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83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
/**
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* lodash 4.2.0 (Custom Build) <https://lodash.com/>
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* Build: `lodash modularize exports="npm" -o ./`
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* Copyright 2012-2016 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 2009-2016 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 baseEach = require('lodash._baseeach'),
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baseFind = require('lodash._basefind'),
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baseFindIndex = require('lodash._basefindindex'),
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baseIteratee = require('lodash._baseiteratee');
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/**
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* Iterates over elements of `collection`, returning the first element
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* `predicate` returns truthy for. The predicate is invoked with three arguments:
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* (value, index|key, collection).
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*
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* @static
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* @memberOf _
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* @category Collection
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* @param {Array|Object} collection The collection to search.
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* @param {Function|Object|string} [predicate=_.identity] The function invoked per iteration.
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* @returns {*} Returns the matched element, else `undefined`.
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* @example
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*
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* var users = [
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* { 'user': 'barney', 'age': 36, 'active': true },
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* { 'user': 'fred', 'age': 40, 'active': false },
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* { 'user': 'pebbles', 'age': 1, 'active': true }
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* ];
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*
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* _.find(users, function(o) { return o.age < 40; });
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* // => object for 'barney'
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*
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* // The `_.matches` iteratee shorthand.
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* _.find(users, { 'age': 1, 'active': true });
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* // => object for 'pebbles'
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*
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* // The `_.matchesProperty` iteratee shorthand.
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* _.find(users, ['active', false]);
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* // => object for 'fred'
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*
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* // The `_.property` iteratee shorthand.
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* _.find(users, 'active');
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* // => object for 'barney'
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*/
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function find(collection, predicate) {
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predicate = baseIteratee(predicate, 3);
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if (isArray(collection)) {
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var index = baseFindIndex(collection, predicate);
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return index > -1 ? collection[index] : undefined;
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}
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return baseFind(collection, predicate, baseEach);
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}
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/**
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* Checks if `value` is classified as an `Array` object.
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*
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* @static
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* @memberOf _
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* @type {Function}
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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, else `false`.
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* @example
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*
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* _.isArray([1, 2, 3]);
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* // => true
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*
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* _.isArray(document.body.children);
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* // => false
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*
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* _.isArray('abc');
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* // => false
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*
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* _.isArray(_.noop);
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* // => false
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*/
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var isArray = Array.isArray;
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module.exports = find;
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