mirror of
https://github.com/whoisclebs/lodash.git
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96 lines
2.6 KiB
JavaScript
96 lines
2.6 KiB
JavaScript
/**
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* lodash 4.0.0 (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 baseIsMatch = require('lodash._baseismatch'),
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toPairs = require('lodash.topairs');
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/**
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* Gets the property names, values, and compare flags of `object`.
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*
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* @private
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* @param {Object} object The object to query.
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* @returns {Array} Returns the match data of `object`.
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*/
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function getMatchData(object) {
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var result = toPairs(object),
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length = result.length;
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while (length--) {
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result[length][2] = isStrictComparable(result[length][1]);
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}
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return result;
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}
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/**
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* Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
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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` if suitable for strict
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* equality comparisons, else `false`.
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*/
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function isStrictComparable(value) {
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return value === value && !isObject(value);
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}
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/**
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* Checks if `value` is the [language type](https://es5.github.io/#x8) 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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* @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(_.noop);
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* // => true
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*
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* _.isObject(null);
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* // => false
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*/
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function isObject(value) {
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var type = typeof value;
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return !!value && (type == 'object' || type == 'function');
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}
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/**
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* Performs a deep comparison between `object` and `source` to determine if
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* `object` contains equivalent property values.
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*
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* **Note:** This method supports comparing the same values as `_.isEqual`.
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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 {Object} object The object to inspect.
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* @param {Object} source The object of property values to match.
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* @returns {boolean} Returns `true` if `object` is a match, else `false`.
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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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* _.isMatch(object, { 'age': 40 });
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* // => true
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*
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* _.isMatch(object, { 'age': 36 });
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* // => false
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*/
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function isMatch(object, source) {
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return object === source || baseIsMatch(object, source, getMatchData(source));
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}
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module.exports = isMatch;
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