Flatten an array of nested arrays into a single flat array. Accepts an optional depth argument.
npm install array-flatten --save
var flatten = require('array-flatten');
flatten([1, [2, [3, [4, [5], 6], 7], 8], 9]);
//=> [1, 2, 3, 4, 5, 6, 7, 8, 9]
flatten([1, [2, [3, [4, [5], 6], 7], 8], 9], 2);
//=> [1, 2, 3, [4, [5], 6], 7, 8, 9]
(function () {
flatten(arguments); //=> [1, 2, 3]
})(1, [2, 3]);
MIT