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@@ -0,0 +1,2042 @@
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+(function (global, factory) {
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+ typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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+ typeof define === 'function' && define.amd ? define('underscore', factory) :
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+ (global = typeof globalThis !== 'undefined' ? globalThis : global || self, (function () {
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+ var current = global._;
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+ var exports = global._ = factory();
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+ exports.noConflict = function () { global._ = current; return exports; };
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+ }()));
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+}(this, (function () {
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+ // Underscore.js 1.13.1
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+ // https://underscorejs.org
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+ // (c) 2009-2021 Jeremy Ashkenas, Julian Gonggrijp, and DocumentCloud and Investigative Reporters & Editors
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+ // Underscore may be freely distributed under the MIT license.
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+
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+ // Current version.
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+ var VERSION = '1.13.1';
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+
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+ // Establish the root object, `window` (`self`) in the browser, `global`
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+ // on the server, or `this` in some virtual machines. We use `self`
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+ // instead of `window` for `WebWorker` support.
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+ var root = typeof self == 'object' && self.self === self && self ||
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+ typeof global == 'object' && global.global === global && global ||
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+ Function('return this')() ||
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+ {};
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+
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+ // Save bytes in the minified (but not gzipped) version:
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+ var ArrayProto = Array.prototype, ObjProto = Object.prototype;
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+ var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;
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+
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+ // Create quick reference variables for speed access to core prototypes.
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+ var push = ArrayProto.push,
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+ slice = ArrayProto.slice,
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+ toString = ObjProto.toString,
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+ hasOwnProperty = ObjProto.hasOwnProperty;
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+
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+ // Modern feature detection.
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+ var supportsArrayBuffer = typeof ArrayBuffer !== 'undefined',
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+ supportsDataView = typeof DataView !== 'undefined';
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+
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+ // All **ECMAScript 5+** native function implementations that we hope to use
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+ // are declared here.
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+ var nativeIsArray = Array.isArray,
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+ nativeKeys = Object.keys,
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+ nativeCreate = Object.create,
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+ nativeIsView = supportsArrayBuffer && ArrayBuffer.isView;
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+
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+ // Create references to these builtin functions because we override them.
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+ var _isNaN = isNaN,
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+ _isFinite = isFinite;
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+
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+ // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
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+ var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
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+ var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
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+ 'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
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+
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+ // The largest integer that can be represented exactly.
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+ var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
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+
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+ // Some functions take a variable number of arguments, or a few expected
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+ // arguments at the beginning and then a variable number of values to operate
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+ // on. This helper accumulates all remaining arguments past the function’s
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+ // argument length (or an explicit `startIndex`), into an array that becomes
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+ // the last argument. Similar to ES6’s "rest parameter".
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+ function restArguments(func, startIndex) {
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+ startIndex = startIndex == null ? func.length - 1 : +startIndex;
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+ return function() {
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+ var length = Math.max(arguments.length - startIndex, 0),
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+ rest = Array(length),
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+ index = 0;
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+ for (; index < length; index++) {
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+ rest[index] = arguments[index + startIndex];
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+ }
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+ switch (startIndex) {
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+ case 0: return func.call(this, rest);
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+ case 1: return func.call(this, arguments[0], rest);
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+ case 2: return func.call(this, arguments[0], arguments[1], rest);
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+ }
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+ var args = Array(startIndex + 1);
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+ for (index = 0; index < startIndex; index++) {
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+ args[index] = arguments[index];
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+ }
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+ args[startIndex] = rest;
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+ return func.apply(this, args);
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+ };
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+ }
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+
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+ // Is a given variable an object?
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+ function isObject(obj) {
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+ var type = typeof obj;
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+ return type === 'function' || type === 'object' && !!obj;
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+ }
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+
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+ // Is a given value equal to null?
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+ function isNull(obj) {
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+ return obj === null;
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+ }
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+
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+ // Is a given variable undefined?
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+ function isUndefined(obj) {
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+ return obj === void 0;
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+ }
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+
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+ // Is a given value a boolean?
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+ function isBoolean(obj) {
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+ return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
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+ }
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+
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+ // Is a given value a DOM element?
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+ function isElement(obj) {
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+ return !!(obj && obj.nodeType === 1);
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+ }
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+
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+ // Internal function for creating a `toString`-based type tester.
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+ function tagTester(name) {
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+ var tag = '[object ' + name + ']';
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+ return function(obj) {
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+ return toString.call(obj) === tag;
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+ };
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+ }
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+
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+ var isString = tagTester('String');
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+
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+ var isNumber = tagTester('Number');
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+
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+ var isDate = tagTester('Date');
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+
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+ var isRegExp = tagTester('RegExp');
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+
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+ var isError = tagTester('Error');
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+
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+ var isSymbol = tagTester('Symbol');
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+
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+ var isArrayBuffer = tagTester('ArrayBuffer');
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+
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+ var isFunction = tagTester('Function');
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+
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+ // Optimize `isFunction` if appropriate. Work around some `typeof` bugs in old
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+ // v8, IE 11 (#1621), Safari 8 (#1929), and PhantomJS (#2236).
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+ var nodelist = root.document && root.document.childNodes;
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+ if (typeof /./ != 'function' && typeof Int8Array != 'object' && typeof nodelist != 'function') {
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+ isFunction = function(obj) {
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+ return typeof obj == 'function' || false;
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+ };
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+ }
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+
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+ var isFunction$1 = isFunction;
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+
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+ var hasObjectTag = tagTester('Object');
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+
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+ // In IE 10 - Edge 13, `DataView` has string tag `'[object Object]'`.
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+ // In IE 11, the most common among them, this problem also applies to
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+ // `Map`, `WeakMap` and `Set`.
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+ var hasStringTagBug = (
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+ supportsDataView && hasObjectTag(new DataView(new ArrayBuffer(8)))
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+ ),
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+ isIE11 = (typeof Map !== 'undefined' && hasObjectTag(new Map));
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+
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+ var isDataView = tagTester('DataView');
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+
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+ // In IE 10 - Edge 13, we need a different heuristic
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+ // to determine whether an object is a `DataView`.
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+ function ie10IsDataView(obj) {
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+ return obj != null && isFunction$1(obj.getInt8) && isArrayBuffer(obj.buffer);
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+ }
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+
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+ var isDataView$1 = (hasStringTagBug ? ie10IsDataView : isDataView);
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+
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+ // Is a given value an array?
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+ // Delegates to ECMA5's native `Array.isArray`.
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+ var isArray = nativeIsArray || tagTester('Array');
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+
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+ // Internal function to check whether `key` is an own property name of `obj`.
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+ function has$1(obj, key) {
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+ return obj != null && hasOwnProperty.call(obj, key);
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+ }
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+
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+ var isArguments = tagTester('Arguments');
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+
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+ // Define a fallback version of the method in browsers (ahem, IE < 9), where
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+ // there isn't any inspectable "Arguments" type.
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+ (function() {
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+ if (!isArguments(arguments)) {
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+ isArguments = function(obj) {
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+ return has$1(obj, 'callee');
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+ };
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+ }
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+ }());
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+
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+ var isArguments$1 = isArguments;
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+
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+ // Is a given object a finite number?
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+ function isFinite$1(obj) {
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+ return !isSymbol(obj) && _isFinite(obj) && !isNaN(parseFloat(obj));
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+ }
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+
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+ // Is the given value `NaN`?
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+ function isNaN$1(obj) {
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+ return isNumber(obj) && _isNaN(obj);
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+ }
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+
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+ // Predicate-generating function. Often useful outside of Underscore.
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+ function constant(value) {
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+ return function() {
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+ return value;
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+ };
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+ }
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+
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+ // Common internal logic for `isArrayLike` and `isBufferLike`.
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+ function createSizePropertyCheck(getSizeProperty) {
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+ return function(collection) {
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+ var sizeProperty = getSizeProperty(collection);
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+ return typeof sizeProperty == 'number' && sizeProperty >= 0 && sizeProperty <= MAX_ARRAY_INDEX;
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+ }
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+ }
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+
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+ // Internal helper to generate a function to obtain property `key` from `obj`.
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+ function shallowProperty(key) {
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+ return function(obj) {
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+ return obj == null ? void 0 : obj[key];
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+ };
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+ }
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+
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+ // Internal helper to obtain the `byteLength` property of an object.
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+ var getByteLength = shallowProperty('byteLength');
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+
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+ // Internal helper to determine whether we should spend extensive checks against
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+ // `ArrayBuffer` et al.
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+ var isBufferLike = createSizePropertyCheck(getByteLength);
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+
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+ // Is a given value a typed array?
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+ var typedArrayPattern = /\[object ((I|Ui)nt(8|16|32)|Float(32|64)|Uint8Clamped|Big(I|Ui)nt64)Array\]/;
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+ function isTypedArray(obj) {
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+ // `ArrayBuffer.isView` is the most future-proof, so use it when available.
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+ // Otherwise, fall back on the above regular expression.
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+ return nativeIsView ? (nativeIsView(obj) && !isDataView$1(obj)) :
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+ isBufferLike(obj) && typedArrayPattern.test(toString.call(obj));
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+ }
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+
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+ var isTypedArray$1 = supportsArrayBuffer ? isTypedArray : constant(false);
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+
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+ // Internal helper to obtain the `length` property of an object.
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+ var getLength = shallowProperty('length');
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+
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+ // Internal helper to create a simple lookup structure.
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+ // `collectNonEnumProps` used to depend on `_.contains`, but this led to
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+ // circular imports. `emulatedSet` is a one-off solution that only works for
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+ // arrays of strings.
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+ function emulatedSet(keys) {
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+ var hash = {};
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+ for (var l = keys.length, i = 0; i < l; ++i) hash[keys[i]] = true;
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+ return {
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+ contains: function(key) { return hash[key]; },
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+ push: function(key) {
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+ hash[key] = true;
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+ return keys.push(key);
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+ }
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+ };
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+ }
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+
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+ // Internal helper. Checks `keys` for the presence of keys in IE < 9 that won't
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+ // be iterated by `for key in ...` and thus missed. Extends `keys` in place if
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+ // needed.
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+ function collectNonEnumProps(obj, keys) {
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+ keys = emulatedSet(keys);
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+ var nonEnumIdx = nonEnumerableProps.length;
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+ var constructor = obj.constructor;
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+ var proto = isFunction$1(constructor) && constructor.prototype || ObjProto;
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+
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+ // Constructor is a special case.
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+ var prop = 'constructor';
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+ if (has$1(obj, prop) && !keys.contains(prop)) keys.push(prop);
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+
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+ while (nonEnumIdx--) {
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+ prop = nonEnumerableProps[nonEnumIdx];
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+ if (prop in obj && obj[prop] !== proto[prop] && !keys.contains(prop)) {
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+ keys.push(prop);
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+ }
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+ }
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+ }
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+
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+ // Retrieve the names of an object's own properties.
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+ // Delegates to **ECMAScript 5**'s native `Object.keys`.
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+ function keys(obj) {
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+ if (!isObject(obj)) return [];
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+ if (nativeKeys) return nativeKeys(obj);
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+ var keys = [];
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+ for (var key in obj) if (has$1(obj, key)) keys.push(key);
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+ // Ahem, IE < 9.
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+ if (hasEnumBug) collectNonEnumProps(obj, keys);
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+ return keys;
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+ }
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+
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+ // Is a given array, string, or object empty?
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+ // An "empty" object has no enumerable own-properties.
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+ function isEmpty(obj) {
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+ if (obj == null) return true;
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+ // Skip the more expensive `toString`-based type checks if `obj` has no
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+ // `.length`.
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+ var length = getLength(obj);
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+ if (typeof length == 'number' && (
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+ isArray(obj) || isString(obj) || isArguments$1(obj)
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+ )) return length === 0;
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+ return getLength(keys(obj)) === 0;
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+ }
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+
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+ // Returns whether an object has a given set of `key:value` pairs.
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+ function isMatch(object, attrs) {
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+ var _keys = keys(attrs), length = _keys.length;
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+ if (object == null) return !length;
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+ var obj = Object(object);
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+ for (var i = 0; i < length; i++) {
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+ var key = _keys[i];
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+ if (attrs[key] !== obj[key] || !(key in obj)) return false;
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+ }
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+ return true;
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+ }
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+
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+ // If Underscore is called as a function, it returns a wrapped object that can
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+ // be used OO-style. This wrapper holds altered versions of all functions added
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+ // through `_.mixin`. Wrapped objects may be chained.
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+ function _$1(obj) {
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+ if (obj instanceof _$1) return obj;
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+ if (!(this instanceof _$1)) return new _$1(obj);
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+ this._wrapped = obj;
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+ }
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+
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+ _$1.VERSION = VERSION;
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+
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+ // Extracts the result from a wrapped and chained object.
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+ _$1.prototype.value = function() {
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+ return this._wrapped;
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+ };
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+
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+ // Provide unwrapping proxies for some methods used in engine operations
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+ // such as arithmetic and JSON stringification.
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+ _$1.prototype.valueOf = _$1.prototype.toJSON = _$1.prototype.value;
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+
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+ _$1.prototype.toString = function() {
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+ return String(this._wrapped);
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+ };
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+
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+ // Internal function to wrap or shallow-copy an ArrayBuffer,
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+ // typed array or DataView to a new view, reusing the buffer.
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+ function toBufferView(bufferSource) {
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+ return new Uint8Array(
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+ bufferSource.buffer || bufferSource,
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+ bufferSource.byteOffset || 0,
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+ getByteLength(bufferSource)
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+ );
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+ }
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+
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+ // We use this string twice, so give it a name for minification.
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+ var tagDataView = '[object DataView]';
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+
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+ // Internal recursive comparison function for `_.isEqual`.
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+ function eq(a, b, aStack, bStack) {
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+ // Identical objects are equal. `0 === -0`, but they aren't identical.
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+ // See the [Harmony `egal` proposal](https://wiki.ecmascript.org/doku.php?id=harmony:egal).
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+ if (a === b) return a !== 0 || 1 / a === 1 / b;
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+ // `null` or `undefined` only equal to itself (strict comparison).
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+ if (a == null || b == null) return false;
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+ // `NaN`s are equivalent, but non-reflexive.
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+ if (a !== a) return b !== b;
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+ // Exhaust primitive checks
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+ var type = typeof a;
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+ if (type !== 'function' && type !== 'object' && typeof b != 'object') return false;
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+ return deepEq(a, b, aStack, bStack);
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+ }
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+
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+ // Internal recursive comparison function for `_.isEqual`.
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+ function deepEq(a, b, aStack, bStack) {
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+ // Unwrap any wrapped objects.
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+ if (a instanceof _$1) a = a._wrapped;
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+ if (b instanceof _$1) b = b._wrapped;
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+ // Compare `[[Class]]` names.
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+ var className = toString.call(a);
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+ if (className !== toString.call(b)) return false;
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+ // Work around a bug in IE 10 - Edge 13.
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+ if (hasStringTagBug && className == '[object Object]' && isDataView$1(a)) {
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+ if (!isDataView$1(b)) return false;
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+ className = tagDataView;
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+ }
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+ switch (className) {
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+ // These types are compared by value.
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+ case '[object RegExp]':
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+ // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
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+ case '[object String]':
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+ // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
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+ // equivalent to `new String("5")`.
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|
|
+ return '' + a === '' + b;
|
|
|
+ case '[object Number]':
|
|
|
+ // `NaN`s are equivalent, but non-reflexive.
|
|
|
+ // Object(NaN) is equivalent to NaN.
|
|
|
+ if (+a !== +a) return +b !== +b;
|
|
|
+ // An `egal` comparison is performed for other numeric values.
|
|
|
+ return +a === 0 ? 1 / +a === 1 / b : +a === +b;
|
|
|
+ case '[object Date]':
|
|
|
+ case '[object Boolean]':
|
|
|
+ // Coerce dates and booleans to numeric primitive values. Dates are compared by their
|
|
|
+ // millisecond representations. Note that invalid dates with millisecond representations
|
|
|
+ // of `NaN` are not equivalent.
|
|
|
+ return +a === +b;
|
|
|
+ case '[object Symbol]':
|
|
|
+ return SymbolProto.valueOf.call(a) === SymbolProto.valueOf.call(b);
|
|
|
+ case '[object ArrayBuffer]':
|
|
|
+ case tagDataView:
|
|
|
+ // Coerce to typed array so we can fall through.
|
|
|
+ return deepEq(toBufferView(a), toBufferView(b), aStack, bStack);
|
|
|
+ }
|
|
|
+
|
|
|
+ var areArrays = className === '[object Array]';
|
|
|
+ if (!areArrays && isTypedArray$1(a)) {
|
|
|
+ var byteLength = getByteLength(a);
|
|
|
+ if (byteLength !== getByteLength(b)) return false;
|
|
|
+ if (a.buffer === b.buffer && a.byteOffset === b.byteOffset) return true;
|
|
|
+ areArrays = true;
|
|
|
+ }
|
|
|
+ if (!areArrays) {
|
|
|
+ if (typeof a != 'object' || typeof b != 'object') return false;
|
|
|
+
|
|
|
+ // Objects with different constructors are not equivalent, but `Object`s or `Array`s
|
|
|
+ // from different frames are.
|
|
|
+ var aCtor = a.constructor, bCtor = b.constructor;
|
|
|
+ if (aCtor !== bCtor && !(isFunction$1(aCtor) && aCtor instanceof aCtor &&
|
|
|
+ isFunction$1(bCtor) && bCtor instanceof bCtor)
|
|
|
+ && ('constructor' in a && 'constructor' in b)) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Assume equality for cyclic structures. The algorithm for detecting cyclic
|
|
|
+ // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
|
|
|
+
|
|
|
+ // Initializing stack of traversed objects.
|
|
|
+ // It's done here since we only need them for objects and arrays comparison.
|
|
|
+ aStack = aStack || [];
|
|
|
+ bStack = bStack || [];
|
|
|
+ var length = aStack.length;
|
|
|
+ while (length--) {
|
|
|
+ // Linear search. Performance is inversely proportional to the number of
|
|
|
+ // unique nested structures.
|
|
|
+ if (aStack[length] === a) return bStack[length] === b;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Add the first object to the stack of traversed objects.
|
|
|
+ aStack.push(a);
|
|
|
+ bStack.push(b);
|
|
|
+
|
|
|
+ // Recursively compare objects and arrays.
|
|
|
+ if (areArrays) {
|
|
|
+ // Compare array lengths to determine if a deep comparison is necessary.
|
|
|
+ length = a.length;
|
|
|
+ if (length !== b.length) return false;
|
|
|
+ // Deep compare the contents, ignoring non-numeric properties.
|
|
|
+ while (length--) {
|
|
|
+ if (!eq(a[length], b[length], aStack, bStack)) return false;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ // Deep compare objects.
|
|
|
+ var _keys = keys(a), key;
|
|
|
+ length = _keys.length;
|
|
|
+ // Ensure that both objects contain the same number of properties before comparing deep equality.
|
|
|
+ if (keys(b).length !== length) return false;
|
|
|
+ while (length--) {
|
|
|
+ // Deep compare each member
|
|
|
+ key = _keys[length];
|
|
|
+ if (!(has$1(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Remove the first object from the stack of traversed objects.
|
|
|
+ aStack.pop();
|
|
|
+ bStack.pop();
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Perform a deep comparison to check if two objects are equal.
|
|
|
+ function isEqual(a, b) {
|
|
|
+ return eq(a, b);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Retrieve all the enumerable property names of an object.
|
|
|
+ function allKeys(obj) {
|
|
|
+ if (!isObject(obj)) return [];
|
|
|
+ var keys = [];
|
|
|
+ for (var key in obj) keys.push(key);
|
|
|
+ // Ahem, IE < 9.
|
|
|
+ if (hasEnumBug) collectNonEnumProps(obj, keys);
|
|
|
+ return keys;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Since the regular `Object.prototype.toString` type tests don't work for
|
|
|
+ // some types in IE 11, we use a fingerprinting heuristic instead, based
|
|
|
+ // on the methods. It's not great, but it's the best we got.
|
|
|
+ // The fingerprint method lists are defined below.
|
|
|
+ function ie11fingerprint(methods) {
|
|
|
+ var length = getLength(methods);
|
|
|
+ return function(obj) {
|
|
|
+ if (obj == null) return false;
|
|
|
+ // `Map`, `WeakMap` and `Set` have no enumerable keys.
|
|
|
+ var keys = allKeys(obj);
|
|
|
+ if (getLength(keys)) return false;
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ if (!isFunction$1(obj[methods[i]])) return false;
|
|
|
+ }
|
|
|
+ // If we are testing against `WeakMap`, we need to ensure that
|
|
|
+ // `obj` doesn't have a `forEach` method in order to distinguish
|
|
|
+ // it from a regular `Map`.
|
|
|
+ return methods !== weakMapMethods || !isFunction$1(obj[forEachName]);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // In the interest of compact minification, we write
|
|
|
+ // each string in the fingerprints only once.
|
|
|
+ var forEachName = 'forEach',
|
|
|
+ hasName = 'has',
|
|
|
+ commonInit = ['clear', 'delete'],
|
|
|
+ mapTail = ['get', hasName, 'set'];
|
|
|
+
|
|
|
+ // `Map`, `WeakMap` and `Set` each have slightly different
|
|
|
+ // combinations of the above sublists.
|
|
|
+ var mapMethods = commonInit.concat(forEachName, mapTail),
|
|
|
+ weakMapMethods = commonInit.concat(mapTail),
|
|
|
+ setMethods = ['add'].concat(commonInit, forEachName, hasName);
|
|
|
+
|
|
|
+ var isMap = isIE11 ? ie11fingerprint(mapMethods) : tagTester('Map');
|
|
|
+
|
|
|
+ var isWeakMap = isIE11 ? ie11fingerprint(weakMapMethods) : tagTester('WeakMap');
|
|
|
+
|
|
|
+ var isSet = isIE11 ? ie11fingerprint(setMethods) : tagTester('Set');
|
|
|
+
|
|
|
+ var isWeakSet = tagTester('WeakSet');
|
|
|
+
|
|
|
+ // Retrieve the values of an object's properties.
|
|
|
+ function values(obj) {
|
|
|
+ var _keys = keys(obj);
|
|
|
+ var length = _keys.length;
|
|
|
+ var values = Array(length);
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ values[i] = obj[_keys[i]];
|
|
|
+ }
|
|
|
+ return values;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Convert an object into a list of `[key, value]` pairs.
|
|
|
+ // The opposite of `_.object` with one argument.
|
|
|
+ function pairs(obj) {
|
|
|
+ var _keys = keys(obj);
|
|
|
+ var length = _keys.length;
|
|
|
+ var pairs = Array(length);
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ pairs[i] = [_keys[i], obj[_keys[i]]];
|
|
|
+ }
|
|
|
+ return pairs;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Invert the keys and values of an object. The values must be serializable.
|
|
|
+ function invert(obj) {
|
|
|
+ var result = {};
|
|
|
+ var _keys = keys(obj);
|
|
|
+ for (var i = 0, length = _keys.length; i < length; i++) {
|
|
|
+ result[obj[_keys[i]]] = _keys[i];
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return a sorted list of the function names available on the object.
|
|
|
+ function functions(obj) {
|
|
|
+ var names = [];
|
|
|
+ for (var key in obj) {
|
|
|
+ if (isFunction$1(obj[key])) names.push(key);
|
|
|
+ }
|
|
|
+ return names.sort();
|
|
|
+ }
|
|
|
+
|
|
|
+ // An internal function for creating assigner functions.
|
|
|
+ function createAssigner(keysFunc, defaults) {
|
|
|
+ return function(obj) {
|
|
|
+ var length = arguments.length;
|
|
|
+ if (defaults) obj = Object(obj);
|
|
|
+ if (length < 2 || obj == null) return obj;
|
|
|
+ for (var index = 1; index < length; index++) {
|
|
|
+ var source = arguments[index],
|
|
|
+ keys = keysFunc(source),
|
|
|
+ l = keys.length;
|
|
|
+ for (var i = 0; i < l; i++) {
|
|
|
+ var key = keys[i];
|
|
|
+ if (!defaults || obj[key] === void 0) obj[key] = source[key];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return obj;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Extend a given object with all the properties in passed-in object(s).
|
|
|
+ var extend = createAssigner(allKeys);
|
|
|
+
|
|
|
+ // Assigns a given object with all the own properties in the passed-in
|
|
|
+ // object(s).
|
|
|
+ // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
|
|
|
+ var extendOwn = createAssigner(keys);
|
|
|
+
|
|
|
+ // Fill in a given object with default properties.
|
|
|
+ var defaults = createAssigner(allKeys, true);
|
|
|
+
|
|
|
+ // Create a naked function reference for surrogate-prototype-swapping.
|
|
|
+ function ctor() {
|
|
|
+ return function(){};
|
|
|
+ }
|
|
|
+
|
|
|
+ // An internal function for creating a new object that inherits from another.
|
|
|
+ function baseCreate(prototype) {
|
|
|
+ if (!isObject(prototype)) return {};
|
|
|
+ if (nativeCreate) return nativeCreate(prototype);
|
|
|
+ var Ctor = ctor();
|
|
|
+ Ctor.prototype = prototype;
|
|
|
+ var result = new Ctor;
|
|
|
+ Ctor.prototype = null;
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Creates an object that inherits from the given prototype object.
|
|
|
+ // If additional properties are provided then they will be added to the
|
|
|
+ // created object.
|
|
|
+ function create(prototype, props) {
|
|
|
+ var result = baseCreate(prototype);
|
|
|
+ if (props) extendOwn(result, props);
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create a (shallow-cloned) duplicate of an object.
|
|
|
+ function clone(obj) {
|
|
|
+ if (!isObject(obj)) return obj;
|
|
|
+ return isArray(obj) ? obj.slice() : extend({}, obj);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Invokes `interceptor` with the `obj` and then returns `obj`.
|
|
|
+ // The primary purpose of this method is to "tap into" a method chain, in
|
|
|
+ // order to perform operations on intermediate results within the chain.
|
|
|
+ function tap(obj, interceptor) {
|
|
|
+ interceptor(obj);
|
|
|
+ return obj;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Normalize a (deep) property `path` to array.
|
|
|
+ // Like `_.iteratee`, this function can be customized.
|
|
|
+ function toPath$1(path) {
|
|
|
+ return isArray(path) ? path : [path];
|
|
|
+ }
|
|
|
+ _$1.toPath = toPath$1;
|
|
|
+
|
|
|
+ // Internal wrapper for `_.toPath` to enable minification.
|
|
|
+ // Similar to `cb` for `_.iteratee`.
|
|
|
+ function toPath(path) {
|
|
|
+ return _$1.toPath(path);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal function to obtain a nested property in `obj` along `path`.
|
|
|
+ function deepGet(obj, path) {
|
|
|
+ var length = path.length;
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ if (obj == null) return void 0;
|
|
|
+ obj = obj[path[i]];
|
|
|
+ }
|
|
|
+ return length ? obj : void 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Get the value of the (deep) property on `path` from `object`.
|
|
|
+ // If any property in `path` does not exist or if the value is
|
|
|
+ // `undefined`, return `defaultValue` instead.
|
|
|
+ // The `path` is normalized through `_.toPath`.
|
|
|
+ function get(object, path, defaultValue) {
|
|
|
+ var value = deepGet(object, toPath(path));
|
|
|
+ return isUndefined(value) ? defaultValue : value;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Shortcut function for checking if an object has a given property directly on
|
|
|
+ // itself (in other words, not on a prototype). Unlike the internal `has`
|
|
|
+ // function, this public version can also traverse nested properties.
|
|
|
+ function has(obj, path) {
|
|
|
+ path = toPath(path);
|
|
|
+ var length = path.length;
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ var key = path[i];
|
|
|
+ if (!has$1(obj, key)) return false;
|
|
|
+ obj = obj[key];
|
|
|
+ }
|
|
|
+ return !!length;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Keep the identity function around for default iteratees.
|
|
|
+ function identity(value) {
|
|
|
+ return value;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns a predicate for checking whether an object has a given set of
|
|
|
+ // `key:value` pairs.
|
|
|
+ function matcher(attrs) {
|
|
|
+ attrs = extendOwn({}, attrs);
|
|
|
+ return function(obj) {
|
|
|
+ return isMatch(obj, attrs);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Creates a function that, when passed an object, will traverse that object’s
|
|
|
+ // properties down the given `path`, specified as an array of keys or indices.
|
|
|
+ function property(path) {
|
|
|
+ path = toPath(path);
|
|
|
+ return function(obj) {
|
|
|
+ return deepGet(obj, path);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal function that returns an efficient (for current engines) version
|
|
|
+ // of the passed-in callback, to be repeatedly applied in other Underscore
|
|
|
+ // functions.
|
|
|
+ function optimizeCb(func, context, argCount) {
|
|
|
+ if (context === void 0) return func;
|
|
|
+ switch (argCount == null ? 3 : argCount) {
|
|
|
+ case 1: return function(value) {
|
|
|
+ return func.call(context, value);
|
|
|
+ };
|
|
|
+ // The 2-argument case is omitted because we’re not using it.
|
|
|
+ case 3: return function(value, index, collection) {
|
|
|
+ return func.call(context, value, index, collection);
|
|
|
+ };
|
|
|
+ case 4: return function(accumulator, value, index, collection) {
|
|
|
+ return func.call(context, accumulator, value, index, collection);
|
|
|
+ };
|
|
|
+ }
|
|
|
+ return function() {
|
|
|
+ return func.apply(context, arguments);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // An internal function to generate callbacks that can be applied to each
|
|
|
+ // element in a collection, returning the desired result — either `_.identity`,
|
|
|
+ // an arbitrary callback, a property matcher, or a property accessor.
|
|
|
+ function baseIteratee(value, context, argCount) {
|
|
|
+ if (value == null) return identity;
|
|
|
+ if (isFunction$1(value)) return optimizeCb(value, context, argCount);
|
|
|
+ if (isObject(value) && !isArray(value)) return matcher(value);
|
|
|
+ return property(value);
|
|
|
+ }
|
|
|
+
|
|
|
+ // External wrapper for our callback generator. Users may customize
|
|
|
+ // `_.iteratee` if they want additional predicate/iteratee shorthand styles.
|
|
|
+ // This abstraction hides the internal-only `argCount` argument.
|
|
|
+ function iteratee(value, context) {
|
|
|
+ return baseIteratee(value, context, Infinity);
|
|
|
+ }
|
|
|
+ _$1.iteratee = iteratee;
|
|
|
+
|
|
|
+ // The function we call internally to generate a callback. It invokes
|
|
|
+ // `_.iteratee` if overridden, otherwise `baseIteratee`.
|
|
|
+ function cb(value, context, argCount) {
|
|
|
+ if (_$1.iteratee !== iteratee) return _$1.iteratee(value, context);
|
|
|
+ return baseIteratee(value, context, argCount);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns the results of applying the `iteratee` to each element of `obj`.
|
|
|
+ // In contrast to `_.map` it returns an object.
|
|
|
+ function mapObject(obj, iteratee, context) {
|
|
|
+ iteratee = cb(iteratee, context);
|
|
|
+ var _keys = keys(obj),
|
|
|
+ length = _keys.length,
|
|
|
+ results = {};
|
|
|
+ for (var index = 0; index < length; index++) {
|
|
|
+ var currentKey = _keys[index];
|
|
|
+ results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
|
|
|
+ }
|
|
|
+ return results;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Predicate-generating function. Often useful outside of Underscore.
|
|
|
+ function noop(){}
|
|
|
+
|
|
|
+ // Generates a function for a given object that returns a given property.
|
|
|
+ function propertyOf(obj) {
|
|
|
+ if (obj == null) return noop;
|
|
|
+ return function(path) {
|
|
|
+ return get(obj, path);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Run a function **n** times.
|
|
|
+ function times(n, iteratee, context) {
|
|
|
+ var accum = Array(Math.max(0, n));
|
|
|
+ iteratee = optimizeCb(iteratee, context, 1);
|
|
|
+ for (var i = 0; i < n; i++) accum[i] = iteratee(i);
|
|
|
+ return accum;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return a random integer between `min` and `max` (inclusive).
|
|
|
+ function random(min, max) {
|
|
|
+ if (max == null) {
|
|
|
+ max = min;
|
|
|
+ min = 0;
|
|
|
+ }
|
|
|
+ return min + Math.floor(Math.random() * (max - min + 1));
|
|
|
+ }
|
|
|
+
|
|
|
+ // A (possibly faster) way to get the current timestamp as an integer.
|
|
|
+ var now = Date.now || function() {
|
|
|
+ return new Date().getTime();
|
|
|
+ };
|
|
|
+
|
|
|
+ // Internal helper to generate functions for escaping and unescaping strings
|
|
|
+ // to/from HTML interpolation.
|
|
|
+ function createEscaper(map) {
|
|
|
+ var escaper = function(match) {
|
|
|
+ return map[match];
|
|
|
+ };
|
|
|
+ // Regexes for identifying a key that needs to be escaped.
|
|
|
+ var source = '(?:' + keys(map).join('|') + ')';
|
|
|
+ var testRegexp = RegExp(source);
|
|
|
+ var replaceRegexp = RegExp(source, 'g');
|
|
|
+ return function(string) {
|
|
|
+ string = string == null ? '' : '' + string;
|
|
|
+ return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal list of HTML entities for escaping.
|
|
|
+ var escapeMap = {
|
|
|
+ '&': '&',
|
|
|
+ '<': '<',
|
|
|
+ '>': '>',
|
|
|
+ '"': '"',
|
|
|
+ "'": ''',
|
|
|
+ '`': '`'
|
|
|
+ };
|
|
|
+
|
|
|
+ // Function for escaping strings to HTML interpolation.
|
|
|
+ var _escape = createEscaper(escapeMap);
|
|
|
+
|
|
|
+ // Internal list of HTML entities for unescaping.
|
|
|
+ var unescapeMap = invert(escapeMap);
|
|
|
+
|
|
|
+ // Function for unescaping strings from HTML interpolation.
|
|
|
+ var _unescape = createEscaper(unescapeMap);
|
|
|
+
|
|
|
+ // By default, Underscore uses ERB-style template delimiters. Change the
|
|
|
+ // following template settings to use alternative delimiters.
|
|
|
+ var templateSettings = _$1.templateSettings = {
|
|
|
+ evaluate: /<%([\s\S]+?)%>/g,
|
|
|
+ interpolate: /<%=([\s\S]+?)%>/g,
|
|
|
+ escape: /<%-([\s\S]+?)%>/g
|
|
|
+ };
|
|
|
+
|
|
|
+ // When customizing `_.templateSettings`, if you don't want to define an
|
|
|
+ // interpolation, evaluation or escaping regex, we need one that is
|
|
|
+ // guaranteed not to match.
|
|
|
+ var noMatch = /(.)^/;
|
|
|
+
|
|
|
+ // Certain characters need to be escaped so that they can be put into a
|
|
|
+ // string literal.
|
|
|
+ var escapes = {
|
|
|
+ "'": "'",
|
|
|
+ '\\': '\\',
|
|
|
+ '\r': 'r',
|
|
|
+ '\n': 'n',
|
|
|
+ '\u2028': 'u2028',
|
|
|
+ '\u2029': 'u2029'
|
|
|
+ };
|
|
|
+
|
|
|
+ var escapeRegExp = /\\|'|\r|\n|\u2028|\u2029/g;
|
|
|
+
|
|
|
+ function escapeChar(match) {
|
|
|
+ return '\\' + escapes[match];
|
|
|
+ }
|
|
|
+
|
|
|
+ // In order to prevent third-party code injection through
|
|
|
+ // `_.templateSettings.variable`, we test it against the following regular
|
|
|
+ // expression. It is intentionally a bit more liberal than just matching valid
|
|
|
+ // identifiers, but still prevents possible loopholes through defaults or
|
|
|
+ // destructuring assignment.
|
|
|
+ var bareIdentifier = /^\s*(\w|\$)+\s*$/;
|
|
|
+
|
|
|
+ // JavaScript micro-templating, similar to John Resig's implementation.
|
|
|
+ // Underscore templating handles arbitrary delimiters, preserves whitespace,
|
|
|
+ // and correctly escapes quotes within interpolated code.
|
|
|
+ // NB: `oldSettings` only exists for backwards compatibility.
|
|
|
+ function template(text, settings, oldSettings) {
|
|
|
+ if (!settings && oldSettings) settings = oldSettings;
|
|
|
+ settings = defaults({}, settings, _$1.templateSettings);
|
|
|
+
|
|
|
+ // Combine delimiters into one regular expression via alternation.
|
|
|
+ var matcher = RegExp([
|
|
|
+ (settings.escape || noMatch).source,
|
|
|
+ (settings.interpolate || noMatch).source,
|
|
|
+ (settings.evaluate || noMatch).source
|
|
|
+ ].join('|') + '|$', 'g');
|
|
|
+
|
|
|
+ // Compile the template source, escaping string literals appropriately.
|
|
|
+ var index = 0;
|
|
|
+ var source = "__p+='";
|
|
|
+ text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
|
|
|
+ source += text.slice(index, offset).replace(escapeRegExp, escapeChar);
|
|
|
+ index = offset + match.length;
|
|
|
+
|
|
|
+ if (escape) {
|
|
|
+ source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
|
|
|
+ } else if (interpolate) {
|
|
|
+ source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
|
|
|
+ } else if (evaluate) {
|
|
|
+ source += "';\n" + evaluate + "\n__p+='";
|
|
|
+ }
|
|
|
+
|
|
|
+ // Adobe VMs need the match returned to produce the correct offset.
|
|
|
+ return match;
|
|
|
+ });
|
|
|
+ source += "';\n";
|
|
|
+
|
|
|
+ var argument = settings.variable;
|
|
|
+ if (argument) {
|
|
|
+ // Insure against third-party code injection. (CVE-2021-23358)
|
|
|
+ if (!bareIdentifier.test(argument)) throw new Error(
|
|
|
+ 'variable is not a bare identifier: ' + argument
|
|
|
+ );
|
|
|
+ } else {
|
|
|
+ // If a variable is not specified, place data values in local scope.
|
|
|
+ source = 'with(obj||{}){\n' + source + '}\n';
|
|
|
+ argument = 'obj';
|
|
|
+ }
|
|
|
+
|
|
|
+ source = "var __t,__p='',__j=Array.prototype.join," +
|
|
|
+ "print=function(){__p+=__j.call(arguments,'');};\n" +
|
|
|
+ source + 'return __p;\n';
|
|
|
+
|
|
|
+ var render;
|
|
|
+ try {
|
|
|
+ render = new Function(argument, '_', source);
|
|
|
+ } catch (e) {
|
|
|
+ e.source = source;
|
|
|
+ throw e;
|
|
|
+ }
|
|
|
+
|
|
|
+ var template = function(data) {
|
|
|
+ return render.call(this, data, _$1);
|
|
|
+ };
|
|
|
+
|
|
|
+ // Provide the compiled source as a convenience for precompilation.
|
|
|
+ template.source = 'function(' + argument + '){\n' + source + '}';
|
|
|
+
|
|
|
+ return template;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Traverses the children of `obj` along `path`. If a child is a function, it
|
|
|
+ // is invoked with its parent as context. Returns the value of the final
|
|
|
+ // child, or `fallback` if any child is undefined.
|
|
|
+ function result(obj, path, fallback) {
|
|
|
+ path = toPath(path);
|
|
|
+ var length = path.length;
|
|
|
+ if (!length) {
|
|
|
+ return isFunction$1(fallback) ? fallback.call(obj) : fallback;
|
|
|
+ }
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ var prop = obj == null ? void 0 : obj[path[i]];
|
|
|
+ if (prop === void 0) {
|
|
|
+ prop = fallback;
|
|
|
+ i = length; // Ensure we don't continue iterating.
|
|
|
+ }
|
|
|
+ obj = isFunction$1(prop) ? prop.call(obj) : prop;
|
|
|
+ }
|
|
|
+ return obj;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Generate a unique integer id (unique within the entire client session).
|
|
|
+ // Useful for temporary DOM ids.
|
|
|
+ var idCounter = 0;
|
|
|
+ function uniqueId(prefix) {
|
|
|
+ var id = ++idCounter + '';
|
|
|
+ return prefix ? prefix + id : id;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Start chaining a wrapped Underscore object.
|
|
|
+ function chain(obj) {
|
|
|
+ var instance = _$1(obj);
|
|
|
+ instance._chain = true;
|
|
|
+ return instance;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal function to execute `sourceFunc` bound to `context` with optional
|
|
|
+ // `args`. Determines whether to execute a function as a constructor or as a
|
|
|
+ // normal function.
|
|
|
+ function executeBound(sourceFunc, boundFunc, context, callingContext, args) {
|
|
|
+ if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
|
|
|
+ var self = baseCreate(sourceFunc.prototype);
|
|
|
+ var result = sourceFunc.apply(self, args);
|
|
|
+ if (isObject(result)) return result;
|
|
|
+ return self;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Partially apply a function by creating a version that has had some of its
|
|
|
+ // arguments pre-filled, without changing its dynamic `this` context. `_` acts
|
|
|
+ // as a placeholder by default, allowing any combination of arguments to be
|
|
|
+ // pre-filled. Set `_.partial.placeholder` for a custom placeholder argument.
|
|
|
+ var partial = restArguments(function(func, boundArgs) {
|
|
|
+ var placeholder = partial.placeholder;
|
|
|
+ var bound = function() {
|
|
|
+ var position = 0, length = boundArgs.length;
|
|
|
+ var args = Array(length);
|
|
|
+ for (var i = 0; i < length; i++) {
|
|
|
+ args[i] = boundArgs[i] === placeholder ? arguments[position++] : boundArgs[i];
|
|
|
+ }
|
|
|
+ while (position < arguments.length) args.push(arguments[position++]);
|
|
|
+ return executeBound(func, bound, this, this, args);
|
|
|
+ };
|
|
|
+ return bound;
|
|
|
+ });
|
|
|
+
|
|
|
+ partial.placeholder = _$1;
|
|
|
+
|
|
|
+ // Create a function bound to a given object (assigning `this`, and arguments,
|
|
|
+ // optionally).
|
|
|
+ var bind = restArguments(function(func, context, args) {
|
|
|
+ if (!isFunction$1(func)) throw new TypeError('Bind must be called on a function');
|
|
|
+ var bound = restArguments(function(callArgs) {
|
|
|
+ return executeBound(func, bound, context, this, args.concat(callArgs));
|
|
|
+ });
|
|
|
+ return bound;
|
|
|
+ });
|
|
|
+
|
|
|
+ // Internal helper for collection methods to determine whether a collection
|
|
|
+ // should be iterated as an array or as an object.
|
|
|
+ // Related: https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
|
|
|
+ // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
|
|
|
+ var isArrayLike = createSizePropertyCheck(getLength);
|
|
|
+
|
|
|
+ // Internal implementation of a recursive `flatten` function.
|
|
|
+ function flatten$1(input, depth, strict, output) {
|
|
|
+ output = output || [];
|
|
|
+ if (!depth && depth !== 0) {
|
|
|
+ depth = Infinity;
|
|
|
+ } else if (depth <= 0) {
|
|
|
+ return output.concat(input);
|
|
|
+ }
|
|
|
+ var idx = output.length;
|
|
|
+ for (var i = 0, length = getLength(input); i < length; i++) {
|
|
|
+ var value = input[i];
|
|
|
+ if (isArrayLike(value) && (isArray(value) || isArguments$1(value))) {
|
|
|
+ // Flatten current level of array or arguments object.
|
|
|
+ if (depth > 1) {
|
|
|
+ flatten$1(value, depth - 1, strict, output);
|
|
|
+ idx = output.length;
|
|
|
+ } else {
|
|
|
+ var j = 0, len = value.length;
|
|
|
+ while (j < len) output[idx++] = value[j++];
|
|
|
+ }
|
|
|
+ } else if (!strict) {
|
|
|
+ output[idx++] = value;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return output;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Bind a number of an object's methods to that object. Remaining arguments
|
|
|
+ // are the method names to be bound. Useful for ensuring that all callbacks
|
|
|
+ // defined on an object belong to it.
|
|
|
+ var bindAll = restArguments(function(obj, keys) {
|
|
|
+ keys = flatten$1(keys, false, false);
|
|
|
+ var index = keys.length;
|
|
|
+ if (index < 1) throw new Error('bindAll must be passed function names');
|
|
|
+ while (index--) {
|
|
|
+ var key = keys[index];
|
|
|
+ obj[key] = bind(obj[key], obj);
|
|
|
+ }
|
|
|
+ return obj;
|
|
|
+ });
|
|
|
+
|
|
|
+ // Memoize an expensive function by storing its results.
|
|
|
+ function memoize(func, hasher) {
|
|
|
+ var memoize = function(key) {
|
|
|
+ var cache = memoize.cache;
|
|
|
+ var address = '' + (hasher ? hasher.apply(this, arguments) : key);
|
|
|
+ if (!has$1(cache, address)) cache[address] = func.apply(this, arguments);
|
|
|
+ return cache[address];
|
|
|
+ };
|
|
|
+ memoize.cache = {};
|
|
|
+ return memoize;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Delays a function for the given number of milliseconds, and then calls
|
|
|
+ // it with the arguments supplied.
|
|
|
+ var delay = restArguments(function(func, wait, args) {
|
|
|
+ return setTimeout(function() {
|
|
|
+ return func.apply(null, args);
|
|
|
+ }, wait);
|
|
|
+ });
|
|
|
+
|
|
|
+ // Defers a function, scheduling it to run after the current call stack has
|
|
|
+ // cleared.
|
|
|
+ var defer = partial(delay, _$1, 1);
|
|
|
+
|
|
|
+ // Returns a function, that, when invoked, will only be triggered at most once
|
|
|
+ // during a given window of time. Normally, the throttled function will run
|
|
|
+ // as much as it can, without ever going more than once per `wait` duration;
|
|
|
+ // but if you'd like to disable the execution on the leading edge, pass
|
|
|
+ // `{leading: false}`. To disable execution on the trailing edge, ditto.
|
|
|
+ function throttle(func, wait, options) {
|
|
|
+ var timeout, context, args, result;
|
|
|
+ var previous = 0;
|
|
|
+ if (!options) options = {};
|
|
|
+
|
|
|
+ var later = function() {
|
|
|
+ previous = options.leading === false ? 0 : now();
|
|
|
+ timeout = null;
|
|
|
+ result = func.apply(context, args);
|
|
|
+ if (!timeout) context = args = null;
|
|
|
+ };
|
|
|
+
|
|
|
+ var throttled = function() {
|
|
|
+ var _now = now();
|
|
|
+ if (!previous && options.leading === false) previous = _now;
|
|
|
+ var remaining = wait - (_now - previous);
|
|
|
+ context = this;
|
|
|
+ args = arguments;
|
|
|
+ if (remaining <= 0 || remaining > wait) {
|
|
|
+ if (timeout) {
|
|
|
+ clearTimeout(timeout);
|
|
|
+ timeout = null;
|
|
|
+ }
|
|
|
+ previous = _now;
|
|
|
+ result = func.apply(context, args);
|
|
|
+ if (!timeout) context = args = null;
|
|
|
+ } else if (!timeout && options.trailing !== false) {
|
|
|
+ timeout = setTimeout(later, remaining);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ };
|
|
|
+
|
|
|
+ throttled.cancel = function() {
|
|
|
+ clearTimeout(timeout);
|
|
|
+ previous = 0;
|
|
|
+ timeout = context = args = null;
|
|
|
+ };
|
|
|
+
|
|
|
+ return throttled;
|
|
|
+ }
|
|
|
+
|
|
|
+ // When a sequence of calls of the returned function ends, the argument
|
|
|
+ // function is triggered. The end of a sequence is defined by the `wait`
|
|
|
+ // parameter. If `immediate` is passed, the argument function will be
|
|
|
+ // triggered at the beginning of the sequence instead of at the end.
|
|
|
+ function debounce(func, wait, immediate) {
|
|
|
+ var timeout, previous, args, result, context;
|
|
|
+
|
|
|
+ var later = function() {
|
|
|
+ var passed = now() - previous;
|
|
|
+ if (wait > passed) {
|
|
|
+ timeout = setTimeout(later, wait - passed);
|
|
|
+ } else {
|
|
|
+ timeout = null;
|
|
|
+ if (!immediate) result = func.apply(context, args);
|
|
|
+ // This check is needed because `func` can recursively invoke `debounced`.
|
|
|
+ if (!timeout) args = context = null;
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ var debounced = restArguments(function(_args) {
|
|
|
+ context = this;
|
|
|
+ args = _args;
|
|
|
+ previous = now();
|
|
|
+ if (!timeout) {
|
|
|
+ timeout = setTimeout(later, wait);
|
|
|
+ if (immediate) result = func.apply(context, args);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ });
|
|
|
+
|
|
|
+ debounced.cancel = function() {
|
|
|
+ clearTimeout(timeout);
|
|
|
+ timeout = args = context = null;
|
|
|
+ };
|
|
|
+
|
|
|
+ return debounced;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns the first function passed as an argument to the second,
|
|
|
+ // allowing you to adjust arguments, run code before and after, and
|
|
|
+ // conditionally execute the original function.
|
|
|
+ function wrap(func, wrapper) {
|
|
|
+ return partial(wrapper, func);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns a negated version of the passed-in predicate.
|
|
|
+ function negate(predicate) {
|
|
|
+ return function() {
|
|
|
+ return !predicate.apply(this, arguments);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns a function that is the composition of a list of functions, each
|
|
|
+ // consuming the return value of the function that follows.
|
|
|
+ function compose() {
|
|
|
+ var args = arguments;
|
|
|
+ var start = args.length - 1;
|
|
|
+ return function() {
|
|
|
+ var i = start;
|
|
|
+ var result = args[start].apply(this, arguments);
|
|
|
+ while (i--) result = args[i].call(this, result);
|
|
|
+ return result;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns a function that will only be executed on and after the Nth call.
|
|
|
+ function after(times, func) {
|
|
|
+ return function() {
|
|
|
+ if (--times < 1) {
|
|
|
+ return func.apply(this, arguments);
|
|
|
+ }
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns a function that will only be executed up to (but not including) the
|
|
|
+ // Nth call.
|
|
|
+ function before(times, func) {
|
|
|
+ var memo;
|
|
|
+ return function() {
|
|
|
+ if (--times > 0) {
|
|
|
+ memo = func.apply(this, arguments);
|
|
|
+ }
|
|
|
+ if (times <= 1) func = null;
|
|
|
+ return memo;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns a function that will be executed at most one time, no matter how
|
|
|
+ // often you call it. Useful for lazy initialization.
|
|
|
+ var once = partial(before, 2);
|
|
|
+
|
|
|
+ // Returns the first key on an object that passes a truth test.
|
|
|
+ function findKey(obj, predicate, context) {
|
|
|
+ predicate = cb(predicate, context);
|
|
|
+ var _keys = keys(obj), key;
|
|
|
+ for (var i = 0, length = _keys.length; i < length; i++) {
|
|
|
+ key = _keys[i];
|
|
|
+ if (predicate(obj[key], key, obj)) return key;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal function to generate `_.findIndex` and `_.findLastIndex`.
|
|
|
+ function createPredicateIndexFinder(dir) {
|
|
|
+ return function(array, predicate, context) {
|
|
|
+ predicate = cb(predicate, context);
|
|
|
+ var length = getLength(array);
|
|
|
+ var index = dir > 0 ? 0 : length - 1;
|
|
|
+ for (; index >= 0 && index < length; index += dir) {
|
|
|
+ if (predicate(array[index], index, array)) return index;
|
|
|
+ }
|
|
|
+ return -1;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns the first index on an array-like that passes a truth test.
|
|
|
+ var findIndex = createPredicateIndexFinder(1);
|
|
|
+
|
|
|
+ // Returns the last index on an array-like that passes a truth test.
|
|
|
+ var findLastIndex = createPredicateIndexFinder(-1);
|
|
|
+
|
|
|
+ // Use a comparator function to figure out the smallest index at which
|
|
|
+ // an object should be inserted so as to maintain order. Uses binary search.
|
|
|
+ function sortedIndex(array, obj, iteratee, context) {
|
|
|
+ iteratee = cb(iteratee, context, 1);
|
|
|
+ var value = iteratee(obj);
|
|
|
+ var low = 0, high = getLength(array);
|
|
|
+ while (low < high) {
|
|
|
+ var mid = Math.floor((low + high) / 2);
|
|
|
+ if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
|
|
|
+ }
|
|
|
+ return low;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal function to generate the `_.indexOf` and `_.lastIndexOf` functions.
|
|
|
+ function createIndexFinder(dir, predicateFind, sortedIndex) {
|
|
|
+ return function(array, item, idx) {
|
|
|
+ var i = 0, length = getLength(array);
|
|
|
+ if (typeof idx == 'number') {
|
|
|
+ if (dir > 0) {
|
|
|
+ i = idx >= 0 ? idx : Math.max(idx + length, i);
|
|
|
+ } else {
|
|
|
+ length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
|
|
|
+ }
|
|
|
+ } else if (sortedIndex && idx && length) {
|
|
|
+ idx = sortedIndex(array, item);
|
|
|
+ return array[idx] === item ? idx : -1;
|
|
|
+ }
|
|
|
+ if (item !== item) {
|
|
|
+ idx = predicateFind(slice.call(array, i, length), isNaN$1);
|
|
|
+ return idx >= 0 ? idx + i : -1;
|
|
|
+ }
|
|
|
+ for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
|
|
|
+ if (array[idx] === item) return idx;
|
|
|
+ }
|
|
|
+ return -1;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return the position of the first occurrence of an item in an array,
|
|
|
+ // or -1 if the item is not included in the array.
|
|
|
+ // If the array is large and already in sort order, pass `true`
|
|
|
+ // for **isSorted** to use binary search.
|
|
|
+ var indexOf = createIndexFinder(1, findIndex, sortedIndex);
|
|
|
+
|
|
|
+ // Return the position of the last occurrence of an item in an array,
|
|
|
+ // or -1 if the item is not included in the array.
|
|
|
+ var lastIndexOf = createIndexFinder(-1, findLastIndex);
|
|
|
+
|
|
|
+ // Return the first value which passes a truth test.
|
|
|
+ function find(obj, predicate, context) {
|
|
|
+ var keyFinder = isArrayLike(obj) ? findIndex : findKey;
|
|
|
+ var key = keyFinder(obj, predicate, context);
|
|
|
+ if (key !== void 0 && key !== -1) return obj[key];
|
|
|
+ }
|
|
|
+
|
|
|
+ // Convenience version of a common use case of `_.find`: getting the first
|
|
|
+ // object containing specific `key:value` pairs.
|
|
|
+ function findWhere(obj, attrs) {
|
|
|
+ return find(obj, matcher(attrs));
|
|
|
+ }
|
|
|
+
|
|
|
+ // The cornerstone for collection functions, an `each`
|
|
|
+ // implementation, aka `forEach`.
|
|
|
+ // Handles raw objects in addition to array-likes. Treats all
|
|
|
+ // sparse array-likes as if they were dense.
|
|
|
+ function each(obj, iteratee, context) {
|
|
|
+ iteratee = optimizeCb(iteratee, context);
|
|
|
+ var i, length;
|
|
|
+ if (isArrayLike(obj)) {
|
|
|
+ for (i = 0, length = obj.length; i < length; i++) {
|
|
|
+ iteratee(obj[i], i, obj);
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ var _keys = keys(obj);
|
|
|
+ for (i = 0, length = _keys.length; i < length; i++) {
|
|
|
+ iteratee(obj[_keys[i]], _keys[i], obj);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return obj;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return the results of applying the iteratee to each element.
|
|
|
+ function map(obj, iteratee, context) {
|
|
|
+ iteratee = cb(iteratee, context);
|
|
|
+ var _keys = !isArrayLike(obj) && keys(obj),
|
|
|
+ length = (_keys || obj).length,
|
|
|
+ results = Array(length);
|
|
|
+ for (var index = 0; index < length; index++) {
|
|
|
+ var currentKey = _keys ? _keys[index] : index;
|
|
|
+ results[index] = iteratee(obj[currentKey], currentKey, obj);
|
|
|
+ }
|
|
|
+ return results;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal helper to create a reducing function, iterating left or right.
|
|
|
+ function createReduce(dir) {
|
|
|
+ // Wrap code that reassigns argument variables in a separate function than
|
|
|
+ // the one that accesses `arguments.length` to avoid a perf hit. (#1991)
|
|
|
+ var reducer = function(obj, iteratee, memo, initial) {
|
|
|
+ var _keys = !isArrayLike(obj) && keys(obj),
|
|
|
+ length = (_keys || obj).length,
|
|
|
+ index = dir > 0 ? 0 : length - 1;
|
|
|
+ if (!initial) {
|
|
|
+ memo = obj[_keys ? _keys[index] : index];
|
|
|
+ index += dir;
|
|
|
+ }
|
|
|
+ for (; index >= 0 && index < length; index += dir) {
|
|
|
+ var currentKey = _keys ? _keys[index] : index;
|
|
|
+ memo = iteratee(memo, obj[currentKey], currentKey, obj);
|
|
|
+ }
|
|
|
+ return memo;
|
|
|
+ };
|
|
|
+
|
|
|
+ return function(obj, iteratee, memo, context) {
|
|
|
+ var initial = arguments.length >= 3;
|
|
|
+ return reducer(obj, optimizeCb(iteratee, context, 4), memo, initial);
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // **Reduce** builds up a single result from a list of values, aka `inject`,
|
|
|
+ // or `foldl`.
|
|
|
+ var reduce = createReduce(1);
|
|
|
+
|
|
|
+ // The right-associative version of reduce, also known as `foldr`.
|
|
|
+ var reduceRight = createReduce(-1);
|
|
|
+
|
|
|
+ // Return all the elements that pass a truth test.
|
|
|
+ function filter(obj, predicate, context) {
|
|
|
+ var results = [];
|
|
|
+ predicate = cb(predicate, context);
|
|
|
+ each(obj, function(value, index, list) {
|
|
|
+ if (predicate(value, index, list)) results.push(value);
|
|
|
+ });
|
|
|
+ return results;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return all the elements for which a truth test fails.
|
|
|
+ function reject(obj, predicate, context) {
|
|
|
+ return filter(obj, negate(cb(predicate)), context);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Determine whether all of the elements pass a truth test.
|
|
|
+ function every(obj, predicate, context) {
|
|
|
+ predicate = cb(predicate, context);
|
|
|
+ var _keys = !isArrayLike(obj) && keys(obj),
|
|
|
+ length = (_keys || obj).length;
|
|
|
+ for (var index = 0; index < length; index++) {
|
|
|
+ var currentKey = _keys ? _keys[index] : index;
|
|
|
+ if (!predicate(obj[currentKey], currentKey, obj)) return false;
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Determine if at least one element in the object passes a truth test.
|
|
|
+ function some(obj, predicate, context) {
|
|
|
+ predicate = cb(predicate, context);
|
|
|
+ var _keys = !isArrayLike(obj) && keys(obj),
|
|
|
+ length = (_keys || obj).length;
|
|
|
+ for (var index = 0; index < length; index++) {
|
|
|
+ var currentKey = _keys ? _keys[index] : index;
|
|
|
+ if (predicate(obj[currentKey], currentKey, obj)) return true;
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Determine if the array or object contains a given item (using `===`).
|
|
|
+ function contains(obj, item, fromIndex, guard) {
|
|
|
+ if (!isArrayLike(obj)) obj = values(obj);
|
|
|
+ if (typeof fromIndex != 'number' || guard) fromIndex = 0;
|
|
|
+ return indexOf(obj, item, fromIndex) >= 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Invoke a method (with arguments) on every item in a collection.
|
|
|
+ var invoke = restArguments(function(obj, path, args) {
|
|
|
+ var contextPath, func;
|
|
|
+ if (isFunction$1(path)) {
|
|
|
+ func = path;
|
|
|
+ } else {
|
|
|
+ path = toPath(path);
|
|
|
+ contextPath = path.slice(0, -1);
|
|
|
+ path = path[path.length - 1];
|
|
|
+ }
|
|
|
+ return map(obj, function(context) {
|
|
|
+ var method = func;
|
|
|
+ if (!method) {
|
|
|
+ if (contextPath && contextPath.length) {
|
|
|
+ context = deepGet(context, contextPath);
|
|
|
+ }
|
|
|
+ if (context == null) return void 0;
|
|
|
+ method = context[path];
|
|
|
+ }
|
|
|
+ return method == null ? method : method.apply(context, args);
|
|
|
+ });
|
|
|
+ });
|
|
|
+
|
|
|
+ // Convenience version of a common use case of `_.map`: fetching a property.
|
|
|
+ function pluck(obj, key) {
|
|
|
+ return map(obj, property(key));
|
|
|
+ }
|
|
|
+
|
|
|
+ // Convenience version of a common use case of `_.filter`: selecting only
|
|
|
+ // objects containing specific `key:value` pairs.
|
|
|
+ function where(obj, attrs) {
|
|
|
+ return filter(obj, matcher(attrs));
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return the maximum element (or element-based computation).
|
|
|
+ function max(obj, iteratee, context) {
|
|
|
+ var result = -Infinity, lastComputed = -Infinity,
|
|
|
+ value, computed;
|
|
|
+ if (iteratee == null || typeof iteratee == 'number' && typeof obj[0] != 'object' && obj != null) {
|
|
|
+ obj = isArrayLike(obj) ? obj : values(obj);
|
|
|
+ for (var i = 0, length = obj.length; i < length; i++) {
|
|
|
+ value = obj[i];
|
|
|
+ if (value != null && value > result) {
|
|
|
+ result = value;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ iteratee = cb(iteratee, context);
|
|
|
+ each(obj, function(v, index, list) {
|
|
|
+ computed = iteratee(v, index, list);
|
|
|
+ if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
|
|
|
+ result = v;
|
|
|
+ lastComputed = computed;
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return the minimum element (or element-based computation).
|
|
|
+ function min(obj, iteratee, context) {
|
|
|
+ var result = Infinity, lastComputed = Infinity,
|
|
|
+ value, computed;
|
|
|
+ if (iteratee == null || typeof iteratee == 'number' && typeof obj[0] != 'object' && obj != null) {
|
|
|
+ obj = isArrayLike(obj) ? obj : values(obj);
|
|
|
+ for (var i = 0, length = obj.length; i < length; i++) {
|
|
|
+ value = obj[i];
|
|
|
+ if (value != null && value < result) {
|
|
|
+ result = value;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ iteratee = cb(iteratee, context);
|
|
|
+ each(obj, function(v, index, list) {
|
|
|
+ computed = iteratee(v, index, list);
|
|
|
+ if (computed < lastComputed || computed === Infinity && result === Infinity) {
|
|
|
+ result = v;
|
|
|
+ lastComputed = computed;
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Sample **n** random values from a collection using the modern version of the
|
|
|
+ // [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
|
|
|
+ // If **n** is not specified, returns a single random element.
|
|
|
+ // The internal `guard` argument allows it to work with `_.map`.
|
|
|
+ function sample(obj, n, guard) {
|
|
|
+ if (n == null || guard) {
|
|
|
+ if (!isArrayLike(obj)) obj = values(obj);
|
|
|
+ return obj[random(obj.length - 1)];
|
|
|
+ }
|
|
|
+ var sample = isArrayLike(obj) ? clone(obj) : values(obj);
|
|
|
+ var length = getLength(sample);
|
|
|
+ n = Math.max(Math.min(n, length), 0);
|
|
|
+ var last = length - 1;
|
|
|
+ for (var index = 0; index < n; index++) {
|
|
|
+ var rand = random(index, last);
|
|
|
+ var temp = sample[index];
|
|
|
+ sample[index] = sample[rand];
|
|
|
+ sample[rand] = temp;
|
|
|
+ }
|
|
|
+ return sample.slice(0, n);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Shuffle a collection.
|
|
|
+ function shuffle(obj) {
|
|
|
+ return sample(obj, Infinity);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Sort the object's values by a criterion produced by an iteratee.
|
|
|
+ function sortBy(obj, iteratee, context) {
|
|
|
+ var index = 0;
|
|
|
+ iteratee = cb(iteratee, context);
|
|
|
+ return pluck(map(obj, function(value, key, list) {
|
|
|
+ return {
|
|
|
+ value: value,
|
|
|
+ index: index++,
|
|
|
+ criteria: iteratee(value, key, list)
|
|
|
+ };
|
|
|
+ }).sort(function(left, right) {
|
|
|
+ var a = left.criteria;
|
|
|
+ var b = right.criteria;
|
|
|
+ if (a !== b) {
|
|
|
+ if (a > b || a === void 0) return 1;
|
|
|
+ if (a < b || b === void 0) return -1;
|
|
|
+ }
|
|
|
+ return left.index - right.index;
|
|
|
+ }), 'value');
|
|
|
+ }
|
|
|
+
|
|
|
+ // An internal function used for aggregate "group by" operations.
|
|
|
+ function group(behavior, partition) {
|
|
|
+ return function(obj, iteratee, context) {
|
|
|
+ var result = partition ? [[], []] : {};
|
|
|
+ iteratee = cb(iteratee, context);
|
|
|
+ each(obj, function(value, index) {
|
|
|
+ var key = iteratee(value, index, obj);
|
|
|
+ behavior(result, value, key);
|
|
|
+ });
|
|
|
+ return result;
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Groups the object's values by a criterion. Pass either a string attribute
|
|
|
+ // to group by, or a function that returns the criterion.
|
|
|
+ var groupBy = group(function(result, value, key) {
|
|
|
+ if (has$1(result, key)) result[key].push(value); else result[key] = [value];
|
|
|
+ });
|
|
|
+
|
|
|
+ // Indexes the object's values by a criterion, similar to `_.groupBy`, but for
|
|
|
+ // when you know that your index values will be unique.
|
|
|
+ var indexBy = group(function(result, value, key) {
|
|
|
+ result[key] = value;
|
|
|
+ });
|
|
|
+
|
|
|
+ // Counts instances of an object that group by a certain criterion. Pass
|
|
|
+ // either a string attribute to count by, or a function that returns the
|
|
|
+ // criterion.
|
|
|
+ var countBy = group(function(result, value, key) {
|
|
|
+ if (has$1(result, key)) result[key]++; else result[key] = 1;
|
|
|
+ });
|
|
|
+
|
|
|
+ // Split a collection into two arrays: one whose elements all pass the given
|
|
|
+ // truth test, and one whose elements all do not pass the truth test.
|
|
|
+ var partition = group(function(result, value, pass) {
|
|
|
+ result[pass ? 0 : 1].push(value);
|
|
|
+ }, true);
|
|
|
+
|
|
|
+ // Safely create a real, live array from anything iterable.
|
|
|
+ var reStrSymbol = /[^\ud800-\udfff]|[\ud800-\udbff][\udc00-\udfff]|[\ud800-\udfff]/g;
|
|
|
+ function toArray(obj) {
|
|
|
+ if (!obj) return [];
|
|
|
+ if (isArray(obj)) return slice.call(obj);
|
|
|
+ if (isString(obj)) {
|
|
|
+ // Keep surrogate pair characters together.
|
|
|
+ return obj.match(reStrSymbol);
|
|
|
+ }
|
|
|
+ if (isArrayLike(obj)) return map(obj, identity);
|
|
|
+ return values(obj);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return the number of elements in a collection.
|
|
|
+ function size(obj) {
|
|
|
+ if (obj == null) return 0;
|
|
|
+ return isArrayLike(obj) ? obj.length : keys(obj).length;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Internal `_.pick` helper function to determine whether `key` is an enumerable
|
|
|
+ // property name of `obj`.
|
|
|
+ function keyInObj(value, key, obj) {
|
|
|
+ return key in obj;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Return a copy of the object only containing the allowed properties.
|
|
|
+ var pick = restArguments(function(obj, keys) {
|
|
|
+ var result = {}, iteratee = keys[0];
|
|
|
+ if (obj == null) return result;
|
|
|
+ if (isFunction$1(iteratee)) {
|
|
|
+ if (keys.length > 1) iteratee = optimizeCb(iteratee, keys[1]);
|
|
|
+ keys = allKeys(obj);
|
|
|
+ } else {
|
|
|
+ iteratee = keyInObj;
|
|
|
+ keys = flatten$1(keys, false, false);
|
|
|
+ obj = Object(obj);
|
|
|
+ }
|
|
|
+ for (var i = 0, length = keys.length; i < length; i++) {
|
|
|
+ var key = keys[i];
|
|
|
+ var value = obj[key];
|
|
|
+ if (iteratee(value, key, obj)) result[key] = value;
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ });
|
|
|
+
|
|
|
+ // Return a copy of the object without the disallowed properties.
|
|
|
+ var omit = restArguments(function(obj, keys) {
|
|
|
+ var iteratee = keys[0], context;
|
|
|
+ if (isFunction$1(iteratee)) {
|
|
|
+ iteratee = negate(iteratee);
|
|
|
+ if (keys.length > 1) context = keys[1];
|
|
|
+ } else {
|
|
|
+ keys = map(flatten$1(keys, false, false), String);
|
|
|
+ iteratee = function(value, key) {
|
|
|
+ return !contains(keys, key);
|
|
|
+ };
|
|
|
+ }
|
|
|
+ return pick(obj, iteratee, context);
|
|
|
+ });
|
|
|
+
|
|
|
+ // Returns everything but the last entry of the array. Especially useful on
|
|
|
+ // the arguments object. Passing **n** will return all the values in
|
|
|
+ // the array, excluding the last N.
|
|
|
+ function initial(array, n, guard) {
|
|
|
+ return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
|
|
|
+ }
|
|
|
+
|
|
|
+ // Get the first element of an array. Passing **n** will return the first N
|
|
|
+ // values in the array. The **guard** check allows it to work with `_.map`.
|
|
|
+ function first(array, n, guard) {
|
|
|
+ if (array == null || array.length < 1) return n == null || guard ? void 0 : [];
|
|
|
+ if (n == null || guard) return array[0];
|
|
|
+ return initial(array, array.length - n);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns everything but the first entry of the `array`. Especially useful on
|
|
|
+ // the `arguments` object. Passing an **n** will return the rest N values in the
|
|
|
+ // `array`.
|
|
|
+ function rest(array, n, guard) {
|
|
|
+ return slice.call(array, n == null || guard ? 1 : n);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Get the last element of an array. Passing **n** will return the last N
|
|
|
+ // values in the array.
|
|
|
+ function last(array, n, guard) {
|
|
|
+ if (array == null || array.length < 1) return n == null || guard ? void 0 : [];
|
|
|
+ if (n == null || guard) return array[array.length - 1];
|
|
|
+ return rest(array, Math.max(0, array.length - n));
|
|
|
+ }
|
|
|
+
|
|
|
+ // Trim out all falsy values from an array.
|
|
|
+ function compact(array) {
|
|
|
+ return filter(array, Boolean);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Flatten out an array, either recursively (by default), or up to `depth`.
|
|
|
+ // Passing `true` or `false` as `depth` means `1` or `Infinity`, respectively.
|
|
|
+ function flatten(array, depth) {
|
|
|
+ return flatten$1(array, depth, false);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Take the difference between one array and a number of other arrays.
|
|
|
+ // Only the elements present in just the first array will remain.
|
|
|
+ var difference = restArguments(function(array, rest) {
|
|
|
+ rest = flatten$1(rest, true, true);
|
|
|
+ return filter(array, function(value){
|
|
|
+ return !contains(rest, value);
|
|
|
+ });
|
|
|
+ });
|
|
|
+
|
|
|
+ // Return a version of the array that does not contain the specified value(s).
|
|
|
+ var without = restArguments(function(array, otherArrays) {
|
|
|
+ return difference(array, otherArrays);
|
|
|
+ });
|
|
|
+
|
|
|
+ // Produce a duplicate-free version of the array. If the array has already
|
|
|
+ // been sorted, you have the option of using a faster algorithm.
|
|
|
+ // The faster algorithm will not work with an iteratee if the iteratee
|
|
|
+ // is not a one-to-one function, so providing an iteratee will disable
|
|
|
+ // the faster algorithm.
|
|
|
+ function uniq(array, isSorted, iteratee, context) {
|
|
|
+ if (!isBoolean(isSorted)) {
|
|
|
+ context = iteratee;
|
|
|
+ iteratee = isSorted;
|
|
|
+ isSorted = false;
|
|
|
+ }
|
|
|
+ if (iteratee != null) iteratee = cb(iteratee, context);
|
|
|
+ var result = [];
|
|
|
+ var seen = [];
|
|
|
+ for (var i = 0, length = getLength(array); i < length; i++) {
|
|
|
+ var value = array[i],
|
|
|
+ computed = iteratee ? iteratee(value, i, array) : value;
|
|
|
+ if (isSorted && !iteratee) {
|
|
|
+ if (!i || seen !== computed) result.push(value);
|
|
|
+ seen = computed;
|
|
|
+ } else if (iteratee) {
|
|
|
+ if (!contains(seen, computed)) {
|
|
|
+ seen.push(computed);
|
|
|
+ result.push(value);
|
|
|
+ }
|
|
|
+ } else if (!contains(result, value)) {
|
|
|
+ result.push(value);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Produce an array that contains the union: each distinct element from all of
|
|
|
+ // the passed-in arrays.
|
|
|
+ var union = restArguments(function(arrays) {
|
|
|
+ return uniq(flatten$1(arrays, true, true));
|
|
|
+ });
|
|
|
+
|
|
|
+ // Produce an array that contains every item shared between all the
|
|
|
+ // passed-in arrays.
|
|
|
+ function intersection(array) {
|
|
|
+ var result = [];
|
|
|
+ var argsLength = arguments.length;
|
|
|
+ for (var i = 0, length = getLength(array); i < length; i++) {
|
|
|
+ var item = array[i];
|
|
|
+ if (contains(result, item)) continue;
|
|
|
+ var j;
|
|
|
+ for (j = 1; j < argsLength; j++) {
|
|
|
+ if (!contains(arguments[j], item)) break;
|
|
|
+ }
|
|
|
+ if (j === argsLength) result.push(item);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Complement of zip. Unzip accepts an array of arrays and groups
|
|
|
+ // each array's elements on shared indices.
|
|
|
+ function unzip(array) {
|
|
|
+ var length = array && max(array, getLength).length || 0;
|
|
|
+ var result = Array(length);
|
|
|
+
|
|
|
+ for (var index = 0; index < length; index++) {
|
|
|
+ result[index] = pluck(array, index);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Zip together multiple lists into a single array -- elements that share
|
|
|
+ // an index go together.
|
|
|
+ var zip = restArguments(unzip);
|
|
|
+
|
|
|
+ // Converts lists into objects. Pass either a single array of `[key, value]`
|
|
|
+ // pairs, or two parallel arrays of the same length -- one of keys, and one of
|
|
|
+ // the corresponding values. Passing by pairs is the reverse of `_.pairs`.
|
|
|
+ function object(list, values) {
|
|
|
+ var result = {};
|
|
|
+ for (var i = 0, length = getLength(list); i < length; i++) {
|
|
|
+ if (values) {
|
|
|
+ result[list[i]] = values[i];
|
|
|
+ } else {
|
|
|
+ result[list[i][0]] = list[i][1];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Generate an integer Array containing an arithmetic progression. A port of
|
|
|
+ // the native Python `range()` function. See
|
|
|
+ // [the Python documentation](https://docs.python.org/library/functions.html#range).
|
|
|
+ function range(start, stop, step) {
|
|
|
+ if (stop == null) {
|
|
|
+ stop = start || 0;
|
|
|
+ start = 0;
|
|
|
+ }
|
|
|
+ if (!step) {
|
|
|
+ step = stop < start ? -1 : 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ var length = Math.max(Math.ceil((stop - start) / step), 0);
|
|
|
+ var range = Array(length);
|
|
|
+
|
|
|
+ for (var idx = 0; idx < length; idx++, start += step) {
|
|
|
+ range[idx] = start;
|
|
|
+ }
|
|
|
+
|
|
|
+ return range;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Chunk a single array into multiple arrays, each containing `count` or fewer
|
|
|
+ // items.
|
|
|
+ function chunk(array, count) {
|
|
|
+ if (count == null || count < 1) return [];
|
|
|
+ var result = [];
|
|
|
+ var i = 0, length = array.length;
|
|
|
+ while (i < length) {
|
|
|
+ result.push(slice.call(array, i, i += count));
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Helper function to continue chaining intermediate results.
|
|
|
+ function chainResult(instance, obj) {
|
|
|
+ return instance._chain ? _$1(obj).chain() : obj;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Add your own custom functions to the Underscore object.
|
|
|
+ function mixin(obj) {
|
|
|
+ each(functions(obj), function(name) {
|
|
|
+ var func = _$1[name] = obj[name];
|
|
|
+ _$1.prototype[name] = function() {
|
|
|
+ var args = [this._wrapped];
|
|
|
+ push.apply(args, arguments);
|
|
|
+ return chainResult(this, func.apply(_$1, args));
|
|
|
+ };
|
|
|
+ });
|
|
|
+ return _$1;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Add all mutator `Array` functions to the wrapper.
|
|
|
+ each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
|
|
|
+ var method = ArrayProto[name];
|
|
|
+ _$1.prototype[name] = function() {
|
|
|
+ var obj = this._wrapped;
|
|
|
+ if (obj != null) {
|
|
|
+ method.apply(obj, arguments);
|
|
|
+ if ((name === 'shift' || name === 'splice') && obj.length === 0) {
|
|
|
+ delete obj[0];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return chainResult(this, obj);
|
|
|
+ };
|
|
|
+ });
|
|
|
+
|
|
|
+ // Add all accessor `Array` functions to the wrapper.
|
|
|
+ each(['concat', 'join', 'slice'], function(name) {
|
|
|
+ var method = ArrayProto[name];
|
|
|
+ _$1.prototype[name] = function() {
|
|
|
+ var obj = this._wrapped;
|
|
|
+ if (obj != null) obj = method.apply(obj, arguments);
|
|
|
+ return chainResult(this, obj);
|
|
|
+ };
|
|
|
+ });
|
|
|
+
|
|
|
+ // Named Exports
|
|
|
+
|
|
|
+ var allExports = {
|
|
|
+ __proto__: null,
|
|
|
+ VERSION: VERSION,
|
|
|
+ restArguments: restArguments,
|
|
|
+ isObject: isObject,
|
|
|
+ isNull: isNull,
|
|
|
+ isUndefined: isUndefined,
|
|
|
+ isBoolean: isBoolean,
|
|
|
+ isElement: isElement,
|
|
|
+ isString: isString,
|
|
|
+ isNumber: isNumber,
|
|
|
+ isDate: isDate,
|
|
|
+ isRegExp: isRegExp,
|
|
|
+ isError: isError,
|
|
|
+ isSymbol: isSymbol,
|
|
|
+ isArrayBuffer: isArrayBuffer,
|
|
|
+ isDataView: isDataView$1,
|
|
|
+ isArray: isArray,
|
|
|
+ isFunction: isFunction$1,
|
|
|
+ isArguments: isArguments$1,
|
|
|
+ isFinite: isFinite$1,
|
|
|
+ isNaN: isNaN$1,
|
|
|
+ isTypedArray: isTypedArray$1,
|
|
|
+ isEmpty: isEmpty,
|
|
|
+ isMatch: isMatch,
|
|
|
+ isEqual: isEqual,
|
|
|
+ isMap: isMap,
|
|
|
+ isWeakMap: isWeakMap,
|
|
|
+ isSet: isSet,
|
|
|
+ isWeakSet: isWeakSet,
|
|
|
+ keys: keys,
|
|
|
+ allKeys: allKeys,
|
|
|
+ values: values,
|
|
|
+ pairs: pairs,
|
|
|
+ invert: invert,
|
|
|
+ functions: functions,
|
|
|
+ methods: functions,
|
|
|
+ extend: extend,
|
|
|
+ extendOwn: extendOwn,
|
|
|
+ assign: extendOwn,
|
|
|
+ defaults: defaults,
|
|
|
+ create: create,
|
|
|
+ clone: clone,
|
|
|
+ tap: tap,
|
|
|
+ get: get,
|
|
|
+ has: has,
|
|
|
+ mapObject: mapObject,
|
|
|
+ identity: identity,
|
|
|
+ constant: constant,
|
|
|
+ noop: noop,
|
|
|
+ toPath: toPath$1,
|
|
|
+ property: property,
|
|
|
+ propertyOf: propertyOf,
|
|
|
+ matcher: matcher,
|
|
|
+ matches: matcher,
|
|
|
+ times: times,
|
|
|
+ random: random,
|
|
|
+ now: now,
|
|
|
+ escape: _escape,
|
|
|
+ unescape: _unescape,
|
|
|
+ templateSettings: templateSettings,
|
|
|
+ template: template,
|
|
|
+ result: result,
|
|
|
+ uniqueId: uniqueId,
|
|
|
+ chain: chain,
|
|
|
+ iteratee: iteratee,
|
|
|
+ partial: partial,
|
|
|
+ bind: bind,
|
|
|
+ bindAll: bindAll,
|
|
|
+ memoize: memoize,
|
|
|
+ delay: delay,
|
|
|
+ defer: defer,
|
|
|
+ throttle: throttle,
|
|
|
+ debounce: debounce,
|
|
|
+ wrap: wrap,
|
|
|
+ negate: negate,
|
|
|
+ compose: compose,
|
|
|
+ after: after,
|
|
|
+ before: before,
|
|
|
+ once: once,
|
|
|
+ findKey: findKey,
|
|
|
+ findIndex: findIndex,
|
|
|
+ findLastIndex: findLastIndex,
|
|
|
+ sortedIndex: sortedIndex,
|
|
|
+ indexOf: indexOf,
|
|
|
+ lastIndexOf: lastIndexOf,
|
|
|
+ find: find,
|
|
|
+ detect: find,
|
|
|
+ findWhere: findWhere,
|
|
|
+ each: each,
|
|
|
+ forEach: each,
|
|
|
+ map: map,
|
|
|
+ collect: map,
|
|
|
+ reduce: reduce,
|
|
|
+ foldl: reduce,
|
|
|
+ inject: reduce,
|
|
|
+ reduceRight: reduceRight,
|
|
|
+ foldr: reduceRight,
|
|
|
+ filter: filter,
|
|
|
+ select: filter,
|
|
|
+ reject: reject,
|
|
|
+ every: every,
|
|
|
+ all: every,
|
|
|
+ some: some,
|
|
|
+ any: some,
|
|
|
+ contains: contains,
|
|
|
+ includes: contains,
|
|
|
+ include: contains,
|
|
|
+ invoke: invoke,
|
|
|
+ pluck: pluck,
|
|
|
+ where: where,
|
|
|
+ max: max,
|
|
|
+ min: min,
|
|
|
+ shuffle: shuffle,
|
|
|
+ sample: sample,
|
|
|
+ sortBy: sortBy,
|
|
|
+ groupBy: groupBy,
|
|
|
+ indexBy: indexBy,
|
|
|
+ countBy: countBy,
|
|
|
+ partition: partition,
|
|
|
+ toArray: toArray,
|
|
|
+ size: size,
|
|
|
+ pick: pick,
|
|
|
+ omit: omit,
|
|
|
+ first: first,
|
|
|
+ head: first,
|
|
|
+ take: first,
|
|
|
+ initial: initial,
|
|
|
+ last: last,
|
|
|
+ rest: rest,
|
|
|
+ tail: rest,
|
|
|
+ drop: rest,
|
|
|
+ compact: compact,
|
|
|
+ flatten: flatten,
|
|
|
+ without: without,
|
|
|
+ uniq: uniq,
|
|
|
+ unique: uniq,
|
|
|
+ union: union,
|
|
|
+ intersection: intersection,
|
|
|
+ difference: difference,
|
|
|
+ unzip: unzip,
|
|
|
+ transpose: unzip,
|
|
|
+ zip: zip,
|
|
|
+ object: object,
|
|
|
+ range: range,
|
|
|
+ chunk: chunk,
|
|
|
+ mixin: mixin,
|
|
|
+ 'default': _$1
|
|
|
+ };
|
|
|
+
|
|
|
+ // Default Export
|
|
|
+
|
|
|
+ // Add all of the Underscore functions to the wrapper object.
|
|
|
+ var _ = mixin(allExports);
|
|
|
+ // Legacy Node.js API.
|
|
|
+ _._ = _;
|
|
|
+
|
|
|
+ return _;
|
|
|
+
|
|
|
+})));
|
|
|
+//# sourceMappingURL=underscore-umd.js.map
|
afeiszli