_set_main_loop: there can only be one main loop function at once: call emscripten_cancel_main_loop to cancel the previous one before setting a new one with different parameters.');
      MainLoop.func = iterFunc;
      MainLoop.arg = arg;
  
      var thisMainLoopId = MainLoop.currentlyRunningMainloop;
      function checkIsRunning() {
        if (thisMainLoopId < MainLoop.currentlyRunningMainloop) {
          
          maybeExit();
          return false;
        }
        return true;
      }
  
      // We create the loop runner here but it is not actually running until
      // _emscripten_set_main_loop_timing is called (which might happen a
      // later time).  This member signifies that the current runner has not
      // yet been started so that we can call runtimeKeepalivePush when it
      // gets it timing set for the first time.
      MainLoop.running = false;
      MainLoop.runner = function MainLoop_runner() {
        if (ABORT) return;
        if (MainLoop.queue.length > 0) {
          var start = Date.now();
          var blocker = MainLoop.queue.shift();
          blocker.func(blocker.arg);
          if (MainLoop.remainingBlockers) {
            var remaining = MainLoop.remainingBlockers;
            var next = remaining%1 == 0 ? remaining-1 : Math.floor(remaining);
            if (blocker.counted) {
              MainLoop.remainingBlockers = next;
            } else {
              // not counted, but move the progress along a tiny bit
              next = next + 0.5; // do not steal all the next one's progress
              MainLoop.remainingBlockers = (8*remaining + next)/9;
            }
          }
          MainLoop.updateStatus();
  
          // catches pause/resume main loop from blocker execution
          if (!checkIsRunning()) return;
  
          setTimeout(MainLoop.runner, 0);
          return;
        }
  
        // catch pauses from non-main loop sources
        if (!checkIsRunning()) return;
  
        // Implement very basic swap interval control
        MainLoop.currentFrameNumber = MainLoop.currentFrameNumber + 1 | 0;
        if (MainLoop.timingMode == 1 && MainLoop.timingValue > 1 && MainLoop.currentFrameNumber % MainLoop.timingValue != 0) {
          // Not the scheduled time to render this frame - skip.
          MainLoop.scheduler();
          return;
        } else if (MainLoop.timingMode == 0) {
          MainLoop.tickStartTime = _emscripten_get_now();
        }
  
        if (MainLoop.method === 'timeout' && Module['ctx']) {
          warnOnce('Looks like you are rendering without using requestAnimationFrame for the main loop. You should use 0 for the frame rate in emscripten_set_main_loop in order to use requestAnimationFrame, as that can greatly improve your frame rates!');
          MainLoop.method = ''; // just warn once per call to set main loop
        }
  
        MainLoop.runIter(iterFunc);
  
        // catch pauses from the main loop itself
        if (!checkIsRunning()) return;
  
        MainLoop.scheduler();
      }
  
      if (!noSetTiming) {
        if (fps > 0) {
          _emscripten_set_main_loop_timing(0, 1000.0 / fps);
        } else {
          // Do rAF by rendering each frame (no decimating)
          _emscripten_set_main_loop_timing(1, 1);
        }
  
        MainLoop.scheduler();
      }
  
      if (simulateInfiniteLoop) {
        throw 'unwind';
      }
    };
  
  var _emscripten_set_main_loop = (func, fps, simulateInfiniteLoop) => {
      var iterFunc = getWasmTableEntry(func);
      setMainLoop(iterFunc, fps, simulateInfiniteLoop);
    };

  var _emscripten_set_mousemove_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 8, "mousemove", targetThread);

  
  
  
  var fillPointerlockChangeEventData = (eventStruct) => {
      var pointerLockElement = document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement || document.msPointerLockElement;
      var isPointerlocked = !!pointerLockElement;
      // Assigning a boolean to HEAP32 with expected type coercion.
      /** @suppress{checkTypes} */
      HEAP8[eventStruct] = isPointerlocked;
      var nodeName = JSEvents.getNodeNameForTarget(pointerLockElement);
      var id = pointerLockElement?.id || '';
      stringToUTF8(nodeName, eventStruct + 1, 128);
      stringToUTF8(id, eventStruct + 129, 128);
    };
  
  
  
  var registerPointerlockChangeEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      JSEvents.pointerlockChangeEvent ||= _malloc(257);
  
      var pointerlockChangeEventHandlerFunc = (e = event) => {
        var pointerlockChangeEvent = JSEvents.pointerlockChangeEvent;
        fillPointerlockChangeEventData(pointerlockChangeEvent);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, pointerlockChangeEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        eventTypeString,
        callbackfunc,
        handlerFunc: pointerlockChangeEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  
  /** @suppress {missingProperties} */
  var _emscripten_set_pointerlockchange_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      // TODO: Currently not supported in pthreads or in --proxy-to-worker mode. (In pthreads mode, document object is not defined)
      if (!document || !document.body || (!document.body.requestPointerLock && !document.body.mozRequestPointerLock && !document.body.webkitRequestPointerLock && !document.body.msRequestPointerLock)) {
        return -1;
      }
  
      target = findEventTarget(target);
      if (!target) return -4;
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "mozpointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "webkitpointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "mspointerlockchange", targetThread);
      return registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "pointerlockchange", targetThread);
    };

  
  
  
  var registerUiEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      JSEvents.uiEvent ||= _malloc(36);
  
      target = findEventTarget(target);
  
      var uiEventHandlerFunc = (e = event) => {
        if (e.target != target) {
          // Never take ui events such as scroll via a 'bubbled' route, but always from the direct element that
          // was targeted. Otherwise e.g. if app logs a message in response to a page scroll, the Emscripten log
          // message box could cause to scroll, generating a new (bubbled) scroll message, causing a new log print,
          // causing a new scroll, etc..
          return;
        }
        var b = document.body; // Take document.body to a variable, Closure compiler does not outline access to it on its own.
        if (!b) {
          // During a page unload 'body' can be null, with "Cannot read property 'clientWidth' of null" being thrown
          return;
        }
        var uiEvent = JSEvents.uiEvent;
        HEAP32[((uiEvent)>>2)] = 0; // always zero for resize and scroll
        HEAP32[(((uiEvent)+(4))>>2)] = b.clientWidth;
        HEAP32[(((uiEvent)+(8))>>2)] = b.clientHeight;
        HEAP32[(((uiEvent)+(12))>>2)] = innerWidth;
        HEAP32[(((uiEvent)+(16))>>2)] = innerHeight;
        HEAP32[(((uiEvent)+(20))>>2)] = outerWidth;
        HEAP32[(((uiEvent)+(24))>>2)] = outerHeight;
        HEAP32[(((uiEvent)+(28))>>2)] = pageXOffset | 0; // scroll offsets are float
        HEAP32[(((uiEvent)+(32))>>2)] = pageYOffset | 0;
        if (getWasmTableEntry(callbackfunc)(eventTypeId, uiEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        eventTypeString,
        callbackfunc,
        handlerFunc: uiEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_resize_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerUiEventCallback(target, userData, useCapture, callbackfunc, 10, "resize", targetThread);

  
  
  
  
  var registerTouchEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      JSEvents.touchEvent ||= _malloc(1552);
  
      target = findEventTarget(target);
  
      var touchEventHandlerFunc = (e) => {
        assert(e);
        var t, touches = {}, et = e.touches;
        // To ease marshalling different kinds of touches that browser reports (all touches are listed in e.touches,
        // only changed touches in e.changedTouches, and touches on target at a.targetTouches), mark a boolean in
        // each Touch object so that we can later loop only once over all touches we see to marshall over to Wasm.
  
        for (let t of et) {
          // Browser might recycle the generated Touch objects between each frame (Firefox on Android), so reset any
          // changed/target states we may have set from previous frame.
          t.isChanged = t.onTarget = 0;
          touches[t.identifier] = t;
        }
        // Mark which touches are part of the changedTouches list.
        for (let t of e.changedTouches) {
          t.isChanged = 1;
          touches[t.identifier] = t;
        }
        // Mark which touches are part of the targetTouches list.
        for (let t of e.targetTouches) {
          touches[t.identifier].onTarget = 1;
        }
  
        var touchEvent = JSEvents.touchEvent;
        HEAPF64[((touchEvent)>>3)] = e.timeStamp;
        HEAP8[touchEvent + 12] = e.ctrlKey;
        HEAP8[touchEvent + 13] = e.shiftKey;
        HEAP8[touchEvent + 14] = e.altKey;
        HEAP8[touchEvent + 15] = e.metaKey;
        var idx = touchEvent + 16;
        var targetRect = getBoundingClientRect(target);
        var numTouches = 0;
        for (let t of Object.values(touches)) {
          var idx32 = ((idx)>>2); // Pre-shift the ptr to index to HEAP32 to save code size
          HEAP32[idx32 + 0] = t.identifier;
          HEAP32[idx32 + 1] = t.screenX;
          HEAP32[idx32 + 2] = t.screenY;
          HEAP32[idx32 + 3] = t.clientX;
          HEAP32[idx32 + 4] = t.clientY;
          HEAP32[idx32 + 5] = t.pageX;
          HEAP32[idx32 + 6] = t.pageY;
          HEAP8[idx + 28] = t.isChanged;
          HEAP8[idx + 29] = t.onTarget;
          HEAP32[idx32 + 8] = t.clientX - (targetRect.left | 0);
          HEAP32[idx32 + 9] = t.clientY - (targetRect.top  | 0);
  
          idx += 48;
  
          if (++numTouches > 31) {
            break;
          }
        }
        HEAP32[(((touchEvent)+(8))>>2)] = numTouches;
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, touchEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        allowsDeferredCalls: eventTypeString == 'touchstart' || eventTypeString == 'touchend',
        eventTypeString,
        callbackfunc,
        handlerFunc: touchEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_touchcancel_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 25, "touchcancel", targetThread);

  var _emscripten_set_touchend_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 23, "touchend", targetThread);

  var _emscripten_set_touchmove_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 24, "touchmove", targetThread);

  var _emscripten_set_touchstart_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 22, "touchstart", targetThread);

  
  /** @param {number=} timeout */
  var safeSetTimeout = (func, timeout) => {
      
      return setTimeout(() => {
        
        callUserCallback(func);
      }, timeout);
    };
  
  
  
  var Browser = {
  useWebGL:false,
  isFullscreen:false,
  pointerLock:false,
  moduleContextCreatedCallbacks:[],
  workers:[],
  preloadedImages:{
  },
  preloadedAudios:{
  },
  getCanvas:() => Module['canvas'],
  init() {
        if (Browser.initted) return;
        Browser.initted = true;
  
        // Support for plugins that can process preloaded files. You can add more of these to
        // your app by creating and appending to preloadPlugins.
        //
        // Each plugin is asked if it can handle a file based on the file's name. If it can,
        // it is given the file's raw data. When it is done, it calls a callback with the file's
        // (possibly modified) data. For example, a plugin might decompress a file, or it
        // might create some side data structure for use later (like an Image element, etc.).
  
        var imagePlugin = {};
        imagePlugin['canHandle'] = function imagePlugin_canHandle(name) {
          return !Module['noImageDecoding'] && /\.(jpg|jpeg|png|bmp|webp)$/i.test(name);
        };
        imagePlugin['handle'] = function imagePlugin_handle(byteArray, name, onload, onerror) {
          var b = new Blob([byteArray], { type: Browser.getMimetype(name) });
          if (b.size !== byteArray.length) { // Safari bug #118630
            // Safari's Blob can only take an ArrayBuffer
            b = new Blob([(new Uint8Array(byteArray)).buffer], { type: Browser.getMimetype(name) });
          }
          var url = URL.createObjectURL(b);
          assert(typeof url == 'string', 'createObjectURL must return a url as a string');
          var img = new Image();
          img.onload = () => {
            assert(img.complete, `Image ${name} could not be decoded`);
            var canvas = /** @type {!HTMLCanvasElement} */ (document.createElement('canvas'));
            canvas.width = img.width;
            canvas.height = img.height;
            var ctx = canvas.getContext('2d');
            ctx.drawImage(img, 0, 0);
            Browser.preloadedImages[name] = canvas;
            URL.revokeObjectURL(url);
            onload?.(byteArray);
          };
          img.onerror = (event) => {
            err(`Image ${url} could not be decoded`);
            onerror?.();
          };
          img.src = url;
        };
        preloadPlugins.push(imagePlugin);
  
        var audioPlugin = {};
        audioPlugin['canHandle'] = function audioPlugin_canHandle(name) {
          return !Module['noAudioDecoding'] && name.slice(-4) in { '.ogg': 1, '.wav': 1, '.mp3': 1 };
        };
        audioPlugin['handle'] = function audioPlugin_handle(byteArray, name, onload, onerror) {
          var done = false;
          function finish(audio) {
            if (done) return;
            done = true;
            Browser.preloadedAudios[name] = audio;
            onload?.(byteArray);
          }
          function fail() {
            if (done) return;
            done = true;
            Browser.preloadedAudios[name] = new Audio(); // empty shim
            onerror?.();
          }
          var b = new Blob([byteArray], { type: Browser.getMimetype(name) });
          var url = URL.createObjectURL(b); // XXX we never revoke this!
          assert(typeof url == 'string', 'createObjectURL must return a url as a string');
          var audio = new Audio();
          audio.addEventListener('canplaythrough', () => finish(audio), false); // use addEventListener due to chromium bug 124926
          audio.onerror = function audio_onerror(event) {
            if (done) return;
            err(`warning: browser could not fully decode audio ${name}, trying slower base64 approach`);
            function encode64(data) {
              var BASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
              var PAD = '=';
              var ret = '';
              var leftchar = 0;
              var leftbits = 0;
              for (var i = 0; i < data.length; i++) {
                leftchar = (leftchar << 8) | data[i];
                leftbits += 8;
                while (leftbits >= 6) {
                  var curr = (leftchar >> (leftbits-6)) & 0x3f;
                  leftbits -= 6;
                  ret += BASE[curr];
                }
              }
              if (leftbits == 2) {
                ret += BASE[(leftchar&3) << 4];
                ret += PAD + PAD;
              } else if (leftbits == 4) {
                ret += BASE[(leftchar&0xf) << 2];
                ret += PAD;
              }
              return ret;
            }
            audio.src = 'data:audio/x-' + name.slice(-3) + ';base64,' + encode64(byteArray);
            finish(audio); // we don't wait for confirmation this worked - but it's worth trying
          };
          audio.src = url;
          // workaround for chrome bug 124926 - we do not always get oncanplaythrough or onerror
          safeSetTimeout(() => {
            finish(audio); // try to use it even though it is not necessarily ready to play
          }, 10000);
        };
        preloadPlugins.push(audioPlugin);
  
        // Canvas event setup
  
        function pointerLockChange() {
          var canvas = Browser.getCanvas();
          Browser.pointerLock = document['pointerLockElement'] === canvas ||
                                document['mozPointerLockElement'] === canvas ||
                                document['webkitPointerLockElement'] === canvas ||
                                document['msPointerLockElement'] === canvas;
        }
        var canvas = Browser.getCanvas();
        if (canvas) {
          // forced aspect ratio can be enabled by defining 'forcedAspectRatio' on Module
          // Module['forcedAspectRatio'] = 4 / 3;
  
          canvas.requestPointerLock = canvas['requestPointerLock'] ||
                                      canvas['mozRequestPointerLock'] ||
                                      canvas['webkitRequestPointerLock'] ||
                                      canvas['msRequestPointerLock'] ||
                                      (() => {});
          canvas.exitPointerLock = document['exitPointerLock'] ||
                                   document['mozExitPointerLock'] ||
                                   document['webkitExitPointerLock'] ||
                                   document['msExitPointerLock'] ||
                                   (() => {}); // no-op if function does not exist
          canvas.exitPointerLock = canvas.exitPointerLock.bind(document);
  
          document.addEventListener('pointerlockchange', pointerLockChange, false);
          document.addEventListener('mozpointerlockchange', pointerLockChange, false);
          document.addEventListener('webkitpointerlockchange', pointerLockChange, false);
          document.addEventListener('mspointerlockchange', pointerLockChange, false);
  
          if (Module['elementPointerLock']) {
            canvas.addEventListener("click", (ev) => {
              if (!Browser.pointerLock && Browser.getCanvas().requestPointerLock) {
                Browser.getCanvas().requestPointerLock();
                ev.preventDefault();
              }
            }, false);
          }
        }
      },
  createContext(/** @type {HTMLCanvasElement} */ canvas, useWebGL, setInModule, webGLContextAttributes) {
        if (useWebGL && Module['ctx'] && canvas == Browser.getCanvas()) return Module['ctx']; // no need to recreate GL context if it's already been created for this canvas.
  
        var ctx;
        var contextHandle;
        if (useWebGL) {
          // For GLES2/desktop GL compatibility, adjust a few defaults to be different to WebGL defaults, so that they align better with the desktop defaults.
          var contextAttributes = {
            antialias: false,
            alpha: false,
            majorVersion: 1,
          };
  
          if (webGLContextAttributes) {
            for (var attribute in webGLContextAttributes) {
              contextAttributes[attribute] = webGLContextAttributes[attribute];
            }
          }
  
          // This check of existence of GL is here to satisfy Closure compiler, which yells if variable GL is referenced below but GL object is not
          // actually compiled in because application is not doing any GL operations. TODO: Ideally if GL is not being used, this function
          // Browser.createContext() should not even be emitted.
          if (typeof GL != 'undefined') {
            contextHandle = GL.createContext(canvas, contextAttributes);
            if (contextHandle) {
              ctx = GL.getContext(contextHandle).GLctx;
            }
          }
        } else {
          ctx = canvas.getContext('2d');
        }
  
        if (!ctx) return null;
  
        if (setInModule) {
          if (!useWebGL) assert(typeof GLctx == 'undefined', 'cannot set in module if GLctx is used, but we are a non-GL context that would replace it');
          Module['ctx'] = ctx;
          if (useWebGL) GL.makeContextCurrent(contextHandle);
          Browser.useWebGL = useWebGL;
          Browser.moduleContextCreatedCallbacks.forEach((callback) => callback());
          Browser.init();
        }
        return ctx;
      },
  fullscreenHandlersInstalled:false,
  lockPointer:undefined,
  resizeCanvas:undefined,
  requestFullscreen(lockPointer, resizeCanvas) {
        Browser.lockPointer = lockPointer;
        Browser.resizeCanvas = resizeCanvas;
        if (typeof Browser.lockPointer == 'undefined') Browser.lockPointer = true;
        if (typeof Browser.resizeCanvas == 'undefined') Browser.resizeCanvas = false;
  
        var canvas = Browser.getCanvas();
        function fullscreenChange() {
          Browser.isFullscreen = false;
          var canvasContainer = canvas.parentNode;
          if ((document['fullscreenElement'] || document['mozFullScreenElement'] ||
               document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
               document['webkitCurrentFullScreenElement']) === canvasContainer) {
            canvas.exitFullscreen = Browser.exitFullscreen;
            if (Browser.lockPointer) canvas.requestPointerLock();
            Browser.isFullscreen = true;
            if (Browser.resizeCanvas) {
              Browser.setFullscreenCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
            }
          } else {
            // remove the full screen specific parent of the canvas again to restore the HTML structure from before going full screen
            canvasContainer.parentNode.insertBefore(canvas, canvasContainer);
            canvasContainer.parentNode.removeChild(canvasContainer);
  
            if (Browser.resizeCanvas) {
              Browser.setWindowedCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
            }
          }
          Module['onFullScreen']?.(Browser.isFullscreen);
          Module['onFullscreen']?.(Browser.isFullscreen);
        }
  
        if (!Browser.fullscreenHandlersInstalled) {
          Browser.fullscreenHandlersInstalled = true;
          document.addEventListener('fullscreenchange', fullscreenChange, false);
          document.addEventListener('mozfullscreenchange', fullscreenChange, false);
          document.addEventListener('webkitfullscreenchange', fullscreenChange, false);
          document.addEventListener('MSFullscreenChange', fullscreenChange, false);
        }
  
        // create a new parent to ensure the canvas has no siblings. this allows browsers to optimize full screen performance when its parent is the full screen root
        var canvasContainer = document.createElement("div");
        canvas.parentNode.insertBefore(canvasContainer, canvas);
        canvasContainer.appendChild(canvas);
  
        // use parent of canvas as full screen root to allow aspect ratio correction (Firefox stretches the root to screen size)
        canvasContainer.requestFullscreen = canvasContainer['requestFullscreen'] ||
                                            canvasContainer['mozRequestFullScreen'] ||
                                            canvasContainer['msRequestFullscreen'] ||
                                           (canvasContainer['webkitRequestFullscreen'] ? () => canvasContainer['webkitRequestFullscreen'](Element['ALLOW_KEYBOARD_INPUT']) : null) ||
                                           (canvasContainer['webkitRequestFullScreen'] ? () => canvasContainer['webkitRequestFullScreen'](Element['ALLOW_KEYBOARD_INPUT']) : null);
  
        canvasContainer.requestFullscreen();
      },
  requestFullScreen() {
        abort('Module.requestFullScreen has been replaced by Module.requestFullscreen (without a capital S)');
      },
  exitFullscreen() {
        // This is workaround for chrome. Trying to exit from fullscreen
        // not in fullscreen state will cause "TypeError: Document not active"
        // in chrome. See https://github.com/emscripten-core/emscripten/pull/8236
        if (!Browser.isFullscreen) {
          return false;
        }
  
        var CFS = document['exitFullscreen'] ||
                  document['cancelFullScreen'] ||
                  document['mozCancelFullScreen'] ||
                  document['msExitFullscreen'] ||
                  document['webkitCancelFullScreen'] ||
            (() => {});
        CFS.apply(document, []);
        return true;
      },
  safeSetTimeout(func, timeout) {
        // Legacy function, this is used by the SDL2 port so we need to keep it
        // around at least until that is updated.
        // See https://github.com/libsdl-org/SDL/pull/6304
        return safeSetTimeout(func, timeout);
      },
  getMimetype(name) {
        return {
          'jpg': 'image/jpeg',
          'jpeg': 'image/jpeg',
          'png': 'image/png',
          'bmp': 'image/bmp',
          'ogg': 'audio/ogg',
          'wav': 'audio/wav',
          'mp3': 'audio/mpeg'
        }[name.slice(name.lastIndexOf('.')+1)];
      },
  getUserMedia(func) {
        window.getUserMedia ||= navigator['getUserMedia'] ||
                                navigator['mozGetUserMedia'];
        window.getUserMedia(func);
      },
  getMovementX(event) {
        return event['movementX'] ||
               event['mozMovementX'] ||
               event['webkitMovementX'] ||
               0;
      },
  getMovementY(event) {
        return event['movementY'] ||
               event['mozMovementY'] ||
               event['webkitMovementY'] ||
               0;
      },
  getMouseWheelDelta(event) {
        var delta = 0;
        switch (event.type) {
          case 'DOMMouseScroll':
            // 3 lines make up a step
            delta = event.detail / 3;
            break;
          case 'mousewheel':
            // 120 units make up a step
            delta = event.wheelDelta / 120;
            break;
          case 'wheel':
            delta = event.deltaY
            switch (event.deltaMode) {
              case 0:
                // DOM_DELTA_PIXEL: 100 pixels make up a step
                delta /= 100;
                break;
              case 1:
                // DOM_DELTA_LINE: 3 lines make up a step
                delta /= 3;
                break;
              case 2:
                // DOM_DELTA_PAGE: A page makes up 80 steps
                delta *= 80;
                break;
              default:
                throw 'unrecognized mouse wheel delta mode: ' + event.deltaMode;
            }
            break;
          default:
            throw 'unrecognized mouse wheel event: ' + event.type;
        }
        return delta;
      },
  mouseX:0,
  mouseY:0,
  mouseMovementX:0,
  mouseMovementY:0,
  touches:{
  },
  lastTouches:{
  },
  calculateMouseCoords(pageX, pageY) {
        // Calculate the movement based on the changes
        // in the coordinates.
        var canvas = Browser.getCanvas();
        var rect = canvas.getBoundingClientRect();
  
        // Neither .scrollX or .pageXOffset are defined in a spec, but
        // we prefer .scrollX because it is currently in a spec draft.
        // (see: http://www.w3.org/TR/2013/WD-cssom-view-20131217/)
        var scrollX = ((typeof window.scrollX != 'undefined') ? window.scrollX : window.pageXOffset);
        var scrollY = ((typeof window.scrollY != 'undefined') ? window.scrollY : window.pageYOffset);
        // If this assert lands, it's likely because the browser doesn't support scrollX or pageXOffset
        // and we have no viable fallback.
        assert((typeof scrollX != 'undefined') && (typeof scrollY != 'undefined'), 'Unable to retrieve scroll position, mouse positions likely broken.');
        var adjustedX = pageX - (scrollX + rect.left);
        var adjustedY = pageY - (scrollY + rect.top);
  
        // the canvas might be CSS-scaled compared to its backbuffer;
        // SDL-using content will want mouse coordinates in terms
        // of backbuffer units.
        adjustedX = adjustedX * (canvas.width / rect.width);
        adjustedY = adjustedY * (canvas.height / rect.height);
  
        return { x: adjustedX, y: adjustedY };
      },
  setMouseCoords(pageX, pageY) {
        const {x, y} = Browser.calculateMouseCoords(pageX, pageY);
        Browser.mouseMovementX = x - Browser.mouseX;
        Browser.mouseMovementY = y - Browser.mouseY;
        Browser.mouseX = x;
        Browser.mouseY = y;
      },
  calculateMouseEvent(event) { // event should be mousemove, mousedown or mouseup
        if (Browser.pointerLock) {
          // When the pointer is locked, calculate the coordinates
          // based on the movement of the mouse.
          // Workaround for Firefox bug 764498
          if (event.type != 'mousemove' &&
              ('mozMovementX' in event)) {
            Browser.mouseMovementX = Browser.mouseMovementY = 0;
          } else {
            Browser.mouseMovementX = Browser.getMovementX(event);
            Browser.mouseMovementY = Browser.getMovementY(event);
          }
  
          // add the mouse delta to the current absolute mouse position
          Browser.mouseX += Browser.mouseMovementX;
          Browser.mouseY += Browser.mouseMovementY;
        } else {
          if (event.type === 'touchstart' || event.type === 'touchend' || event.type === 'touchmove') {
            var touch = event.touch;
            if (touch === undefined) {
              return; // the "touch" property is only defined in SDL
  
            }
            var coords = Browser.calculateMouseCoords(touch.pageX, touch.pageY);
  
            if (event.type === 'touchstart') {
              Browser.lastTouches[touch.identifier] = coords;
              Browser.touches[touch.identifier] = coords;
            } else if (event.type === 'touchend' || event.type === 'touchmove') {
              var last = Browser.touches[touch.identifier];
              last ||= coords;
              Browser.lastTouches[touch.identifier] = last;
              Browser.touches[touch.identifier] = coords;
            }
            return;
          }
  
          Browser.setMouseCoords(event.pageX, event.pageY);
        }
      },
  resizeListeners:[],
  updateResizeListeners() {
        var canvas = Browser.getCanvas();
        Browser.resizeListeners.forEach((listener) => listener(canvas.width, canvas.height));
      },
  setCanvasSize(width, height, noUpdates) {
        var canvas = Browser.getCanvas();
        Browser.updateCanvasDimensions(canvas, width, height);
        if (!noUpdates) Browser.updateResizeListeners();
      },
  windowedWidth:0,
  windowedHeight:0,
  setFullscreenCanvasSize() {
        // check if SDL is available
        if (typeof SDL != "undefined") {
          var flags = HEAPU32[((SDL.screen)>>2)];
          flags = flags | 0x00800000; // set SDL_FULLSCREEN flag
          HEAP32[((SDL.screen)>>2)] = flags;
        }
        Browser.updateCanvasDimensions(Browser.getCanvas());
        Browser.updateResizeListeners();
      },
  setWindowedCanvasSize() {
        // check if SDL is available
        if (typeof SDL != "undefined") {
          var flags = HEAPU32[((SDL.screen)>>2)];
          flags = flags & ~0x00800000; // clear SDL_FULLSCREEN flag
          HEAP32[((SDL.screen)>>2)] = flags;
        }
        Browser.updateCanvasDimensions(Browser.getCanvas());
        Browser.updateResizeListeners();
      },
  updateCanvasDimensions(canvas, wNative, hNative) {
        if (wNative && hNative) {
          canvas.widthNative = wNative;
          canvas.heightNative = hNative;
        } else {
          wNative = canvas.widthNative;
          hNative = canvas.heightNative;
        }
        var w = wNative;
        var h = hNative;
        if (Module['forcedAspectRatio'] > 0) {
          if (w/h < Module['forcedAspectRatio']) {
            w = Math.round(h * Module['forcedAspectRatio']);
          } else {
            h = Math.round(w / Module['forcedAspectRatio']);
          }
        }
        if (((document['fullscreenElement'] || document['mozFullScreenElement'] ||
             document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
             document['webkitCurrentFullScreenElement']) === canvas.parentNode) && (typeof screen != 'undefined')) {
           var factor = Math.min(screen.width / w, screen.height / h);
           w = Math.round(w * factor);
           h = Math.round(h * factor);
        }
        if (Browser.resizeCanvas) {
          if (canvas.width  != w) canvas.width  = w;
          if (canvas.height != h) canvas.height = h;
          if (typeof canvas.style != 'undefined') {
            canvas.style.removeProperty( "width");
            canvas.style.removeProperty("height");
          }
        } else {
          if (canvas.width  != wNative) canvas.width  = wNative;
          if (canvas.height != hNative) canvas.height = hNative;
          if (typeof canvas.style != 'undefined') {
            if (w != wNative || h != hNative) {
              canvas.style.setProperty( "width", w + "px", "important");
              canvas.style.setProperty("height", h + "px", "important");
            } else {
              canvas.style.removeProperty( "width");
              canvas.style.removeProperty("height");
            }
          }
        }
      },
  };
  
  var _emscripten_set_window_title = (title) => document.title = UTF8ToString(title);


  function _fd_close(fd) {
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      FS.close(stream);
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  }

  /** @param {number=} offset */
  var doReadv = (stream, iov, iovcnt, offset) => {
      var ret = 0;
      for (var i = 0; i < iovcnt; i++) {
        var ptr = HEAPU32[((iov)>>2)];
        var len = HEAPU32[(((iov)+(4))>>2)];
        iov += 8;
        var curr = FS.read(stream, HEAP8, ptr, len, offset);
        if (curr < 0) return -1;
        ret += curr;
        if (curr < len) break; // nothing more to read
        if (typeof offset != 'undefined') {
          offset += curr;
        }
      }
      return ret;
    };
  
  function _fd_read(fd, iov, iovcnt, pnum) {
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = doReadv(stream, iov, iovcnt);
      HEAPU32[((pnum)>>2)] = num;
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  }

  
  function _fd_seek(fd, offset, whence, newOffset) {
    offset = bigintToI53Checked(offset);
  
    
  try {
  
      if (isNaN(offset)) return 61;
      var stream = SYSCALLS.getStreamFromFD(fd);
      FS.llseek(stream, offset, whence);
      HEAP64[((newOffset)>>3)] = BigInt(stream.position);
      if (stream.getdents && offset === 0 && whence === 0) stream.getdents = null; // reset readdir state
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  ;
  }

  /** @param {number=} offset */
  var doWritev = (stream, iov, iovcnt, offset) => {
      var ret = 0;
      for (var i = 0; i < iovcnt; i++) {
        var ptr = HEAPU32[((iov)>>2)];
        var len = HEAPU32[(((iov)+(4))>>2)];
        iov += 8;
        var curr = FS.write(stream, HEAP8, ptr, len, offset);
        if (curr < 0) return -1;
        ret += curr;
        if (curr < len) {
          // No more space to write.
          break;
        }
        if (typeof offset != 'undefined') {
          offset += curr;
        }
      }
      return ret;
    };
  
  function _fd_write(fd, iov, iovcnt, pnum) {
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = doWritev(stream, iov, iovcnt);
      HEAPU32[((pnum)>>2)] = num;
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  }





















































  
  
  
  /** @constructor */
  function GLFW_Window(id, width, height, framebufferWidth, framebufferHeight, title, monitor, share) {
        this.id = id;
        this.x = 0;
        this.y = 0;
        this.fullscreen = false; // Used to determine if app in fullscreen mode
        this.storedX = 0; // Used to store X before fullscreen
        this.storedY = 0; // Used to store Y before fullscreen
        this.width = width;
        this.height = height;
        this.framebufferWidth = framebufferWidth;
        this.framebufferHeight = framebufferHeight;
        this.storedWidth = width; // Used to store width before fullscreen
        this.storedHeight = height; // Used to store height before fullscreen
        this.title = title;
        this.monitor = monitor;
        this.share = share;
        this.attributes = Object.assign({}, GLFW.hints);
        this.inputModes = {
          0x00033001:0x00034001, // GLFW_CURSOR (GLFW_CURSOR_NORMAL)
          0x00033002:0, // GLFW_STICKY_KEYS
          0x00033003:0, // GLFW_STICKY_MOUSE_BUTTONS
        };
        this.buttons = 0;
        this.keys = new Array();
        this.domKeys = new Array();
        this.shouldClose = 0;
        this.title = null;
        this.windowPosFunc = 0; // GLFWwindowposfun
        this.windowSizeFunc = 0; // GLFWwindowsizefun
        this.windowCloseFunc = 0; // GLFWwindowclosefun
        this.windowRefreshFunc = 0; // GLFWwindowrefreshfun
        this.windowFocusFunc = 0; // GLFWwindowfocusfun
        this.windowIconifyFunc = 0; // GLFWwindowiconifyfun
        this.windowMaximizeFunc = 0; // GLFWwindowmaximizefun
        this.framebufferSizeFunc = 0; // GLFWframebuffersizefun
        this.windowContentScaleFunc = 0; // GLFWwindowcontentscalefun
        this.mouseButtonFunc = 0; // GLFWmousebuttonfun
        this.cursorPosFunc = 0; // GLFWcursorposfun
        this.cursorEnterFunc = 0; // GLFWcursorenterfun
        this.scrollFunc = 0; // GLFWscrollfun
        this.dropFunc = 0; // GLFWdropfun
        this.keyFunc = 0; // GLFWkeyfun
        this.charFunc = 0; // GLFWcharfun
        this.userptr = 0;
      }
  
  
  
  
  
  
  var GLFW = {
  WindowFromId:(id) => {
        if (id <= 0 || !GLFW.windows) return null;
        return GLFW.windows[id - 1];
      },
  joystickFunc:0,
  errorFunc:0,
  monitorFunc:0,
  active:null,
  scale:null,
  windows:null,
  monitors:null,
  monitorString:null,
  versionString:null,
  initialTime:null,
  extensions:null,
  devicePixelRatioMQL:null,
  hints:null,
  primaryTouchId:null,
  defaultHints:{
  131073:0,
  131074:0,
  131075:1,
  131076:1,
  131077:1,
  131082:0,
  135169:8,
  135170:8,
  135171:8,
  135172:8,
  135173:24,
  135174:8,
  135175:0,
  135176:0,
  135177:0,
  135178:0,
  135179:0,
  135180:0,
  135181:0,
  135182:0,
  135183:0,
  139265:196609,
  139266:1,
  139267:0,
  139268:0,
  139269:0,
  139270:0,
  139271:0,
  139272:0,
  139276:0,
  },
  DOMToGLFWKeyCode:(keycode) => {
        switch (keycode) {
          // these keycodes are only defined for GLFW3, assume they are the same for GLFW2
          case 0x20:return 32; // DOM_VK_SPACE -> GLFW_KEY_SPACE
          case 0xDE:return 39; // DOM_VK_QUOTE -> GLFW_KEY_APOSTROPHE
          case 0xBC:return 44; // DOM_VK_COMMA -> GLFW_KEY_COMMA
          case 0xAD:return 45; // DOM_VK_HYPHEN_MINUS -> GLFW_KEY_MINUS
          case 0xBD:return 45; // DOM_VK_MINUS -> GLFW_KEY_MINUS
          case 0xBE:return 46; // DOM_VK_PERIOD -> GLFW_KEY_PERIOD
          case 0xBF:return 47; // DOM_VK_SLASH -> GLFW_KEY_SLASH
          case 0x30:return 48; // DOM_VK_0 -> GLFW_KEY_0
          case 0x31:return 49; // DOM_VK_1 -> GLFW_KEY_1
          case 0x32:return 50; // DOM_VK_2 -> GLFW_KEY_2
          case 0x33:return 51; // DOM_VK_3 -> GLFW_KEY_3
          case 0x34:return 52; // DOM_VK_4 -> GLFW_KEY_4
          case 0x35:return 53; // DOM_VK_5 -> GLFW_KEY_5
          case 0x36:return 54; // DOM_VK_6 -> GLFW_KEY_6
          case 0x37:return 55; // DOM_VK_7 -> GLFW_KEY_7
          case 0x38:return 56; // DOM_VK_8 -> GLFW_KEY_8
          case 0x39:return 57; // DOM_VK_9 -> GLFW_KEY_9
          case 0x3B:return 59; // DOM_VK_SEMICOLON -> GLFW_KEY_SEMICOLON
          case 0x3D:return 61; // DOM_VK_EQUALS -> GLFW_KEY_EQUAL
          case 0xBB:return 61; // DOM_VK_EQUALS -> GLFW_KEY_EQUAL
          case 0x41:return 65; // DOM_VK_A -> GLFW_KEY_A
          case 0x42:return 66; // DOM_VK_B -> GLFW_KEY_B
          case 0x43:return 67; // DOM_VK_C -> GLFW_KEY_C
          case 0x44:return 68; // DOM_VK_D -> GLFW_KEY_D
          case 0x45:return 69; // DOM_VK_E -> GLFW_KEY_E
          case 0x46:return 70; // DOM_VK_F -> GLFW_KEY_F
          case 0x47:return 71; // DOM_VK_G -> GLFW_KEY_G
          case 0x48:return 72; // DOM_VK_H -> GLFW_KEY_H
          case 0x49:return 73; // DOM_VK_I -> GLFW_KEY_I
          case 0x4A:return 74; // DOM_VK_J -> GLFW_KEY_J
          case 0x4B:return 75; // DOM_VK_K -> GLFW_KEY_K
          case 0x4C:return 76; // DOM_VK_L -> GLFW_KEY_L
          case 0x4D:return 77; // DOM_VK_M -> GLFW_KEY_M
          case 0x4E:return 78; // DOM_VK_N -> GLFW_KEY_N
          case 0x4F:return 79; // DOM_VK_O -> GLFW_KEY_O
          case 0x50:return 80; // DOM_VK_P -> GLFW_KEY_P
          case 0x51:return 81; // DOM_VK_Q -> GLFW_KEY_Q
          case 0x52:return 82; // DOM_VK_R -> GLFW_KEY_R
          case 0x53:return 83; // DOM_VK_S -> GLFW_KEY_S
          case 0x54:return 84; // DOM_VK_T -> GLFW_KEY_T
          case 0x55:return 85; // DOM_VK_U -> GLFW_KEY_U
          case 0x56:return 86; // DOM_VK_V -> GLFW_KEY_V
          case 0x57:return 87; // DOM_VK_W -> GLFW_KEY_W
          case 0x58:return 88; // DOM_VK_X -> GLFW_KEY_X
          case 0x59:return 89; // DOM_VK_Y -> GLFW_KEY_Y
          case 0x5a:return 90; // DOM_VK_Z -> GLFW_KEY_Z
          case 0xDB:return 91; // DOM_VK_OPEN_BRACKET -> GLFW_KEY_LEFT_BRACKET
          case 0xDC:return 92; // DOM_VK_BACKSLASH -> GLFW_KEY_BACKSLASH
          case 0xDD:return 93; // DOM_VK_CLOSE_BRACKET -> GLFW_KEY_RIGHT_BRACKET
          case 0xC0:return 96; // DOM_VK_BACK_QUOTE -> GLFW_KEY_GRAVE_ACCENT
  
          case 0x1B:return 256; // DOM_VK_ESCAPE -> GLFW_KEY_ESCAPE
          case 0x0D:return 257; // DOM_VK_RETURN -> GLFW_KEY_ENTER
          case 0x09:return 258; // DOM_VK_TAB -> GLFW_KEY_TAB
          case 0x08:return 259; // DOM_VK_BACK -> GLFW_KEY_BACKSPACE
          case 0x2D:return 260; // DOM_VK_INSERT -> GLFW_KEY_INSERT
          case 0x2E:return 261; // DOM_VK_DELETE -> GLFW_KEY_DELETE
          case 0x27:return 262; // DOM_VK_RIGHT -> GLFW_KEY_RIGHT
          case 0x25:return 263; // DOM_VK_LEFT -> GLFW_KEY_LEFT
          case 0x28:return 264; // DOM_VK_DOWN -> GLFW_KEY_DOWN
          case 0x26:return 265; // DOM_VK_UP -> GLFW_KEY_UP
          case 0x21:return 266; // DOM_VK_PAGE_UP -> GLFW_KEY_PAGE_UP
          case 0x22:return 267; // DOM_VK_PAGE_DOWN -> GLFW_KEY_PAGE_DOWN
          case 0x24:return 268; // DOM_VK_HOME -> GLFW_KEY_HOME
          case 0x23:return 269; // DOM_VK_END -> GLFW_KEY_END
          case 0x14:return 280; // DOM_VK_CAPS_LOCK -> GLFW_KEY_CAPS_LOCK
          case 0x91:return 281; // DOM_VK_SCROLL_LOCK -> GLFW_KEY_SCROLL_LOCK
          case 0x90:return 282; // DOM_VK_NUM_LOCK -> GLFW_KEY_NUM_LOCK
          case 0x2C:return 283; // DOM_VK_SNAPSHOT -> GLFW_KEY_PRINT_SCREEN
          case 0x13:return 284; // DOM_VK_PAUSE -> GLFW_KEY_PAUSE
          case 0x70:return 290; // DOM_VK_F1 -> GLFW_KEY_F1
          case 0x71:return 291; // DOM_VK_F2 -> GLFW_KEY_F2
          case 0x72:return 292; // DOM_VK_F3 -> GLFW_KEY_F3
          case 0x73:return 293; // DOM_VK_F4 -> GLFW_KEY_F4
          case 0x74:return 294; // DOM_VK_F5 -> GLFW_KEY_F5
          case 0x75:return 295; // DOM_VK_F6 -> GLFW_KEY_F6
          case 0x76:return 296; // DOM_VK_F7 -> GLFW_KEY_F7
          case 0x77:return 297; // DOM_VK_F8 -> GLFW_KEY_F8
          case 0x78:return 298; // DOM_VK_F9 -> GLFW_KEY_F9
          case 0x79:return 299; // DOM_VK_F10 -> GLFW_KEY_F10
          case 0x7A:return 300; // DOM_VK_F11 -> GLFW_KEY_F11
          case 0x7B:return 301; // DOM_VK_F12 -> GLFW_KEY_F12
          case 0x7C:return 302; // DOM_VK_F13 -> GLFW_KEY_F13
          case 0x7D:return 303; // DOM_VK_F14 -> GLFW_KEY_F14
          case 0x7E:return 304; // DOM_VK_F15 -> GLFW_KEY_F15
          case 0x7F:return 305; // DOM_VK_F16 -> GLFW_KEY_F16
          case 0x80:return 306; // DOM_VK_F17 -> GLFW_KEY_F17
          case 0x81:return 307; // DOM_VK_F18 -> GLFW_KEY_F18
          case 0x82:return 308; // DOM_VK_F19 -> GLFW_KEY_F19
          case 0x83:return 309; // DOM_VK_F20 -> GLFW_KEY_F20
          case 0x84:return 310; // DOM_VK_F21 -> GLFW_KEY_F21
          case 0x85:return 311; // DOM_VK_F22 -> GLFW_KEY_F22
          case 0x86:return 312; // DOM_VK_F23 -> GLFW_KEY_F23
          case 0x87:return 313; // DOM_VK_F24 -> GLFW_KEY_F24
          case 0x88:return 314; // 0x88 (not used?) -> GLFW_KEY_F25
          case 0x60:return 320; // DOM_VK_NUMPAD0 -> GLFW_KEY_KP_0
          case 0x61:return 321; // DOM_VK_NUMPAD1 -> GLFW_KEY_KP_1
          case 0x62:return 322; // DOM_VK_NUMPAD2 -> GLFW_KEY_KP_2
          case 0x63:return 323; // DOM_VK_NUMPAD3 -> GLFW_KEY_KP_3
          case 0x64:return 324; // DOM_VK_NUMPAD4 -> GLFW_KEY_KP_4
          case 0x65:return 325; // DOM_VK_NUMPAD5 -> GLFW_KEY_KP_5
          case 0x66:return 326; // DOM_VK_NUMPAD6 -> GLFW_KEY_KP_6
          case 0x67:return 327; // DOM_VK_NUMPAD7 -> GLFW_KEY_KP_7
          case 0x68:return 328; // DOM_VK_NUMPAD8 -> GLFW_KEY_KP_8
          case 0x69:return 329; // DOM_VK_NUMPAD9 -> GLFW_KEY_KP_9
          case 0x6E:return 330; // DOM_VK_DECIMAL -> GLFW_KEY_KP_DECIMAL
          case 0x6F:return 331; // DOM_VK_DIVIDE -> GLFW_KEY_KP_DIVIDE
          case 0x6A:return 332; // DOM_VK_MULTIPLY -> GLFW_KEY_KP_MULTIPLY
          case 0x6D:return 333; // DOM_VK_SUBTRACT -> GLFW_KEY_KP_SUBTRACT
          case 0x6B:return 334; // DOM_VK_ADD -> GLFW_KEY_KP_ADD
          // case 0x0D:return 335; // DOM_VK_RETURN -> GLFW_KEY_KP_ENTER (DOM_KEY_LOCATION_RIGHT)
          // case 0x61:return 336; // DOM_VK_EQUALS -> GLFW_KEY_KP_EQUAL (DOM_KEY_LOCATION_RIGHT)
          case 0x10:return 340; // DOM_VK_SHIFT -> GLFW_KEY_LEFT_SHIFT
          case 0x11:return 341; // DOM_VK_CONTROL -> GLFW_KEY_LEFT_CONTROL
          case 0x12:return 342; // DOM_VK_ALT -> GLFW_KEY_LEFT_ALT
          case 0x5B:return 343; // DOM_VK_WIN -> GLFW_KEY_LEFT_SUPER
          case 0xE0:return 343; // DOM_VK_META -> GLFW_KEY_LEFT_SUPER
          // case 0x10:return 344; // DOM_VK_SHIFT -> GLFW_KEY_RIGHT_SHIFT (DOM_KEY_LOCATION_RIGHT)
          // case 0x11:return 345; // DOM_VK_CONTROL -> GLFW_KEY_RIGHT_CONTROL (DOM_KEY_LOCATION_RIGHT)
          // case 0x12:return 346; // DOM_VK_ALT -> GLFW_KEY_RIGHT_ALT (DOM_KEY_LOCATION_RIGHT)
          // case 0x5B:return 347; // DOM_VK_WIN -> GLFW_KEY_RIGHT_SUPER (DOM_KEY_LOCATION_RIGHT)
          case 0x5D:return 348; // DOM_VK_CONTEXT_MENU -> GLFW_KEY_MENU
          // XXX: GLFW_KEY_WORLD_1, GLFW_KEY_WORLD_2 what are these?
          default:return -1; // GLFW_KEY_UNKNOWN
        };
      },
  getModBits:(win) => {
        var mod = 0;
        if (win.keys[340]) mod |= 0x0001; // GLFW_MOD_SHIFT
        if (win.keys[341]) mod |= 0x0002; // GLFW_MOD_CONTROL
        if (win.keys[342]) mod |= 0x0004; // GLFW_MOD_ALT
        if (win.keys[343] || win.keys[348]) mod |= 0x0008; // GLFW_MOD_SUPER
        // add caps and num lock keys? only if lock_key_mod is set
        return mod;
      },
  onKeyPress:(event) => {
        if (!GLFW.active || !GLFW.active.charFunc) return;
        if (event.ctrlKey || event.metaKey) return;
  
        // correct unicode charCode is only available with onKeyPress event
        var charCode = event.charCode;
        if (charCode == 0 || (charCode >= 0x00 && charCode <= 0x1F)) return;
  
        getWasmTableEntry(GLFW.active.charFunc)(GLFW.active.id, charCode);
      },
  onKeyChanged:(keyCode, status) => {
        if (!GLFW.active) return;
  
        var key = GLFW.DOMToGLFWKeyCode(keyCode);
        if (key == -1) return;
  
        var repeat = status && GLFW.active.keys[key];
        GLFW.active.keys[key] = status;
        GLFW.active.domKeys[keyCode] = status;
  
        if (GLFW.active.keyFunc) {
          if (repeat) status = 2; // GLFW_REPEAT
          getWasmTableEntry(GLFW.active.keyFunc)(GLFW.active.id, key, keyCode, status, GLFW.getModBits(GLFW.active));
        }
      },
  onGamepadConnected:(event) => {
        GLFW.refreshJoysticks();
      },
  onGamepadDisconnected:(event) => {
        GLFW.refreshJoysticks();
      },
  onKeydown:(event) => {
        GLFW.onKeyChanged(event.keyCode, 1); // GLFW_PRESS or GLFW_REPEAT
  
        // This logic comes directly from the sdl implementation. We cannot
        // call preventDefault on all keydown events otherwise onKeyPress will
        // not get called
        if (event.key == 'Backspace' || event.key == 'Tab') {
          event.preventDefault();
        }
      },
  onKeyup:(event) => {
        GLFW.onKeyChanged(event.keyCode, 0); // GLFW_RELEASE
      },
  onBlur:(event) => {
        if (!GLFW.active) return;
  
        for (var i = 0; i < GLFW.active.domKeys.length; ++i) {
          if (GLFW.active.domKeys[i]) {
            GLFW.onKeyChanged(i, 0); // GLFW_RELEASE
          }
        }
      },
  onMousemove:(event) => {
        if (!GLFW.active) return;
  
        if (event.type === 'touchmove') {
          // Handling for touch events that are being converted to mouse input.
  
          // Don't let the browser fire a duplicate mouse event.
          event.preventDefault();
  
          let primaryChanged = false;
          for (let i of event.changedTouches) {
            // If our chosen primary touch moved, update Browser mouse coords
            if (GLFW.primaryTouchId === i.identifier) {
              Browser.setMouseCoords(i.pageX, i.pageY);
              primaryChanged = true;
              break;
            }
          }
  
          if (!primaryChanged) {
            // Do not send mouse events if some touch other than the primary triggered this.
            return;
          }
  
        } else {
          // Handling for non-touch mouse input events.
          Browser.calculateMouseEvent(event);
        }
  
        if (event.target != Browser.getCanvas() || !GLFW.active.cursorPosFunc) return;
  
        if (GLFW.active.cursorPosFunc) {
          getWasmTableEntry(GLFW.active.cursorPosFunc)(GLFW.active.id, Browser.mouseX, Browser.mouseY);
        }
      },
  DOMToGLFWMouseButton:(event) => {
        // DOM and glfw have different button codes.
        // See http://www.w3schools.com/jsref/event_button.asp.
        var eventButton = event['button'];
        if (eventButton > 0) {
          if (eventButton == 1) {
            eventButton = 2;
          } else {
            eventButton = 1;
          }
        }
        return eventButton;
      },
  onMouseenter:(event) => {
        if (!GLFW.active) return;
  
        if (event.target != Browser.getCanvas()) return;
  
        if (GLFW.active.cursorEnterFunc) {
          getWasmTableEntry(GLFW.active.cursorEnterFunc)(GLFW.active.id, 1);
        }
      },
  onMouseleave:(event) => {
        if (!GLFW.active) return;
  
        if (event.target != Browser.getCanvas()) return;
  
        if (GLFW.active.cursorEnterFunc) {
          getWasmTableEntry(GLFW.active.cursorEnterFunc)(GLFW.active.id, 0);
        }
      },
  onMouseButtonChanged:(event, status) => {
        if (!GLFW.active) return;
  
        if (event.target != Browser.getCanvas()) return;
  
        // Is this from a touch event?
        const isTouchType = event.type === 'touchstart' || event.type === 'touchend' || event.type === 'touchcancel';
  
        // Only emulating mouse left-click behavior for touches.
        let eventButton = 0;
        if (isTouchType) {
          // Handling for touch events that are being converted to mouse input.
  
          // Don't let the browser fire a duplicate mouse event.
          event.preventDefault();
  
          let primaryChanged = false;
  
          // Set a primary touch if we have none.
          if (GLFW.primaryTouchId === null && event.type === 'touchstart' && event.targetTouches.length > 0) {
            // Pick the first touch that started in the canvas and treat it as primary.
            const chosenTouch = event.targetTouches[0];
            GLFW.primaryTouchId = chosenTouch.identifier;
  
            Browser.setMouseCoords(chosenTouch.pageX, chosenTouch.pageY);
            primaryChanged = true;
          } else if (event.type === 'touchend' || event.type === 'touchcancel') {
            // Clear the primary touch if it ended.
            for (let i of event.changedTouches) {
              // If our chosen primary touch ended, remove it.
              if (GLFW.primaryTouchId === i.identifier) {
                GLFW.primaryTouchId = null;
                primaryChanged = true;
                break;
              }
            }
          }
  
          if (!primaryChanged) {
            // Do not send mouse events if some touch other than the primary triggered this.
            return;
          }
  
        } else {
          // Handling for non-touch mouse input events.
          Browser.calculateMouseEvent(event);
          eventButton = GLFW.DOMToGLFWMouseButton(event);
        }
  
        if (status == 1) { // GLFW_PRESS
          GLFW.active.buttons |= (1 << eventButton);
          try {
            event.target.setCapture();
          } catch (e) {}
        } else {  // GLFW_RELEASE
          GLFW.active.buttons &= ~(1 << eventButton);
        }
  
        // Send mouse event to GLFW.
        if (GLFW.active.mouseButtonFunc) {
          getWasmTableEntry(GLFW.active.mouseButtonFunc)(GLFW.active.id, eventButton, status, GLFW.getModBits(GLFW.active));
        }
      },
  onMouseButtonDown:(event) => {
        if (!GLFW.active) return;
        GLFW.onMouseButtonChanged(event, 1); // GLFW_PRESS
      },
  onMouseButtonUp:(event) => {
        if (!GLFW.active) return;
        GLFW.onMouseButtonChanged(event, 0); // GLFW_RELEASE
      },
  onMouseWheel:(event) => {
        // Note the minus sign that flips browser wheel direction (positive direction scrolls page down) to native wheel direction (positive direction is mouse wheel up)
        var delta = -Browser.getMouseWheelDelta(event);
        delta = (delta == 0) ? 0 : (delta > 0 ? Math.max(delta, 1) : Math.min(delta, -1)); // Quantize to integer so that minimum scroll is at least +/- 1.
        GLFW.wheelPos += delta;
  
        if (!GLFW.active || !GLFW.active.scrollFunc || event.target != Browser.getCanvas()) return;
        var sx = 0;
        var sy = delta;
        if (event.type == 'mousewheel') {
          sx = event.wheelDeltaX;
        } else {
          sx = event.deltaX;
        }
  
        getWasmTableEntry(GLFW.active.scrollFunc)(GLFW.active.id, sx, sy);
  
        event.preventDefault();
      },
  onCanvasResize:(width, height, framebufferWidth, framebufferHeight) => {
        if (!GLFW.active) return;
  
        var resizeNeeded = false;
  
        // If the client is requesting fullscreen mode
        if (document["fullscreen"] || document["fullScreen"] || document["mozFullScreen"] || document["webkitIsFullScreen"]) {
          if (!GLFW.active.fullscreen) {
            resizeNeeded = width != screen.width || height != screen.height;
            GLFW.active.storedX = GLFW.active.x;
            GLFW.active.storedY = GLFW.active.y;
            GLFW.active.storedWidth = GLFW.active.width;
            GLFW.active.storedHeight = GLFW.active.height;
            GLFW.active.x = GLFW.active.y = 0;
            GLFW.active.width = screen.width;
            GLFW.active.height = screen.height;
            GLFW.active.fullscreen = true;
          }
        // If the client is reverting from fullscreen mode
        } else if (GLFW.active.fullscreen == true) {
          resizeNeeded = width != GLFW.active.storedWidth || height != GLFW.active.storedHeight;
          GLFW.active.x = GLFW.active.storedX;
          GLFW.active.y = GLFW.active.storedY;
          GLFW.active.width = GLFW.active.storedWidth;
          GLFW.active.height = GLFW.active.storedHeight;
          GLFW.active.fullscreen = false;
        }
  
        if (resizeNeeded) {
          // width or height is changed (fullscreen / exit fullscreen) which will call this listener back
          // with proper framebufferWidth/framebufferHeight
          Browser.setCanvasSize(GLFW.active.width, GLFW.active.height);
        } else if (GLFW.active.width != width ||
                   GLFW.active.height != height ||
                   GLFW.active.framebufferWidth != framebufferWidth ||
                   GLFW.active.framebufferHeight != framebufferHeight) {
          GLFW.active.width = width;
          GLFW.active.height = height;
          GLFW.active.framebufferWidth = framebufferWidth;
          GLFW.active.framebufferHeight = framebufferHeight;
          GLFW.onWindowSizeChanged();
          GLFW.onFramebufferSizeChanged();
        }
      },
  onWindowSizeChanged:() => {
        if (!GLFW.active) return;
  
        if (GLFW.active.windowSizeFunc) {
          getWasmTableEntry(GLFW.active.windowSizeFunc)(GLFW.active.id, GLFW.active.width, GLFW.active.height);
        }
      },
  onFramebufferSizeChanged:() => {
        if (!GLFW.active) return;
  
        if (GLFW.active.framebufferSizeFunc) {
          getWasmTableEntry(GLFW.active.framebufferSizeFunc)(GLFW.active.id, GLFW.active.framebufferWidth, GLFW.active.framebufferHeight);
        }
      },
  onWindowContentScaleChanged:(scale) => {
        GLFW.scale = scale;
        if (!GLFW.active) return;
  
        if (GLFW.active.windowContentScaleFunc) {
          getWasmTableEntry(GLFW.active.windowContentScaleFunc)(GLFW.active.id, GLFW.scale, GLFW.scale);
        }
      },
  getTime:() => _emscripten_get_now() / 1000,
  setWindowTitle:(winid, title) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        win.title = title;
        if (GLFW.active.id == win.id) {
          _emscripten_set_window_title(title);
        }
      },
  setJoystickCallback:(cbfun) => {
        var prevcbfun = GLFW.joystickFunc;
        GLFW.joystickFunc = cbfun;
        GLFW.refreshJoysticks();
        return prevcbfun;
      },
  joys:{
  },
  lastGamepadState:[],
  lastGamepadStateFrame:null,
  refreshJoysticks:() => {
        // Produce a new Gamepad API sample if we are ticking a new game frame, or if not using emscripten_set_main_loop() at all to drive animation.
        if (MainLoop.currentFrameNumber !== GLFW.lastGamepadStateFrame || !MainLoop.currentFrameNumber) {
          GLFW.lastGamepadState = navigator.getGamepads ? navigator.getGamepads() : (navigator.webkitGetGamepads || []);
          GLFW.lastGamepadStateFrame = MainLoop.currentFrameNumber;
  
          for (var joy = 0; joy < GLFW.lastGamepadState.length; ++joy) {
            var gamepad = GLFW.lastGamepadState[joy];
  
            if (gamepad) {
              if (!GLFW.joys[joy]) {
                out('glfw joystick connected:',joy);
                GLFW.joys[joy] = {
                  id: stringToNewUTF8(gamepad.id),
                  buttonsCount: gamepad.buttons.length,
                  axesCount: gamepad.axes.length,
                  buttons: _malloc(gamepad.buttons.length),
                  axes: _malloc(gamepad.axes.length*4),
                };
  
                if (GLFW.joystickFunc) {
                  getWasmTableEntry(GLFW.joystickFunc)(joy, 0x00040001); // GLFW_CONNECTED
                }
              }
  
              var data = GLFW.joys[joy];
  
              for (var i = 0; i < gamepad.buttons.length;  ++i) {
                HEAP8[data.buttons + i] = gamepad.buttons[i].pressed;
              }
  
              for (var i = 0; i < gamepad.axes.length; ++i) {
                HEAPF32[((data.axes + i*4)>>2)] = gamepad.axes[i];
              }
            } else {
              if (GLFW.joys[joy]) {
                out('glfw joystick disconnected',joy);
  
                if (GLFW.joystickFunc) {
                  getWasmTableEntry(GLFW.joystickFunc)(joy, 0x00040002); // GLFW_DISCONNECTED
                }
  
                _free(GLFW.joys[joy].id);
                _free(GLFW.joys[joy].buttons);
                _free(GLFW.joys[joy].axes);
  
                delete GLFW.joys[joy];
              }
            }
          }
        }
      },
  setKeyCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.keyFunc;
        win.keyFunc = cbfun;
        return prevcbfun;
      },
  setCharCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.charFunc;
        win.charFunc = cbfun;
        return prevcbfun;
      },
  setMouseButtonCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.mouseButtonFunc;
        win.mouseButtonFunc = cbfun;
        return prevcbfun;
      },
  setCursorPosCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.cursorPosFunc;
        win.cursorPosFunc = cbfun;
        return prevcbfun;
      },
  setScrollCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.scrollFunc;
        win.scrollFunc = cbfun;
        return prevcbfun;
      },
  setDropCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.dropFunc;
        win.dropFunc = cbfun;
        return prevcbfun;
      },
  onDrop:(event) => {
        if (!GLFW.active || !GLFW.active.dropFunc) return;
        if (!event.dataTransfer || !event.dataTransfer.files || event.dataTransfer.files.length == 0) return;
  
        event.preventDefault();
  
        var filenames = _malloc(event.dataTransfer.files.length*4);
        var filenamesArray = [];
        var count = event.dataTransfer.files.length;
  
        // Read and save the files to emscripten's FS
        var written = 0;
        var drop_dir = '.glfw_dropped_files';
        FS.createPath('/', drop_dir);
  
        function save(file) {
          var path = '/' + drop_dir + '/' + file.name.replace(/\//g, '_');
          var reader = new FileReader();
          reader.onloadend = (e) => {
            if (reader.readyState != 2) { // not DONE
              ++written;
              out('failed to read dropped file: '+file.name+': '+reader.error);
              return;
            }
  
            var data = e.target.result;
            FS.writeFile(path, new Uint8Array(data));
            if (++written === count) {
              getWasmTableEntry(GLFW.active.dropFunc)(GLFW.active.id, count, filenames);
  
              for (var i = 0; i < filenamesArray.length; ++i) {
                _free(filenamesArray[i]);
              }
              _free(filenames);
            }
          };
          reader.readAsArrayBuffer(file);
  
          var filename = stringToNewUTF8(path);
          filenamesArray.push(filename);
          HEAPU32[((filenames + i*4)>>2)] = filename;
        }
  
        for (var i = 0; i < count; ++i) {
          save(event.dataTransfer.files[i]);
        }
  
        return false;
      },
  onDragover:(event) => {
        if (!GLFW.active || !GLFW.active.dropFunc) return;
  
        event.preventDefault();
        return false;
      },
  setWindowSizeCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.windowSizeFunc;
        win.windowSizeFunc = cbfun;
  
        return prevcbfun;
      },
  setWindowCloseCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.windowCloseFunc;
        win.windowCloseFunc = cbfun;
        return prevcbfun;
      },
  setWindowRefreshCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.windowRefreshFunc;
        win.windowRefreshFunc = cbfun;
        return prevcbfun;
      },
  onClickRequestPointerLock:(e) => {
        var canvas = Browser.getCanvas();
        if (!Browser.pointerLock && canvas.requestPointerLock) {
          canvas.requestPointerLock();
          e.preventDefault();
        }
      },
  setInputMode:(winid, mode, value) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        switch (mode) {
          case 0x00033001: { // GLFW_CURSOR
            var canvas = Browser.getCanvas();
            switch (value) {
              case 0x00034001: { // GLFW_CURSOR_NORMAL
                win.inputModes[mode] = value;
                canvas.removeEventListener('click', GLFW.onClickRequestPointerLock, true);
                canvas.exitPointerLock();
                break;
              }
              case 0x00034002: { // GLFW_CURSOR_HIDDEN
                err('glfwSetInputMode called with GLFW_CURSOR_HIDDEN value not implemented');
                break;
              }
              case 0x00034003: { // GLFW_CURSOR_DISABLED
                win.inputModes[mode] = value;
                canvas.addEventListener('click', GLFW.onClickRequestPointerLock, true);
                canvas.requestPointerLock();
                break;
              }
              default: {
                err(`glfwSetInputMode called with unknown value parameter value: ${value}`);
                break;
              }
            }
            break;
          }
          case 0x00033002: { // GLFW_STICKY_KEYS
            err('glfwSetInputMode called with GLFW_STICKY_KEYS mode not implemented');
            break;
          }
          case 0x00033003: { // GLFW_STICKY_MOUSE_BUTTONS
            err('glfwSetInputMode called with GLFW_STICKY_MOUSE_BUTTONS mode not implemented');
            break;
          }
          case 0x00033004: { // GLFW_LOCK_KEY_MODS
            err('glfwSetInputMode called with GLFW_LOCK_KEY_MODS mode not implemented');
            break;
          }
          case 0x000330005: { // GLFW_RAW_MOUSE_MOTION
            err('glfwSetInputMode called with GLFW_RAW_MOUSE_MOTION mode not implemented');
            break;
          }
          default: {
            err(`glfwSetInputMode called with unknown mode parameter value: ${mode}`);
            break;
          }
        }
      },
  getKey:(winid, key) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return 0;
        return win.keys[key];
      },
  getMouseButton:(winid, button) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return 0;
        return (win.buttons & (1 << button)) > 0;
      },
  getCursorPos:(winid, x, y) => {
        HEAPF64[((x)>>3)] = Browser.mouseX;
        HEAPF64[((y)>>3)] = Browser.mouseY;
      },
  getMousePos:(winid, x, y) => {
        HEAP32[((x)>>2)] = Browser.mouseX;
        HEAP32[((y)>>2)] = Browser.mouseY;
      },
  setCursorPos:(winid, x, y) => {
      },
  getWindowPos:(winid, x, y) => {
        var wx = 0;
        var wy = 0;
  
        var win = GLFW.WindowFromId(winid);
        if (win) {
          wx = win.x;
          wy = win.y;
        }
  
        if (x) {
          HEAP32[((x)>>2)] = wx;
        }
  
        if (y) {
          HEAP32[((y)>>2)] = wy;
        }
      },
  setWindowPos:(winid, x, y) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
        win.x = x;
        win.y = y;
      },
  getWindowSize:(winid, width, height) => {
        var ww = 0;
        var wh = 0;
  
        var win = GLFW.WindowFromId(winid);
        if (win) {
          ww = win.width;
          wh = win.height;
        }
  
        if (width) {
          HEAP32[((width)>>2)] = ww;
        }
  
        if (height) {
          HEAP32[((height)>>2)] = wh;
        }
      },
  setWindowSize:(winid, width, height) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        if (GLFW.active.id == win.id) {
          Browser.setCanvasSize(width, height); // triggers the listener (onCanvasResize) + windowSizeFunc
        }
      },
  defaultWindowHints:() => {
        GLFW.hints = Object.assign({}, GLFW.defaultHints);
      },
  createWindow:(width, height, title, monitor, share) => {
        var i, id;
        for (i = 0; i < GLFW.windows.length && GLFW.windows[i] !== null; i++) {
          // no-op
        }
        if (i > 0) throw "glfwCreateWindow only supports one window at time currently";
  
        // id for window
        id = i + 1;
  
        // not valid
        if (width <= 0 || height <= 0) return 0;
  
        if (monitor) {
          Browser.requestFullscreen();
        } else {
          Browser.setCanvasSize(width, height);
        }
  
        // Create context when there are no existing alive windows
        for (i = 0; i < GLFW.windows.length && GLFW.windows[i] == null; i++) {
          // no-op
        }
  
        const canvas = Browser.getCanvas();
  
        var useWebGL = GLFW.hints[0x00022001] > 0; // Use WebGL when we are told to based on GLFW_CLIENT_API
        if (i == GLFW.windows.length) {
          if (useWebGL) {
            var contextAttributes = {
              antialias: (GLFW.hints[0x0002100D] > 1), // GLFW_SAMPLES
              depth: (GLFW.hints[0x00021005] > 0),     // GLFW_DEPTH_BITS
              stencil: (GLFW.hints[0x00021006] > 0),   // GLFW_STENCIL_BITS
              alpha: (GLFW.hints[0x00021004] > 0)      // GLFW_ALPHA_BITS
            }
            Browser.createContext(canvas, /*useWebGL=*/true, /*setInModule=*/true, contextAttributes);
          } else {
            Browser.init();
          }
        }
  
        // If context creation failed, do not return a valid window
        if (!Module['ctx'] && useWebGL) return 0;
  
        // Initializes the framebuffer size from the canvas
        var win = new GLFW_Window(id, width, height, canvas.width, canvas.height, title, monitor, share);
  
        // Set window to array
        if (id - 1 == GLFW.windows.length) {
          GLFW.windows.push(win);
        } else {
          GLFW.windows[id - 1] = win;
        }
  
        GLFW.active = win;
        GLFW.adjustCanvasDimensions();
        return win.id;
      },
  destroyWindow:(winid) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        if (win.windowCloseFunc) {
          getWasmTableEntry(win.windowCloseFunc)(win.id);
        }
  
        GLFW.windows[win.id - 1] = null;
        if (GLFW.active.id == win.id)
          GLFW.active = null;
  
        // Destroy context when no alive windows
        for (var i = 0; i < GLFW.windows.length; i++)
          if (GLFW.windows[i] !== null) return;
  
        delete Module['ctx'];
      },
  swapBuffers:(winid) => {
      },
  requestFullscreen(lockPointer, resizeCanvas) {
        Browser.lockPointer = lockPointer;
        Browser.resizeCanvas = resizeCanvas;
        if (typeof Browser.lockPointer == 'undefined') Browser.lockPointer = true;
        if (typeof Browser.resizeCanvas == 'undefined') Browser.resizeCanvas = false;
  
        var canvas = Browser.getCanvas();
        function fullscreenChange() {
          Browser.isFullscreen = false;
          var canvasContainer = canvas.parentNode;
          if ((document['fullscreenElement'] || document['mozFullScreenElement'] ||
            document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
            document['webkitCurrentFullScreenElement']) === canvasContainer) {
            canvas.exitFullscreen = Browser.exitFullscreen;
            if (Browser.lockPointer) canvas.requestPointerLock();
            Browser.isFullscreen = true;
            if (Browser.resizeCanvas) {
              Browser.setFullscreenCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
              Browser.updateResizeListeners();
            }
          } else {
            // remove the full screen specific parent of the canvas again to restore the HTML structure from before going full screen
            canvasContainer.parentNode.insertBefore(canvas, canvasContainer);
            canvasContainer.parentNode.removeChild(canvasContainer);
  
            if (Browser.resizeCanvas) {
              Browser.setWindowedCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
              Browser.updateResizeListeners();
            }
          }
          Module['onFullScreen']?.(Browser.isFullscreen);
          Module['onFullscreen']?.(Browser.isFullscreen);
        }
  
        if (!Browser.fullscreenHandlersInstalled) {
          Browser.fullscreenHandlersInstalled = true;
          document.addEventListener('fullscreenchange', fullscreenChange, false);
          document.addEventListener('mozfullscreenchange', fullscreenChange, false);
          document.addEventListener('webkitfullscreenchange', fullscreenChange, false);
          document.addEventListener('MSFullscreenChange', fullscreenChange, false);
        }
  
        // create a new parent to ensure the canvas has no siblings. this allows browsers to optimize full screen performance when its parent is the full screen root
        var canvasContainer = document.createElement("div");
        canvas.parentNode.insertBefore(canvasContainer, canvas);
        canvasContainer.appendChild(canvas);
  
        // use parent of canvas as full screen root to allow aspect ratio correction (Firefox stretches the root to screen size)
        canvasContainer.requestFullscreen = canvasContainer['requestFullscreen'] ||
          canvasContainer['mozRequestFullScreen'] ||
          canvasContainer['msRequestFullscreen'] ||
          (canvasContainer['webkitRequestFullscreen'] ? () => canvasContainer['webkitRequestFullscreen'](Element['ALLOW_KEYBOARD_INPUT']) : null) ||
          (canvasContainer['webkitRequestFullScreen'] ? () => canvasContainer['webkitRequestFullScreen'](Element['ALLOW_KEYBOARD_INPUT']) : null);
  
        canvasContainer.requestFullscreen();
      },
  updateCanvasDimensions(canvas, wNative, hNative) {
        const scale = GLFW.getHiDPIScale();
  
        if (wNative && hNative) {
          canvas.widthNative = wNative;
          canvas.heightNative = hNative;
        } else {
          wNative = canvas.widthNative;
          hNative = canvas.heightNative;
        }
        var w = wNative;
        var h = hNative;
        if (Module['forcedAspectRatio'] && Module['forcedAspectRatio'] > 0) {
          if (w/h < Module['forcedAspectRatio']) {
            w = Math.round(h * Module['forcedAspectRatio']);
          } else {
            h = Math.round(w / Module['forcedAspectRatio']);
          }
        }
        if (((document['fullscreenElement'] || document['mozFullScreenElement'] ||
          document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
          document['webkitCurrentFullScreenElement']) === canvas.parentNode) && (typeof screen != 'undefined')) {
          var factor = Math.min(screen.width / w, screen.height / h);
          w = Math.round(w * factor);
          h = Math.round(h * factor);
        }
        if (Browser.resizeCanvas) {
          wNative = w;
          hNative = h;
        }
        const wNativeScaled = Math.floor(wNative * scale);
        const hNativeScaled = Math.floor(hNative * scale);
        if (canvas.width  != wNativeScaled) canvas.width  = wNativeScaled;
        if (canvas.height != hNativeScaled) canvas.height = hNativeScaled;
        if (typeof canvas.style != 'undefined') {
          if (!GLFW.isCSSScalingEnabled()) {
            canvas.style.setProperty( "width", wNative + "px", "important");
            canvas.style.setProperty("height", hNative + "px", "important");
          } else {
            canvas.style.removeProperty( "width");
            canvas.style.removeProperty("height");
          }
        }
      },
  calculateMouseCoords(pageX, pageY) {
        // Calculate the movement based on the changes
        // in the coordinates.
        const rect = Browser.getCanvas().getBoundingClientRect();
  
        // Neither .scrollX or .pageXOffset are defined in a spec, but
        // we prefer .scrollX because it is currently in a spec draft.
        // (see: http://www.w3.org/TR/2013/WD-cssom-view-20131217/)
        var scrollX = ((typeof window.scrollX != 'undefined') ? window.scrollX : window.pageXOffset);
        var scrollY = ((typeof window.scrollY != 'undefined') ? window.scrollY : window.pageYOffset);
        // If this assert lands, it's likely because the browser doesn't support scrollX or pageXOffset
        // and we have no viable fallback.
        assert((typeof scrollX != 'undefined') && (typeof scrollY != 'undefined'), 'Unable to retrieve scroll position, mouse positions likely broken.');
        var adjustedX = pageX - (scrollX + rect.left);
        var adjustedY = pageY - (scrollY + rect.top);
  
        // getBoundingClientRect() returns dimension affected by CSS, so as a result:
        // - when CSS scaling is enabled, this will fix the mouse coordinates to match the width/height of the window
        // - otherwise the CSS width/height are forced to the width/height of the GLFW window (see updateCanvasDimensions),
        //   so there is no need to adjust the position
        if (GLFW.isCSSScalingEnabled() && GLFW.active) {
          adjustedX = adjustedX * (GLFW.active.width / rect.width);
          adjustedY = adjustedY * (GLFW.active.height / rect.height);
        }
  
        return { x: adjustedX, y: adjustedY };
      },
  setWindowAttrib:(winid, attrib, value) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
        const isHiDPIAware = GLFW.isHiDPIAware();
        win.attributes[attrib] = value;
        if (isHiDPIAware !== GLFW.isHiDPIAware())
          GLFW.adjustCanvasDimensions();
      },
  getDevicePixelRatio() {
        return (typeof devicePixelRatio == 'number' && devicePixelRatio) || 1.0;
      },
  isHiDPIAware() {
        if (GLFW.active)
          return GLFW.active.attributes[0x0002200C] > 0; // GLFW_SCALE_TO_MONITOR
        else
          return false;
      },
  isCSSScalingEnabled() {
        return !GLFW.isHiDPIAware();
      },
  adjustCanvasDimensions() {
        if (GLFW.active) {
          Browser.updateCanvasDimensions(Browser.getCanvas(), GLFW.active.width, GLFW.active.height);
          Browser.updateResizeListeners();
        }
      },
  getHiDPIScale() {
        return GLFW.isHiDPIAware() ? GLFW.scale : 1.0;
      },
  onDevicePixelRatioChange() {
        GLFW.onWindowContentScaleChanged(GLFW.getDevicePixelRatio());
        GLFW.adjustCanvasDimensions();
      },
  GLFW2ParamToGLFW3Param:(param) => {
        var table = {
          0x00030001:0, // GLFW_MOUSE_CURSOR
          0x00030002:0, // GLFW_STICKY_KEYS
          0x00030003:0, // GLFW_STICKY_MOUSE_BUTTONS
          0x00030004:0, // GLFW_SYSTEM_KEYS
          0x00030005:0, // GLFW_KEY_REPEAT
          0x00030006:0, // GLFW_AUTO_POLL_EVENTS
          0x00020001:0, // GLFW_OPENED
          0x00020002:0, // GLFW_ACTIVE
          0x00020003:0, // GLFW_ICONIFIED
          0x00020004:0, // GLFW_ACCELERATED
          0x00020005:0x00021001, // GLFW_RED_BITS
          0x00020006:0x00021002, // GLFW_GREEN_BITS
          0x00020007:0x00021003, // GLFW_BLUE_BITS
          0x00020008:0x00021004, // GLFW_ALPHA_BITS
          0x00020009:0x00021005, // GLFW_DEPTH_BITS
          0x0002000A:0x00021006, // GLFW_STENCIL_BITS
          0x0002000B:0x0002100F, // GLFW_REFRESH_RATE
          0x0002000C:0x00021007, // GLFW_ACCUM_RED_BITS
          0x0002000D:0x00021008, // GLFW_ACCUM_GREEN_BITS
          0x0002000E:0x00021009, // GLFW_ACCUM_BLUE_BITS
          0x0002000F:0x0002100A, // GLFW_ACCUM_ALPHA_BITS
          0x00020010:0x0002100B, // GLFW_AUX_BUFFERS
          0x00020011:0x0002100C, // GLFW_STEREO
          0x00020012:0, // GLFW_WINDOW_NO_RESIZE
          0x00020013:0x0002100D, // GLFW_FSAA_SAMPLES
          0x00020014:0x00022002, // GLFW_OPENGL_VERSION_MAJOR
          0x00020015:0x00022003, // GLFW_OPENGL_VERSION_MINOR
          0x00020016:0x00022006, // GLFW_OPENGL_FORWARD_COMPAT
          0x00020017:0x00022007, // GLFW_OPENGL_DEBUG_CONTEXT
          0x00020018:0x00022008, // GLFW_OPENGL_PROFILE
        };
        return table[param];
      },
  };
  var _glfwCreateWindow = (width, height, title, monitor, share) => GLFW.createWindow(width, height, title, monitor, share);

  var _glfwDefaultWindowHints = () => GLFW.defaultWindowHints();

  var _glfwDestroyWindow = (winid) => GLFW.destroyWindow(winid);

  var _glfwGetPrimaryMonitor = () => 1;

  var _glfwGetTime = () => GLFW.getTime() - GLFW.initialTime;

  var _glfwGetVideoModes = (monitor, count) => {
      HEAP32[((count)>>2)] = 0;
      return 0;
    };

  
  
  var _glfwInit = () => {
      if (GLFW.windows) return 1; // GL_TRUE
  
      GLFW.initialTime = GLFW.getTime();
      GLFW.defaultWindowHints();
      GLFW.windows = new Array()
      GLFW.active = null;
      GLFW.scale  = GLFW.getDevicePixelRatio();
  
      window.addEventListener('gamepadconnected', GLFW.onGamepadConnected, true);
      window.addEventListener('gamepaddisconnected', GLFW.onGamepadDisconnected, true);
      window.addEventListener('keydown', GLFW.onKeydown, true);
      window.addEventListener('keypress', GLFW.onKeyPress, true);
      window.addEventListener('keyup', GLFW.onKeyup, true);
      window.addEventListener('blur', GLFW.onBlur, true);
  
      // watch for devicePixelRatio changes
      GLFW.devicePixelRatioMQL = window.matchMedia('(resolution: ' + GLFW.getDevicePixelRatio() + 'dppx)');
      GLFW.devicePixelRatioMQL.addEventListener('change', GLFW.onDevicePixelRatioChange);
  
      var canvas = Browser.getCanvas();
      canvas.addEventListener('touchmove', GLFW.onMousemove, true);
      canvas.addEventListener('touchstart', GLFW.onMouseButtonDown, true);
      canvas.addEventListener('touchcancel', GLFW.onMouseButtonUp, true);
      canvas.addEventListener('touchend', GLFW.onMouseButtonUp, true);
      canvas.addEventListener('mousemove', GLFW.onMousemove, true);
      canvas.addEventListener('mousedown', GLFW.onMouseButtonDown, true);
      canvas.addEventListener("mouseup", GLFW.onMouseButtonUp, true);
      canvas.addEventListener('wheel', GLFW.onMouseWheel, true);
      canvas.addEventListener('mousewheel', GLFW.onMouseWheel, true);
      canvas.addEventListener('mouseenter', GLFW.onMouseenter, true);
      canvas.addEventListener('mouseleave', GLFW.onMouseleave, true);
      canvas.addEventListener('drop', GLFW.onDrop, true);
      canvas.addEventListener('dragover', GLFW.onDragover, true);
  
      // Overriding implementation to account for HiDPI
      Browser.requestFullscreen = GLFW.requestFullscreen;
      Browser.calculateMouseCoords = GLFW.calculateMouseCoords;
      Browser.updateCanvasDimensions = GLFW.updateCanvasDimensions;
  
      Browser.resizeListeners.push((width, height) => {
        if (GLFW.isHiDPIAware()) {
          var canvas = Browser.getCanvas();
          GLFW.onCanvasResize(canvas.clientWidth, canvas.clientHeight, width, height);
        } else {
          GLFW.onCanvasResize(width, height, width, height);
        }
      });
  
      return 1; // GL_TRUE
    };

  var _glfwMakeContextCurrent = (winid) => 0;

  var _glfwSetCharCallback = (winid, cbfun) => GLFW.setCharCallback(winid, cbfun);

  var _glfwSetCursorEnterCallback = (winid, cbfun) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return null;
      var prevcbfun = win.cursorEnterFunc;
      win.cursorEnterFunc = cbfun;
      return prevcbfun;
    };

  var _glfwSetCursorPosCallback = (winid, cbfun) => GLFW.setCursorPosCallback(winid, cbfun);

  var _glfwSetDropCallback = (winid, cbfun) => GLFW.setDropCallback(winid, cbfun);

  var _glfwSetErrorCallback = (cbfun) => {
      var prevcbfun = GLFW.errorFunc;
      GLFW.errorFunc = cbfun;
      return prevcbfun;
    };

  var _glfwSetKeyCallback = (winid, cbfun) => GLFW.setKeyCallback(winid, cbfun);

  var _glfwSetMouseButtonCallback = (winid, cbfun) => GLFW.setMouseButtonCallback(winid, cbfun);

  var _glfwSetScrollCallback = (winid, cbfun) => GLFW.setScrollCallback(winid, cbfun);

  var _glfwSetWindowContentScaleCallback = (winid, cbfun) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return null;
      var prevcbfun = win.windowContentScaleFunc;
      win.windowContentScaleFunc = cbfun;
      return prevcbfun;
    };

  var _glfwSetWindowFocusCallback = (winid, cbfun) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return null;
      var prevcbfun = win.windowFocusFunc;
      win.windowFocusFunc = cbfun;
      return prevcbfun;
    };

  var _glfwSetWindowIconifyCallback = (winid, cbfun) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return null;
      var prevcbfun = win.windowIconifyFunc;
      win.windowIconifyFunc = cbfun;
      return prevcbfun;
    };

  var _glfwSetWindowShouldClose = (winid, value) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return;
      win.shouldClose = value;
    };

  var _glfwSetWindowSizeCallback = (winid, cbfun) => GLFW.setWindowSizeCallback(winid, cbfun);

  var _glfwSwapBuffers = (winid) => GLFW.swapBuffers(winid);

  var _glfwTerminate = () => {
      window.removeEventListener('gamepadconnected', GLFW.onGamepadConnected, true);
      window.removeEventListener('gamepaddisconnected', GLFW.onGamepadDisconnected, true);
      window.removeEventListener('keydown', GLFW.onKeydown, true);
      window.removeEventListener('keypress', GLFW.onKeyPress, true);
      window.removeEventListener('keyup', GLFW.onKeyup, true);
      window.removeEventListener('blur', GLFW.onBlur, true);
      var canvas = Browser.getCanvas();
      canvas.removeEventListener('touchmove', GLFW.onMousemove, true);
      canvas.removeEventListener('touchstart', GLFW.onMouseButtonDown, true);
      canvas.removeEventListener('touchcancel', GLFW.onMouseButtonUp, true);
      canvas.removeEventListener('touchend', GLFW.onMouseButtonUp, true);
      canvas.removeEventListener('mousemove', GLFW.onMousemove, true);
      canvas.removeEventListener('mousedown', GLFW.onMouseButtonDown, true);
      canvas.removeEventListener('mouseup', GLFW.onMouseButtonUp, true);
      canvas.removeEventListener('wheel', GLFW.onMouseWheel, true);
      canvas.removeEventListener('mousewheel', GLFW.onMouseWheel, true);
      canvas.removeEventListener('mouseenter', GLFW.onMouseenter, true);
      canvas.removeEventListener('mouseleave', GLFW.onMouseleave, true);
      canvas.removeEventListener('drop', GLFW.onDrop, true);
      canvas.removeEventListener('dragover', GLFW.onDragover, true);
  
      if (GLFW.devicePixelRatioMQL)
        GLFW.devicePixelRatioMQL.removeEventListener('change', GLFW.onDevicePixelRatioChange);
  
      canvas.width = canvas.height = 1;
      GLFW.windows = null;
      GLFW.active = null;
    };

  var _glfwWindowHint = (target, hint) => {
      GLFW.hints[target] = hint;
    };



  FS.createPreloadedFile = FS_createPreloadedFile;
  FS.staticInit();
  // Set module methods based on EXPORTED_RUNTIME_METHODS
  ;
for (var i = 0; i < 32; ++i) tempFixedLengthArray.push(new Array(i));;
var miniTempWebGLFloatBuffersStorage = new Float32Array(288);
  // Create GL_POOL_TEMP_BUFFERS_SIZE+1 temporary buffers, for uploads of size 0 through GL_POOL_TEMP_BUFFERS_SIZE inclusive
  for (/**@suppress{duplicate}*/var i = 0; i <= 288; ++i) {
    miniTempWebGLFloatBuffers[i] = miniTempWebGLFloatBuffersStorage.subarray(0, i);
  };
var miniTempWebGLIntBuffersStorage = new Int32Array(288);
  // Create GL_POOL_TEMP_BUFFERS_SIZE+1 temporary buffers, for uploads of size 0 through GL_POOL_TEMP_BUFFERS_SIZE inclusive
  for (/**@suppress{duplicate}*/var i = 0; i <= 288; ++i) {
    miniTempWebGLIntBuffers[i] = miniTempWebGLIntBuffersStorage.subarray(0, i);
  };

      Module['requestAnimationFrame'] = MainLoop.requestAnimationFrame;
      Module['pauseMainLoop'] = MainLoop.pause;
      Module['resumeMainLoop'] = MainLoop.resume;
      MainLoop.init();;

      // exports
      Module['requestFullscreen'] = Browser.requestFullscreen;
      Module['requestFullScreen'] = Browser.requestFullScreen;
      Module['setCanvasSize'] = Browser.setCanvasSize;
      Module['getUserMedia'] = Browser.getUserMedia;
      Module['createContext'] = Browser.createContext;
    ;
function checkIncomingModuleAPI() {
  ignoredModuleProp('fetchSettings');
}
var wasmImports = {
  /** @export */
  __assert_fail: ___assert_fail,
  /** @export */
  __syscall_faccessat: ___syscall_faccessat,
  /** @export */
  __syscall_fcntl64: ___syscall_fcntl64,
  /** @export */
  __syscall_getcwd: ___syscall_getcwd,
  /** @export */
  __syscall_ioctl: ___syscall_ioctl,
  /** @export */
  __syscall_openat: ___syscall_openat,
  /** @export */
  _abort_js: __abort_js,
  /** @export */
  _localtime_js: __localtime_js,
  /** @export */
  _tzset_js: __tzset_js,
  /** @export */
  clock_time_get: _clock_time_get,
  /** @export */
  emscripten_asm_const_int: _emscripten_asm_const_int,
  /** @export */
  emscripten_date_now: _emscripten_date_now,
  /** @export */
  emscripten_get_element_css_size: _emscripten_get_element_css_size,
  /** @export */
  emscripten_get_gamepad_status: _emscripten_get_gamepad_status,
  /** @export */
  emscripten_get_now: _emscripten_get_now,
  /** @export */
  emscripten_get_num_gamepads: _emscripten_get_num_gamepads,
  /** @export */
  emscripten_glActiveTexture: _emscripten_glActiveTexture,
  /** @export */
  emscripten_glAttachShader: _emscripten_glAttachShader,
  /** @export */
  emscripten_glBeginQueryEXT: _emscripten_glBeginQueryEXT,
  /** @export */
  emscripten_glBindAttribLocation: _emscripten_glBindAttribLocation,
  /** @export */
  emscripten_glBindBuffer: _emscripten_glBindBuffer,
  /** @export */
  emscripten_glBindFramebuffer: _emscripten_glBindFramebuffer,
  /** @export */
  emscripten_glBindRenderbuffer: _emscripten_glBindRenderbuffer,
  /** @export */
  emscripten_glBindTexture: _emscripten_glBindTexture,
  /** @export */
  emscripten_glBindVertexArrayOES: _emscripten_glBindVertexArrayOES,
  /** @export */
  emscripten_glBlendColor: _emscripten_glBlendColor,
  /** @export */
  emscripten_glBlendEquation: _emscripten_glBlendEquation,
  /** @export */
  emscripten_glBlendEquationSeparate: _emscripten_glBlendEquationSeparate,
  /** @export */
  emscripten_glBlendFunc: _emscripten_glBlendFunc,
  /** @export */
  emscripten_glBlendFuncSeparate: _emscripten_glBlendFuncSeparate,
  /** @export */
  emscripten_glBufferData: _emscripten_glBufferData,
  /** @export */
  emscripten_glBufferSubData: _emscripten_glBufferSubData,
  /** @export */
  emscripten_glCheckFramebufferStatus: _emscripten_glCheckFramebufferStatus,
  /** @export */
  emscripten_glClear: _emscripten_glClear,
  /** @export */
  emscripten_glClearColor: _emscripten_glClearColor,
  /** @export */
  emscripten_glClearDepthf: _emscripten_glClearDepthf,
  /** @export */
  emscripten_glClearStencil: _emscripten_glClearStencil,
  /** @export */
  emscripten_glClipControlEXT: _emscripten_glClipControlEXT,
  /** @export */
  emscripten_glColorMask: _emscripten_glColorMask,
  /** @export */
  emscripten_glCompileShader: _emscripten_glCompileShader,
  /** @export */
  emscripten_glCompressedTexImage2D: _emscripten_glCompressedTexImage2D,
  /** @export */
  emscripten_glCompressedTexSubImage2D: _emscripten_glCompressedTexSubImage2D,
  /** @export */
  emscripten_glCopyTexImage2D: _emscripten_glCopyTexImage2D,
  /** @export */
  emscripten_glCopyTexSubImage2D: _emscripten_glCopyTexSubImage2D,
  /** @export */
  emscripten_glCreateProgram: _emscripten_glCreateProgram,
  /** @export */
  emscripten_glCreateShader: _emscripten_glCreateShader,
  /** @export */
  emscripten_glCullFace: _emscripten_glCullFace,
  /** @export */
  emscripten_glDeleteBuffers: _emscripten_glDeleteBuffers,
  /** @export */
  emscripten_glDeleteFramebuffers: _emscripten_glDeleteFramebuffers,
  /** @export */
  emscripten_glDeleteProgram: _emscripten_glDeleteProgram,
  /** @export */
  emscripten_glDeleteQueriesEXT: _emscripten_glDeleteQueriesEXT,
  /** @export */
  emscripten_glDeleteRenderbuffers: _emscripten_glDeleteRenderbuffers,
  /** @export */
  emscripten_glDeleteShader: _emscripten_glDeleteShader,
  /** @export */
  emscripten_glDeleteTextures: _emscripten_glDeleteTextures,
  /** @export */
  emscripten_glDeleteVertexArraysOES: _emscripten_glDeleteVertexArraysOES,
  /** @export */
  emscripten_glDepthFunc: _emscripten_glDepthFunc,
  /** @export */
  emscripten_glDepthMask: _emscripten_glDepthMask,
  /** @export */
  emscripten_glDepthRangef: _emscripten_glDepthRangef,
  /** @export */
  emscripten_glDetachShader: _emscripten_glDetachShader,
  /** @export */
  emscripten_glDisable: _emscripten_glDisable,
  /** @export */
  emscripten_glDisableVertexAttribArray: _emscripten_glDisableVertexAttribArray,
  /** @export */
  emscripten_glDrawArrays: _emscripten_glDrawArrays,
  /** @export */
  emscripten_glDrawArraysInstancedANGLE: _emscripten_glDrawArraysInstancedANGLE,
  /** @export */
  emscripten_glDrawBuffersWEBGL: _emscripten_glDrawBuffersWEBGL,
  /** @export */
  emscripten_glDrawElements: _emscripten_glDrawElements,
  /** @export */
  emscripten_glDrawElementsInstancedANGLE: _emscripten_glDrawElementsInstancedANGLE,
  /** @export */
  emscripten_glEnable: _emscripten_glEnable,
  /** @export */
  emscripten_glEnableVertexAttribArray: _emscripten_glEnableVertexAttribArray,
  /** @export */
  emscripten_glEndQueryEXT: _emscripten_glEndQueryEXT,
  /** @export */
  emscripten_glFinish: _emscripten_glFinish,
  /** @export */
  emscripten_glFlush: _emscripten_glFlush,
  /** @export */
  emscripten_glFramebufferRenderbuffer: _emscripten_glFramebufferRenderbuffer,
  /** @export */
  emscripten_glFramebufferTexture2D: _emscripten_glFramebufferTexture2D,
  /** @export */
  emscripten_glFrontFace: _emscripten_glFrontFace,
  /** @export */
  emscripten_glGenBuffers: _emscripten_glGenBuffers,
  /** @export */
  emscripten_glGenFramebuffers: _emscripten_glGenFramebuffers,
  /** @export */
  emscripten_glGenQueriesEXT: _emscripten_glGenQueriesEXT,
  /** @export */
  emscripten_glGenRenderbuffers: _emscripten_glGenRenderbuffers,
  /** @export */
  emscripten_glGenTextures: _emscripten_glGenTextures,
  /** @export */
  emscripten_glGenVertexArraysOES: _emscripten_glGenVertexArraysOES,
  /** @export */
  emscripten_glGenerateMipmap: _emscripten_glGenerateMipmap,
  /** @export */
  emscripten_glGetActiveAttrib: _emscripten_glGetActiveAttrib,
  /** @export */
  emscripten_glGetActiveUniform: _emscripten_glGetActiveUniform,
  /** @export */
  emscripten_glGetAttachedShaders: _emscripten_glGetAttachedShaders,
  /** @export */
  emscripten_glGetAttribLocation: _emscripten_glGetAttribLocation,
  /** @export */
  emscripten_glGetBooleanv: _emscripten_glGetBooleanv,
  /** @export */
  emscripten_glGetBufferParameteriv: _emscripten_glGetBufferParameteriv,
  /** @export */
  emscripten_glGetError: _emscripten_glGetError,
  /** @export */
  emscripten_glGetFloatv: _emscripten_glGetFloatv,
  /** @export */
  emscripten_glGetFramebufferAttachmentParameteriv: _emscripten_glGetFramebufferAttachmentParameteriv,
  /** @export */
  emscripten_glGetIntegerv: _emscripten_glGetIntegerv,
  /** @export */
  emscripten_glGetProgramInfoLog: _emscripten_glGetProgramInfoLog,
  /** @export */
  emscripten_glGetProgramiv: _emscripten_glGetProgramiv,
  /** @export */
  emscripten_glGetQueryObjecti64vEXT: _emscripten_glGetQueryObjecti64vEXT,
  /** @export */
  emscripten_glGetQueryObjectivEXT: _emscripten_glGetQueryObjectivEXT,
  /** @export */
  emscripten_glGetQueryObjectui64vEXT: _emscripten_glGetQueryObjectui64vEXT,
  /** @export */
  emscripten_glGetQueryObjectuivEXT: _emscripten_glGetQueryObjectuivEXT,
  /** @export */
  emscripten_glGetQueryivEXT: _emscripten_glGetQueryivEXT,
  /** @export */
  emscripten_glGetRenderbufferParameteriv: _emscripten_glGetRenderbufferParameteriv,
  /** @export */
  emscripten_glGetShaderInfoLog: _emscripten_glGetShaderInfoLog,
  /** @export */
  emscripten_glGetShaderPrecisionFormat: _emscripten_glGetShaderPrecisionFormat,
  /** @export */
  emscripten_glGetShaderSource: _emscripten_glGetShaderSource,
  /** @export */
  emscripten_glGetShaderiv: _emscripten_glGetShaderiv,
  /** @export */
  emscripten_glGetString: _emscripten_glGetString,
  /** @export */
  emscripten_glGetTexParameterfv: _emscripten_glGetTexParameterfv,
  /** @export */
  emscripten_glGetTexParameteriv: _emscripten_glGetTexParameteriv,
  /** @export */
  emscripten_glGetUniformLocation: _emscripten_glGetUniformLocation,
  /** @export */
  emscripten_glGetUniformfv: _emscripten_glGetUniformfv,
  /** @export */
  emscripten_glGetUniformiv: _emscripten_glGetUniformiv,
  /** @export */
  emscripten_glGetVertexAttribPointerv: _emscripten_glGetVertexAttribPointerv,
  /** @export */
  emscripten_glGetVertexAttribfv: _emscripten_glGetVertexAttribfv,
  /** @export */
  emscripten_glGetVertexAttribiv: _emscripten_glGetVertexAttribiv,
  /** @export */
  emscripten_glHint: _emscripten_glHint,
  /** @export */
  emscripten_glIsBuffer: _emscripten_glIsBuffer,
  /** @export */
  emscripten_glIsEnabled: _emscripten_glIsEnabled,
  /** @export */
  emscripten_glIsFramebuffer: _emscripten_glIsFramebuffer,
  /** @export */
  emscripten_glIsProgram: _emscripten_glIsProgram,
  /** @export */
  emscripten_glIsQueryEXT: _emscripten_glIsQueryEXT,
  /** @export */
  emscripten_glIsRenderbuffer: _emscripten_glIsRenderbuffer,
  /** @export */
  emscripten_glIsShader: _emscripten_glIsShader,
  /** @export */
  emscripten_glIsTexture: _emscripten_glIsTexture,
  /** @export */
  emscripten_glIsVertexArrayOES: _emscripten_glIsVertexArrayOES,
  /** @export */
  emscripten_glLineWidth: _emscripten_glLineWidth,
  /** @export */
  emscripten_glLinkProgram: _emscripten_glLinkProgram,
  /** @export */
  emscripten_glPixelStorei: _emscripten_glPixelStorei,
  /** @export */
  emscripten_glPolygonModeWEBGL: _emscripten_glPolygonModeWEBGL,
  /** @export */
  emscripten_glPolygonOffset: _emscripten_glPolygonOffset,
  /** @export */
  emscripten_glPolygonOffsetClampEXT: _emscripten_glPolygonOffsetClampEXT,
  /** @export */
  emscripten_glQueryCounterEXT: _emscripten_glQueryCounterEXT,
  /** @export */
  emscripten_glReadPixels: _emscripten_glReadPixels,
  /** @export */
  emscripten_glReleaseShaderCompiler: _emscripten_glReleaseShaderCompiler,
  /** @export */
  emscripten_glRenderbufferStorage: _emscripten_glRenderbufferStorage,
  /** @export */
  emscripten_glSampleCoverage: _emscripten_glSampleCoverage,
  /** @export */
  emscripten_glScissor: _emscripten_glScissor,
  /** @export */
  emscripten_glShaderBinary: _emscripten_glShaderBinary,
  /** @export */
  emscripten_glShaderSource: _emscripten_glShaderSource,
  /** @export */
  emscripten_glStencilFunc: _emscripten_glStencilFunc,
  /** @export */
  emscripten_glStencilFuncSeparate: _emscripten_glStencilFuncSeparate,
  /** @export */
  emscripten_glStencilMask: _emscripten_glStencilMask,
  /** @export */
  emscripten_glStencilMaskSeparate: _emscripten_glStencilMaskSeparate,
  /** @export */
  emscripten_glStencilOp: _emscripten_glStencilOp,
  /** @export */
  emscripten_glStencilOpSeparate: _emscripten_glStencilOpSeparate,
  /** @export */
  emscripten_glTexImage2D: _emscripten_glTexImage2D,
  /** @export */
  emscripten_glTexParameterf: _emscripten_glTexParameterf,
  /** @export */
  emscripten_glTexParameterfv: _emscripten_glTexParameterfv,
  /** @export */
  emscripten_glTexParameteri: _emscripten_glTexParameteri,
  /** @export */
  emscripten_glTexParameteriv: _emscripten_glTexParameteriv,
  /** @export */
  emscripten_glTexSubImage2D: _emscripten_glTexSubImage2D,
  /** @export */
  emscripten_glUniform1f: _emscripten_glUniform1f,
  /** @export */
  emscripten_glUniform1fv: _emscripten_glUniform1fv,
  /** @export */
  emscripten_glUniform1i: _emscripten_glUniform1i,
  /** @export */
  emscripten_glUniform1iv: _emscripten_glUniform1iv,
  /** @export */
  emscripten_glUniform2f: _emscripten_glUniform2f,
  /** @export */
  emscripten_glUniform2fv: _emscripten_glUniform2fv,
  /** @export */
  emscripten_glUniform2i: _emscripten_glUniform2i,
  /** @export */
  emscripten_glUniform2iv: _emscripten_glUniform2iv,
  /** @export */
  emscripten_glUniform3f: _emscripten_glUniform3f,
  /** @export */
  emscripten_glUniform3fv: _emscripten_glUniform3fv,
  /** @export */
  emscripten_glUniform3i: _emscripten_glUniform3i,
  /** @export */
  emscripten_glUniform3iv: _emscripten_glUniform3iv,
  /** @export */
  emscripten_glUniform4f: _emscripten_glUniform4f,
  /** @export */
  emscripten_glUniform4fv: _emscripten_glUniform4fv,
  /** @export */
  emscripten_glUniform4i: _emscripten_glUniform4i,
  /** @export */
  emscripten_glUniform4iv: _emscripten_glUniform4iv,
  /** @export */
  emscripten_glUniformMatrix2fv: _emscripten_glUniformMatrix2fv,
  /** @export */
  emscripten_glUniformMatrix3fv: _emscripten_glUniformMatrix3fv,
  /** @export */
  emscripten_glUniformMatrix4fv: _emscripten_glUniformMatrix4fv,
  /** @export */
  emscripten_glUseProgram: _emscripten_glUseProgram,
  /** @export */
  emscripten_glValidateProgram: _emscripten_glValidateProgram,
  /** @export */
  emscripten_glVertexAttrib1f: _emscripten_glVertexAttrib1f,
  /** @export */
  emscripten_glVertexAttrib1fv: _emscripten_glVertexAttrib1fv,
  /** @export */
  emscripten_glVertexAttrib2f: _emscripten_glVertexAttrib2f,
  /** @export */
  emscripten_glVertexAttrib2fv: _emscripten_glVertexAttrib2fv,
  /** @export */
  emscripten_glVertexAttrib3f: _emscripten_glVertexAttrib3f,
  /** @export */
  emscripten_glVertexAttrib3fv: _emscripten_glVertexAttrib3fv,
  /** @export */
  emscripten_glVertexAttrib4f: _emscripten_glVertexAttrib4f,
  /** @export */
  emscripten_glVertexAttrib4fv: _emscripten_glVertexAttrib4fv,
  /** @export */
  emscripten_glVertexAttribDivisorANGLE: _emscripten_glVertexAttribDivisorANGLE,
  /** @export */
  emscripten_glVertexAttribPointer: _emscripten_glVertexAttribPointer,
  /** @export */
  emscripten_glViewport: _emscripten_glViewport,
  /** @export */
  emscripten_resize_heap: _emscripten_resize_heap,
  /** @export */
  emscripten_sample_gamepad_data: _emscripten_sample_gamepad_data,
  /** @export */
  emscripten_set_canvas_element_size: _emscripten_set_canvas_element_size,
  /** @export */
  emscripten_set_click_callback_on_thread: _emscripten_set_click_callback_on_thread,
  /** @export */
  emscripten_set_fullscreenchange_callback_on_thread: _emscripten_set_fullscreenchange_callback_on_thread,
  /** @export */
  emscripten_set_gamepadconnected_callback_on_thread: _emscripten_set_gamepadconnected_callback_on_thread,
  /** @export */
  emscripten_set_gamepaddisconnected_callback_on_thread: _emscripten_set_gamepaddisconnected_callback_on_thread,
  /** @export */
  emscripten_set_main_loop: _emscripten_set_main_loop,
  /** @export */
  emscripten_set_mousemove_callback_on_thread: _emscripten_set_mousemove_callback_on_thread,
  /** @export */
  emscripten_set_pointerlockchange_callback_on_thread: _emscripten_set_pointerlockchange_callback_on_thread,
  /** @export */
  emscripten_set_resize_callback_on_thread: _emscripten_set_resize_callback_on_thread,
  /** @export */
  emscripten_set_touchcancel_callback_on_thread: _emscripten_set_touchcancel_callback_on_thread,
  /** @export */
  emscripten_set_touchend_callback_on_thread: _emscripten_set_touchend_callback_on_thread,
  /** @export */
  emscripten_set_touchmove_callback_on_thread: _emscripten_set_touchmove_callback_on_thread,
  /** @export */
  emscripten_set_touchstart_callback_on_thread: _emscripten_set_touchstart_callback_on_thread,
  /** @export */
  emscripten_set_window_title: _emscripten_set_window_title,
  /** @export */
  exit: _exit,
  /** @export */
  fd_close: _fd_close,
  /** @export */
  fd_read: _fd_read,
  /** @export */
  fd_seek: _fd_seek,
  /** @export */
  fd_write: _fd_write,
  /** @export */
  glActiveTexture: _glActiveTexture,
  /** @export */
  glAttachShader: _glAttachShader,
  /** @export */
  glBindAttribLocation: _glBindAttribLocation,
  /** @export */
  glBindBuffer: _glBindBuffer,
  /** @export */
  glBindTexture: _glBindTexture,
  /** @export */
  glBlendFunc: _glBlendFunc,
  /** @export */
  glBufferData: _glBufferData,
  /** @export */
  glBufferSubData: _glBufferSubData,
  /** @export */
  glClear: _glClear,
  /** @export */
  glClearColor: _glClearColor,
  /** @export */
  glClearDepthf: _glClearDepthf,
  /** @export */
  glCompileShader: _glCompileShader,
  /** @export */
  glCompressedTexImage2D: _glCompressedTexImage2D,
  /** @export */
  glCreateProgram: _glCreateProgram,
  /** @export */
  glCreateShader: _glCreateShader,
  /** @export */
  glCullFace: _glCullFace,
  /** @export */
  glDeleteBuffers: _glDeleteBuffers,
  /** @export */
  glDeleteProgram: _glDeleteProgram,
  /** @export */
  glDeleteShader: _glDeleteShader,
  /** @export */
  glDeleteTextures: _glDeleteTextures,
  /** @export */
  glDepthFunc: _glDepthFunc,
  /** @export */
  glDetachShader: _glDetachShader,
  /** @export */
  glDisable: _glDisable,
  /** @export */
  glDisableVertexAttribArray: _glDisableVertexAttribArray,
  /** @export */
  glDrawArrays: _glDrawArrays,
  /** @export */
  glDrawElements: _glDrawElements,
  /** @export */
  glEnable: _glEnable,
  /** @export */
  glEnableVertexAttribArray: _glEnableVertexAttribArray,
  /** @export */
  glFrontFace: _glFrontFace,
  /** @export */
  glGenBuffers: _glGenBuffers,
  /** @export */
  glGenTextures: _glGenTextures,
  /** @export */
  glGetAttribLocation: _glGetAttribLocation,
  /** @export */
  glGetFloatv: _glGetFloatv,
  /** @export */
  glGetProgramInfoLog: _glGetProgramInfoLog,
  /** @export */
  glGetProgramiv: _glGetProgramiv,
  /** @export */
  glGetShaderInfoLog: _glGetShaderInfoLog,
  /** @export */
  glGetShaderiv: _glGetShaderiv,
  /** @export */
  glGetString: _glGetString,
  /** @export */
  glGetUniformLocation: _glGetUniformLocation,
  /** @export */
  glLinkProgram: _glLinkProgram,
  /** @export */
  glPixelStorei: _glPixelStorei,
  /** @export */
  glReadPixels: _glReadPixels,
  /** @export */
  glScissor: _glScissor,
  /** @export */
  glShaderSource: _glShaderSource,
  /** @export */
  glTexImage2D: _glTexImage2D,
  /** @export */
  glTexParameteri: _glTexParameteri,
  /** @export */
  glUniform1i: _glUniform1i,
  /** @export */
  glUniform4f: _glUniform4f,
  /** @export */
  glUniformMatrix4fv: _glUniformMatrix4fv,
  /** @export */
  glUseProgram: _glUseProgram,
  /** @export */
  glVertexAttribPointer: _glVertexAttribPointer,
  /** @export */
  glViewport: _glViewport,
  /** @export */
  glfwCreateWindow: _glfwCreateWindow,
  /** @export */
  glfwDefaultWindowHints: _glfwDefaultWindowHints,
  /** @export */
  glfwDestroyWindow: _glfwDestroyWindow,
  /** @export */
  glfwGetPrimaryMonitor: _glfwGetPrimaryMonitor,
  /** @export */
  glfwGetTime: _glfwGetTime,
  /** @export */
  glfwGetVideoModes: _glfwGetVideoModes,
  /** @export */
  glfwInit: _glfwInit,
  /** @export */
  glfwMakeContextCurrent: _glfwMakeContextCurrent,
  /** @export */
  glfwSetCharCallback: _glfwSetCharCallback,
  /** @export */
  glfwSetCursorEnterCallback: _glfwSetCursorEnterCallback,
  /** @export */
  glfwSetCursorPosCallback: _glfwSetCursorPosCallback,
  /** @export */
  glfwSetDropCallback: _glfwSetDropCallback,
  /** @export */
  glfwSetErrorCallback: _glfwSetErrorCallback,
  /** @export */
  glfwSetKeyCallback: _glfwSetKeyCallback,
  /** @export */
  glfwSetMouseButtonCallback: _glfwSetMouseButtonCallback,
  /** @export */
  glfwSetScrollCallback: _glfwSetScrollCallback,
  /** @export */
  glfwSetWindowContentScaleCallback: _glfwSetWindowContentScaleCallback,
  /** @export */
  glfwSetWindowFocusCallback: _glfwSetWindowFocusCallback,
  /** @export */
  glfwSetWindowIconifyCallback: _glfwSetWindowIconifyCallback,
  /** @export */
  glfwSetWindowShouldClose: _glfwSetWindowShouldClose,
  /** @export */
  glfwSetWindowSizeCallback: _glfwSetWindowSizeCallback,
  /** @export */
  glfwSwapBuffers: _glfwSwapBuffers,
  /** @export */
  glfwTerminate: _glfwTerminate,
  /** @export */
  glfwWindowHint: _glfwWindowHint
};
var wasmExports;
createWasm();
var ___wasm_call_ctors = createExportWrapper('__wasm_call_ctors', 0);
var _main = Module['_main'] = createExportWrapper('main', 2);
var _malloc = createExportWrapper('malloc', 1);
var _free = createExportWrapper('free', 1);
var _fflush = createExportWrapper('fflush', 1);
var _strerror = createExportWrapper('strerror', 1);
var _emscripten_stack_init = () => (_emscripten_stack_init = wasmExports['emscripten_stack_init'])();
var _emscripten_stack_get_free = () => (_emscripten_stack_get_free = wasmExports['emscripten_stack_get_free'])();
var _emscripten_stack_get_base = () => (_emscripten_stack_get_base = wasmExports['emscripten_stack_get_base'])();
var _emscripten_stack_get_end = () => (_emscripten_stack_get_end = wasmExports['emscripten_stack_get_end'])();
var __emscripten_stack_restore = (a0) => (__emscripten_stack_restore = wasmExports['_emscripten_stack_restore'])(a0);
var __emscripten_stack_alloc = (a0) => (__emscripten_stack_alloc = wasmExports['_emscripten_stack_alloc'])(a0);
var _emscripten_stack_get_current = () => (_emscripten_stack_get_current = wasmExports['emscripten_stack_get_current'])();


// include: postamble.js
// === Auto-generated postamble setup entry stuff ===

var missingLibrarySymbols = [
  'writeI53ToI64Clamped',
  'writeI53ToI64Signaling',
  'writeI53ToU64Clamped',
  'writeI53ToU64Signaling',
  'convertI32PairToI53',
  'convertI32PairToI53Checked',
  'convertU32PairToI53',
  'stackAlloc',
  'getTempRet0',
  'setTempRet0',
  'growMemory',
  'inetPton4',
  'inetNtop4',
  'inetPton6',
  'inetNtop6',
  'readSockaddr',
  'writeSockaddr',
  'emscriptenLog',
  'runMainThreadEmAsm',
  'getExecutableName',
  'listenOnce',
  'autoResumeAudioContext',
  'getDynCaller',
  'dynCall',
  'runtimeKeepalivePush',
  'runtimeKeepalivePop',
  'asmjsMangle',
  'HandleAllocator',
  'getNativeTypeSize',
  'addOnInit',
  'addOnPostCtor',
  'addOnPreMain',
  'STACK_SIZE',
  'STACK_ALIGN',
  'POINTER_SIZE',
  'ASSERTIONS',
  'getCFunc',
  'ccall',
  'cwrap',
  'uleb128Encode',
  'sigToWasmTypes',
  'generateFuncType',
  'convertJsFunctionToWasm',
  'getEmptyTableSlot',
  'updateTableMap',
  'getFunctionAddress',
  'addFunction',
  'removeFunction',
  'reallyNegative',
  'unSign',
  'strLen',
  'reSign',
  'formatString',
  'intArrayToString',
  'AsciiToString',
  'stringToAscii',
  'UTF16ToString',
  'stringToUTF16',
  'lengthBytesUTF16',
  'UTF32ToString',
  'stringToUTF32',
  'lengthBytesUTF32',
  'stringToUTF8OnStack',
  'writeArrayToMemory',
  'registerKeyEventCallback',
  'registerWheelEventCallback',
  'registerFocusEventCallback',
  'fillDeviceOrientationEventData',
  'registerDeviceOrientationEventCallback',
  'fillDeviceMotionEventData',
  'registerDeviceMotionEventCallback',
  'screenOrientation',
  'fillOrientationChangeEventData',
  'registerOrientationChangeEventCallback',
  'JSEvents_requestFullscreen',
  'JSEvents_resizeCanvasForFullscreen',
  'registerRestoreOldStyle',
  'hideEverythingExceptGivenElement',
  'restoreHiddenElements',
  'setLetterbox',
  'softFullscreenResizeWebGLRenderTarget',
  'doRequestFullscreen',
  'registerPointerlockErrorEventCallback',
  'requestPointerLock',
  'fillVisibilityChangeEventData',
  'registerVisibilityChangeEventCallback',
  'registerBeforeUnloadEventCallback',
  'fillBatteryEventData',
  'battery',
  'registerBatteryEventCallback',
  'setCanvasElementSize',
  'getCanvasElementSize',
  'jsStackTrace',
  'getCallstack',
  'convertPCtoSourceLocation',
  'getEnvStrings',
  'wasiRightsToMuslOFlags',
  'wasiOFlagsToMuslOFlags',
  'setImmediateWrapped',
  'safeRequestAnimationFrame',
  'clearImmediateWrapped',
  'registerPostMainLoop',
  'registerPreMainLoop',
  'getPromise',
  'makePromise',
  'idsToPromises',
  'makePromiseCallback',
  'ExceptionInfo',
  'findMatchingCatch',
  'Browser_asyncPrepareDataCounter',
  'arraySum',
  'addDays',
  'getSocketFromFD',
  'getSocketAddress',
  'FS_unlink',
  'FS_mkdirTree',
  '_setNetworkCallback',
  'writeGLArray',
  'registerWebGlEventCallback',
  'runAndAbortIfError',
  'ALLOC_NORMAL',
  'ALLOC_STACK',
  'allocate',
  'writeStringToMemory',
  'writeAsciiToMemory',
  'setErrNo',
  'demangle',
  'stackTrace',
];
missingLibrarySymbols.forEach(missingLibrarySymbol)

var unexportedSymbols = [
  'run',
  'addRunDependency',
  'removeRunDependency',
  'out',
  'err',
  'callMain',
  'abort',
  'wasmMemory',
  'wasmExports',
  'writeStackCookie',
  'checkStackCookie',
  'writeI53ToI64',
  'readI53FromI64',
  'readI53FromU64',
  'INT53_MAX',
  'INT53_MIN',
  'bigintToI53Checked',
  'stackSave',
  'stackRestore',
  'ptrToString',
  'zeroMemory',
  'exitJS',
  'getHeapMax',
  'abortOnCannotGrowMemory',
  'ENV',
  'ERRNO_CODES',
  'strError',
  'DNS',
  'Protocols',
  'Sockets',
  'timers',
  'warnOnce',
  'readEmAsmArgsArray',
  'readEmAsmArgs',
  'runEmAsmFunction',
  'jstoi_q',
  'jstoi_s',
  'handleException',
  'keepRuntimeAlive',
  'callUserCallback',
  'maybeExit',
  'asyncLoad',
  'alignMemory',
  'mmapAlloc',
  'wasmTable',
  'noExitRuntime',
  'addOnPreRun',
  'addOnExit',
  'addOnPostRun',
  'freeTableIndexes',
  'functionsInTableMap',
  'setValue',
  'getValue',
  'PATH',
  'PATH_FS',
  'UTF8Decoder',
  'UTF8ArrayToString',
  'UTF8ToString',
  'stringToUTF8Array',
  'stringToUTF8',
  'lengthBytesUTF8',
  'intArrayFromString',
  'UTF16Decoder',
  'stringToNewUTF8',
  'JSEvents',
  'specialHTMLTargets',
  'maybeCStringToJsString',
  'findEventTarget',
  'findCanvasEventTarget',
  'getBoundingClientRect',
  'fillMouseEventData',
  'registerMouseEventCallback',
  'registerUiEventCallback',
  'fillFullscreenChangeEventData',
  'registerFullscreenChangeEventCallback',
  'currentFullscreenStrategy',
  'restoreOldWindowedStyle',
  'fillPointerlockChangeEventData',
  'registerPointerlockChangeEventCallback',
  'registerTouchEventCallback',
  'fillGamepadEventData',
  'registerGamepadEventCallback',
  'UNWIND_CACHE',
  'ExitStatus',
  'checkWasiClock',
  'doReadv',
  'doWritev',
  'initRandomFill',
  'randomFill',
  'safeSetTimeout',
  'emSetImmediate',
  'emClearImmediate_deps',
  'emClearImmediate',
  'promiseMap',
  'uncaughtExceptionCount',
  'exceptionLast',
  'exceptionCaught',
  'Browser',
  'getPreloadedImageData__data',
  'wget',
  'MONTH_DAYS_REGULAR',
  'MONTH_DAYS_LEAP',
  'MONTH_DAYS_REGULAR_CUMULATIVE',
  'MONTH_DAYS_LEAP_CUMULATIVE',
  'isLeapYear',
  'ydayFromDate',
  'SYSCALLS',
  'preloadPlugins',
  'FS_createPreloadedFile',
  'FS_modeStringToFlags',
  'FS_getMode',
  'FS_stdin_getChar_buffer',
  'FS_stdin_getChar',
  'FS_createPath',
  'FS_createDevice',
  'FS_readFile',
  'FS',
  'FS_createDataFile',
  'FS_createLazyFile',
  'MEMFS',
  'TTY',
  'PIPEFS',
  'SOCKFS',
  'tempFixedLengthArray',
  'miniTempWebGLFloatBuffers',
  'miniTempWebGLIntBuffers',
  'heapObjectForWebGLType',
  'toTypedArrayIndex',
  'webgl_enable_ANGLE_instanced_arrays',
  'webgl_enable_OES_vertex_array_object',
  'webgl_enable_WEBGL_draw_buffers',
  'webgl_enable_WEBGL_multi_draw',
  'webgl_enable_EXT_polygon_offset_clamp',
  'webgl_enable_EXT_clip_control',
  'webgl_enable_WEBGL_polygon_mode',
  'GL',
  'emscriptenWebGLGet',
  'computeUnpackAlignedImageSize',
  'colorChannelsInGlTextureFormat',
  'emscriptenWebGLGetTexPixelData',
  'emscriptenWebGLGetUniform',
  'webglGetUniformLocation',
  'webglPrepareUniformLocationsBeforeFirstUse',
  'webglGetLeftBracePos',
  'emscriptenWebGLGetVertexAttrib',
  '__glGetActiveAttribOrUniform',
  'AL',
  'GLUT',
  'EGL',
  'GLEW',
  'IDBStore',
  'SDL',
  'SDL_gfx',
  'GLFW_Window',
  'GLFW',
  'allocateUTF8',
  'allocateUTF8OnStack',
  'print',
  'printErr',
];
unexportedSymbols.forEach(unexportedRuntimeSymbol);



var calledRun;

function callMain() {
  assert(runDependencies == 0, 'cannot call main when async dependencies remain! (listen on Module["onRuntimeInitialized"])');
  assert(typeof onPreRuns === 'undefined' || onPreRuns.length == 0, 'cannot call main when preRun functions remain to be called');

  var entryFunction = _main;

  var argc = 0;
  var argv = 0;

  try {

    var ret = entryFunction(argc, argv);

    // if we're not running an evented main loop, it's time to exit
    exitJS(ret, /* implicit = */ true);
    return ret;
  } catch (e) {
    return handleException(e);
  }
}

function stackCheckInit() {
  // This is normally called automatically during __wasm_call_ctors but need to
  // get these values before even running any of the ctors so we call it redundantly
  // here.
  _emscripten_stack_init();
  // TODO(sbc): Move writeStackCookie to native to to avoid this.
  writeStackCookie();
}

function run() {

  if (runDependencies > 0) {
    dependenciesFulfilled = run;
    return;
  }

  stackCheckInit();

  preRun();

  // a preRun added a dependency, run will be called later
  if (runDependencies > 0) {
    dependenciesFulfilled = run;
    return;
  }

  function doRun() {
    // run may have just been called through dependencies being fulfilled just in this very frame,
    // or while the async setStatus time below was happening
    assert(!calledRun);
    calledRun = true;
    Module['calledRun'] = true;

    if (ABORT) return;

    initRuntime();

    preMain();

    Module['onRuntimeInitialized']?.();

    var noInitialRun = Module['noInitialRun'];legacyModuleProp('noInitialRun', 'noInitialRun');
    if (!noInitialRun) callMain();

    postRun();
  }

  if (Module['setStatus']) {
    Module['setStatus']('Running...');
    setTimeout(() => {
      setTimeout(() => Module['setStatus'](''), 1);
      doRun();
    }, 1);
  } else
  {
    doRun();
  }
  checkStackCookie();
}

function checkUnflushedContent() {
  // Compiler settings do not allow exiting the runtime, so flushing
  // the streams is not possible. but in ASSERTIONS mode we check
  // if there was something to flush, and if so tell the user they
  // should request that the runtime be exitable.
  // Normally we would not even include flush() at all, but in ASSERTIONS
  // builds we do so just for this check, and here we see if there is any
  // content to flush, that is, we check if there would have been
  // something a non-ASSERTIONS build would have not seen.
  // How we flush the streams depends on whether we are in SYSCALLS_REQUIRE_FILESYSTEM=0
  // mode (which has its own special function for this; otherwise, all
  // the code is inside libc)
  var oldOut = out;
  var oldErr = err;
  var has = false;
  out = err = (x) => {
    has = true;
  }
  try { // it doesn't matter if it fails
    _fflush(0);
    // also flush in the JS FS layer
    ['stdout', 'stderr'].forEach((name) => {
      var info = FS.analyzePath('/dev/' + name);
      if (!info) return;
      var stream = info.object;
      var rdev = stream.rdev;
      var tty = TTY.ttys[rdev];
      if (tty?.output?.length) {
        has = true;
      }
    });
  } catch(e) {}
  out = oldOut;
  err = oldErr;
  if (has) {
    warnOnce('stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the Emscripten FAQ), or make sure to emit a newline when you printf etc.');
  }
}

if (Module['preInit']) {
  if (typeof Module['preInit'] == 'function') Module['preInit'] = [Module['preInit']];
  while (Module['preInit'].length > 0) {
    Module['preInit'].pop()();
  }
}

run();

// end include: postamble.js