mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-14 04:37:50 +00:00
Bump to v3.2.0.
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@@ -1,13 +1,22 @@
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/**
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* lodash 3.1.0 (Custom Build) <https://lodash.com/>
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* lodash 3.2.0 (Custom Build) <https://lodash.com/>
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* Build: `lodash modern modularize exports="npm" -o ./`
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* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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* Available under MIT license <https://lodash.com/license>
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*/
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var arrayMap = require('lodash._arraymap'),
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arrayMax = require('lodash._arraymax');
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var arrayFilter = require('lodash._arrayfilter'),
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arrayMap = require('lodash._arraymap');
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/* Native method references for those with the same name as other `lodash` methods. */
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var nativeMax = Math.max;
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/**
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* Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
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* of an array-like value.
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*/
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var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
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/**
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* The base implementation of `_.property` without support for deep paths.
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@@ -26,7 +35,7 @@ function baseProperty(key) {
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* Gets the "length" property value of `object`.
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*
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* **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792)
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* in Safari on iOS 8.1 ARM64.
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* that affects Safari on at least iOS 8.1-8.3 ARM64.
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*
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* @private
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* @param {Object} object The object to query.
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@@ -34,9 +43,33 @@ function baseProperty(key) {
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*/
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var getLength = baseProperty('length');
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/**
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* Checks if `value` is array-like.
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is array-like, else `false`.
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*/
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function isArrayLike(value) {
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return value != null && isLength(getLength(value));
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}
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/**
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* Checks if `value` is a valid array-like length.
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*
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* **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength).
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
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*/
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function isLength(value) {
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return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
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}
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/**
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* This method is like `_.zip` except that it accepts an array of grouped
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* elements and creates an array regrouping the elements to their pre-`_.zip`
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* elements and creates an array regrouping the elements to their pre-zip
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* configuration.
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*
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* @static
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@@ -53,10 +86,19 @@ var getLength = baseProperty('length');
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* // => [['fred', 'barney'], [30, 40], [true, false]]
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*/
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function unzip(array) {
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if (!(array && array.length)) {
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return [];
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}
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var index = -1,
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length = (array && array.length && arrayMax(arrayMap(array, getLength))) >>> 0,
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result = Array(length);
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length = 0;
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array = arrayFilter(array, function(group) {
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if (isArrayLike(group)) {
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length = nativeMax(group.length, length);
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return true;
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}
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});
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var result = Array(length);
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while (++index < length) {
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result[index] = arrayMap(array, baseProperty(index));
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}
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