| aaac7fed  liuqimichale
 
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10 |   "use strict";
  
  var replace = String.prototype.replace
    , re = /([A-Z])/g;
  
  module.exports = function () {
  	var str = replace.call(this, re, "-$1").toLowerCase();
  	if (str[0] === "-") str = str.slice(1);
  	return str;
  };
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