shim.js
389 Bytes
"use strict";
var value = require("../../../object/valid-value")
, toInteger = require("../../../number/to-integer")
, max = Math.max
, min = Math.min;
module.exports = function (searchString/*, position*/) {
var start, self = String(value(this));
start = min(max(toInteger(arguments[1]), 0), self.length);
return self.indexOf(searchString, start) === start;
};