Auto detecting, non-destructive map for Object and Array

• Auto detects Object or Array and applies the appropriate operation
• Switches to native map, if available, in case of Array
• Checks for hasOwnProperty in case of Object
• Won't crash on missing arguments
• Returns original input on missing handler

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Usage:

Install with npm: npm install --save map-x

import mapx from 'map-x';

const square= value => value * value;

const arr= mapx( [1, 2, 3], square );
console.log( arr );
// [ 1, 4, 9 ]

const obj= mapx( {a: 1, b: 2, c: 3}, square );
console.log( obj );
// { a: 1, b: 4, c: 9 }

###license

MIT