| 1 | module.exports = function (xs, f) {
|
| 2 | if (xs.map) return xs.map(f);
|
| 3 | var res = [];
|
| 4 | for (var i = 0; i < xs.length; i++) {
|
| 5 | var x = xs[i];
|
| 6 | if (hasOwn.call(xs, i)) res.push(f(x, i, xs));
|
| 7 | }
|
| 8 | return res;
|
| 9 | };
|
| 10 |
|
| 11 | var hasOwn = Object.prototype.hasOwnProperty;
|