| 'use strict'; | |
| var isFinite = require('is-finite'); | |
| module.exports = function (str, n) { | |
| if (typeof str !== 'string') { | |
| throw new TypeError('Expected `input` to be a string'); | |
| } | |
| if (n < 0 || !isFinite(n)) { | |
| throw new TypeError('Expected `count` to be a positive finite number'); | |
| } | |
| var ret = ''; | |
| do { | |
| if (n & 1) { | |
| ret += str; | |
| } | |
| str += str; | |
| } while ((n >>= 1)); | |
| return ret; | |
| }; |