BJ_web_developers / dyitoc

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node_modules/repeating/index.js 401 Bytes
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aaac7fed   liuqimichale   add 
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  '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;
  };