rem: return this.indexOf(pattern) == 0; 
add: return this.indexOf(pattern) === 0; 
context:   startsWith: function(pattern) {    return this.indexOf(pattern) == 0;  },
meta: 3332	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3332/fc91a3e456ef26d0fe0296e4959fadfa2d081dd0/string.js/buggy/src/string.js