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50 lines
1.8 KiB
JavaScript
50 lines
1.8 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 baseFlatten = require('lodash._baseflatten'),
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bindCallback = require('lodash._bindcallback'),
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pickByArray = require('lodash._pickbyarray'),
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pickByCallback = require('lodash._pickbycallback');
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/**
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* Creates an object composed of the picked `object` properties. Property
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* names may be specified as individual arguments or as arrays of property
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* names. If `predicate` is provided it is invoked for each property of `object`
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* picking the properties `predicate` returns truthy for. The predicate is
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* bound to `thisArg` and invoked with three arguments; (value, key, object).
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*
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* @static
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* @memberOf _
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* @category Object
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* @param {Object} object The source object.
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* @param {Function|...(string|string[])} [predicate] The function invoked per
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* iteration or property names to pick, specified as individual property
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* names or arrays of property names.
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* @param {*} [thisArg] The `this` binding of `predicate`.
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* @returns {Object} Returns the new object.
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* @example
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*
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* var object = { 'user': 'fred', 'age': 40 };
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*
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* _.pick(object, 'user');
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* // => { 'user': 'fred' }
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*
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* _.pick(object, _.isString);
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* // => { 'user': 'fred' }
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*/
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function pick(object, predicate, thisArg) {
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if (object == null) {
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return {};
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}
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return typeof predicate == 'function'
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? pickByCallback(object, bindCallback(predicate, thisArg, 3))
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: pickByArray(object, baseFlatten(arguments, false, false, 1));
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}
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module.exports = pick;
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