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109 lines
3.0 KiB
JavaScript
109 lines
3.0 KiB
JavaScript
/**
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* lodash 3.0.0 (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 1.7.0 <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 baseFor = require('lodash._basefor'),
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keys = require('lodash.keys');
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/**
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* Used as the maximum length of an array-like value.
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* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
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* for more details.
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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 `_.forEach` without support for callback
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* shorthands and `this` binding.
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*
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* @private
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* @param {Array|Object|string} collection The collection to iterate over.
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* @param {Function} iteratee The function invoked per iteration.
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* @returns {Array|Object|string} Returns `collection`.
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*/
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function baseEach(collection, iteratee) {
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var length = collection ? collection.length : 0;
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if (!isLength(length)) {
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return baseForOwn(collection, iteratee);
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}
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var index = -1,
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iterable = toObject(collection);
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while (++index < length) {
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if (iteratee(iterable[index], index, iterable) === false) {
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break;
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}
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}
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return collection;
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}
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/**
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* The base implementation of `_.forOwn` without support for callback
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* shorthands and `this` binding.
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*
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* @private
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* @param {Object} object The object to iterate over.
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* @param {Function} iteratee The function invoked per iteration.
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* @returns {Object} Returns `object`.
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*/
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function baseForOwn(object, iteratee) {
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return baseFor(object, iteratee, keys);
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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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* @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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* Converts `value` to an object if it is not one.
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*
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* @private
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* @param {*} value The value to process.
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* @returns {Object} Returns the object.
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*/
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function toObject(value) {
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return isObject(value) ? value : Object(value);
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}
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/**
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* Checks if `value` is the language type of `Object`.
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* (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
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*
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* **Note:** See the [ES5 spec](https://es5.github.io/#x8) for more details.
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*
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* @static
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* @memberOf _
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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 an object, else `false`.
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* @example
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*
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* _.isObject({});
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* // => true
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*
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* _.isObject([1, 2, 3]);
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* // => true
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*
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* _.isObject(1);
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* // => false
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*/
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function isObject(value) {
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// Avoid a V8 JIT bug in Chrome 19-20.
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// See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
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var type = typeof value;
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return type == 'function' || (value && type == 'object') || false;
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}
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module.exports = baseEach;
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