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@@ -1,2027 +0,0 @@
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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 = 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 1.12.0
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- // https://underscorejs.org
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- // (c) 2009-2020 Jeremy Ashkenas, 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 = '1.12.0';
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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(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(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(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(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 _(obj) {
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- if (obj instanceof _) return obj;
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- if (!(this instanceof _)) return new _(obj);
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- this._wrapped = obj;
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- }
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-
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- _.VERSION = VERSION;
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-
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- // Extracts the result from a wrapped and chained object.
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- _.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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- _.prototype.valueOf = _.prototype.toJSON = _.prototype.value;
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-
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- _.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 _) a = a._wrapped;
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- if (b instanceof _) 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;
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- case '[object Number]':
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- // `NaN`s are equivalent, but non-reflexive.
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|
|
- // 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(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(path) {
|
|
|
- return isArray(path) ? path : [path];
|
|
|
- }
|
|
|
- _.toPath = toPath;
|
|
|
-
|
|
|
- // Internal wrapper for `_.toPath` to enable minification.
|
|
|
- // Similar to `cb` for `_.iteratee`.
|
|
|
- function toPath$1(path) {
|
|
|
- return _.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$1(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$1(obj, path) {
|
|
|
- path = toPath$1(path);
|
|
|
- var length = path.length;
|
|
|
- for (var i = 0; i < length; i++) {
|
|
|
- var key = path[i];
|
|
|
- if (!has(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$1(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);
|
|
|
- }
|
|
|
- _.iteratee = iteratee;
|
|
|
-
|
|
|
- // The function we call internally to generate a callback. It invokes
|
|
|
- // `_.iteratee` if overridden, otherwise `baseIteratee`.
|
|
|
- function cb(value, context, argCount) {
|
|
|
- if (_.iteratee !== iteratee) return _.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 = _.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];
|
|
|
- }
|
|
|
-
|
|
|
- // 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, _.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";
|
|
|
-
|
|
|
- // If a variable is not specified, place data values in local scope.
|
|
|
- if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
|
|
|
-
|
|
|
- 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(settings.variable || 'obj', '_', source);
|
|
|
- } catch (e) {
|
|
|
- e.source = source;
|
|
|
- throw e;
|
|
|
- }
|
|
|
-
|
|
|
- var template = function(data) {
|
|
|
- return render.call(this, data, _);
|
|
|
- };
|
|
|
-
|
|
|
- // Provide the compiled source as a convenience for precompilation.
|
|
|
- var argument = settings.variable || 'obj';
|
|
|
- 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$1(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 = _(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 = _;
|
|
|
-
|
|
|
- // 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(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(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(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(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);
|
|
|
-
|
|
|
- // 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$1(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(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(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(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(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$1(array, depth) {
|
|
|
- return flatten(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(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(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 ? _(obj).chain() : obj;
|
|
|
- }
|
|
|
-
|
|
|
- // Add your own custom functions to the Underscore object.
|
|
|
- function mixin(obj) {
|
|
|
- each(functions(obj), function(name) {
|
|
|
- var func = _[name] = obj[name];
|
|
|
- _.prototype[name] = function() {
|
|
|
- var args = [this._wrapped];
|
|
|
- push.apply(args, arguments);
|
|
|
- return chainResult(this, func.apply(_, args));
|
|
|
- };
|
|
|
- });
|
|
|
- return _;
|
|
|
- }
|
|
|
-
|
|
|
- // Add all mutator `Array` functions to the wrapper.
|
|
|
- each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
|
|
|
- var method = ArrayProto[name];
|
|
|
- _.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];
|
|
|
- _.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$1,
|
|
|
- mapObject: mapObject,
|
|
|
- identity: identity,
|
|
|
- constant: constant,
|
|
|
- noop: noop,
|
|
|
- toPath: toPath,
|
|
|
- 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$1,
|
|
|
- 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': _
|
|
|
- };
|
|
|
-
|
|
|
- // Default Export
|
|
|
-
|
|
|
- // Add all of the Underscore functions to the wrapper object.
|
|
|
- var _$1 = mixin(allExports);
|
|
|
- // Legacy Node.js API.
|
|
|
- _$1._ = _$1;
|
|
|
-
|
|
|
- return _$1;
|
|
|
-
|
|
|
-})));
|
|
|
-//# sourceMappingURL=underscore.js.map
|
Alex
