Spaces:
Running
Running
File size: 1,663 Bytes
78c921d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 |
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = global || self, global.arrayBack = factory());
}(this, function () { 'use strict';
/**
* Takes any input and guarantees an array back.
*
* - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
* - Converts `undefined` to an empty array.
* - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
* - Ignores input which is already an array.
*
* @module array-back
* @example
* > const arrayify = require('array-back')
*
* > arrayify(undefined)
* []
*
* > arrayify(null)
* [ null ]
*
* > arrayify(0)
* [ 0 ]
*
* > arrayify([ 1, 2 ])
* [ 1, 2 ]
*
* > arrayify(new Set([ 1, 2 ]))
* [ 1, 2 ]
*
* > function f(){ return arrayify(arguments); }
* > f(1,2,3)
* [ 1, 2, 3 ]
*/
function isObject (input) {
return typeof input === 'object' && input !== null
}
function isArrayLike (input) {
return isObject(input) && typeof input.length === 'number'
}
/**
* @param {*} - The input value to convert to an array
* @returns {Array}
* @alias module:array-back
*/
function arrayify (input) {
if (Array.isArray(input)) {
return input
}
if (input === undefined) {
return []
}
if (isArrayLike(input) || input instanceof Set) {
return Array.from(input)
}
return [ input ]
}
return arrayify;
}));
|