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