mirror of
https://github.com/whoisclebs/lodash.git
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Bump to v4.0.3.
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@@ -6,7 +6,6 @@
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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*/
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var toString = require('lodash.tostring');
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/** Used as references for various `Number` constants. */
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var INFINITY = 1 / 0,
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@@ -33,6 +32,15 @@ var reIsOctal = /^0o[0-7]+$/i;
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/** Built-in method references without a dependency on `root`. */
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var freeParseInt = parseInt;
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/** Detect free variable `global` from Node.js. */
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var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
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/** Detect free variable `self`. */
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var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
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/** Used as a reference to the global object. */
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var root = freeGlobal || freeSelf || Function('return this')();
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/** Used for built-in method references. */
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var objectProto = Object.prototype;
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@@ -43,6 +51,36 @@ var objectProto = Object.prototype;
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*/
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var objectToString = objectProto.toString;
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/** Built-in value references. */
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var Symbol = root.Symbol;
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/* Built-in method references for those with the same name as other `lodash` methods. */
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var nativeMin = Math.min;
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/** Used to convert symbols to primitives and strings. */
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var symbolProto = Symbol ? Symbol.prototype : undefined,
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symbolToString = symbolProto ? symbolProto.toString : undefined;
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/**
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* The base implementation of `_.toString` which doesn't convert nullish
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* values to empty strings.
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*
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* @private
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* @param {*} value The value to process.
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* @returns {string} Returns the string.
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*/
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function baseToString(value) {
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// Exit early for strings to avoid a performance hit in some environments.
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if (typeof value == 'string') {
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return value;
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}
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if (isSymbol(value)) {
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return symbolToString ? symbolToString.call(value) : '';
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}
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var result = (value + '');
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return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
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}
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/**
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* Creates a function like `_.round`.
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*
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@@ -54,7 +92,7 @@ function createRound(methodName) {
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var func = Math[methodName];
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return function(number, precision) {
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number = toNumber(number);
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precision = toInteger(precision);
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precision = nativeMin(toInteger(precision), 292);
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if (precision) {
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// Shift with exponential notation to avoid floating-point issues.
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// See [MDN](https://mdn.io/round#Examples) for more details.
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@@ -76,8 +114,7 @@ function createRound(methodName) {
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* @since 0.1.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is correctly classified,
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* else `false`.
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* @returns {boolean} Returns `true` if `value` is a function, else `false`.
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* @example
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*
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* _.isFunction(_);
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@@ -160,8 +197,7 @@ function isObjectLike(value) {
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is correctly classified,
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* else `false`.
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* @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
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* @example
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*
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* _.isSymbol(Symbol.iterator);
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@@ -213,7 +249,7 @@ function toFinite(value) {
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/**
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* Converts `value` to an integer.
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*
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* **Note:** This function is loosely based on
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* **Note:** This method is loosely based on
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* [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger).
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*
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* @static
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@@ -287,6 +323,31 @@ function toNumber(value) {
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: (reIsBadHex.test(value) ? NAN : +value);
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}
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/**
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* Converts `value` to a string. An empty string is returned for `null`
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* and `undefined` values. The sign of `-0` is preserved.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to process.
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* @returns {string} Returns the string.
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* @example
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*
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* _.toString(null);
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* // => ''
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*
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* _.toString(-0);
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* // => '-0'
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*
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* _.toString([1, 2, 3]);
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* // => '1,2,3'
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*/
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function toString(value) {
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return value == null ? '' : baseToString(value);
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}
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/**
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* Computes `number` rounded down to `precision`.
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*
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