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<a href="../index.html">all files</a> / <a href="index.html">array-back/</a> index.js
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<span class="strong">100% </span>
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<span class="strong">100% </span>
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<span class='fraction'>1/1</span>
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<span class="strong">100% </span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
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* @module array-back
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* @example
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* const arrayify = require('array-back')
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*/
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module.exports = arrayify
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/**
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* Takes any input and guarantees an array back.
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*
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* - converts array-like objects (e.g. `arguments`) to a real array
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* - converts `undefined` to an empty array
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* - converts any another other, singular value (including `null`) into an array containing that value
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* - ignores input which is already an array
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*
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* @param {*} - the input value to convert to an array
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* @returns {Array}
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* @alias module:array-back
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* @example
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* > a.arrayify(undefined)
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* []
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*
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* > a.arrayify(null)
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* [ null ]
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*
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* > a.arrayify(0)
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* [ 0 ]
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*
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* > a.arrayify([ 1, 2 ])
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* [ 1, 2 ]
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*
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* > function f(){ return a.arrayify(arguments); }
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* > f(1,2,3)
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* [ 1, 2, 3 ]
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*/
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function arrayify (input) {
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const t = require('typical')
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if (Array.isArray(input)) {
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return input
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} else {
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if (input === undefined) {
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return []
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} else if (t.isArrayLike(input)) {
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return Array.prototype.slice.call(input)
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} else {
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return [ input ]
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}
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}
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}
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</pre></td></tr>
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