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35 lines
1.2 KiB
35 lines
1.2 KiB
/**
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* lodash 3.1.0 (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 1.8.2 <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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baseUniq = require('lodash._baseuniq'),
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restParam = require('lodash.restparam');
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/**
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* Creates an array of unique values, in order, of the provided arrays using
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* `SameValueZero` for equality comparisons.
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*
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* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
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* comparisons are like strict equality comparisons, e.g. `===`, except that
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* `NaN` matches `NaN`.
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*
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* @static
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* @memberOf _
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* @category Array
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* @param {...Array} [arrays] The arrays to inspect.
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* @returns {Array} Returns the new array of combined values.
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* @example
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*
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* _.union([1, 2], [4, 2], [2, 1]);
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* // => [1, 2, 4]
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*/
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var union = restParam(function(arrays) {
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return baseUniq(baseFlatten(arrays, false, true));
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});
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module.exports = union;
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