aaac7fed
 liuqimichale
add
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"use strict";
var toInteger = require("../../../number/to-integer")
, value = require("../../../object/valid-value")
, isValue = require("../../../object/is-value")
, min = Math.min
, max = Math.max;
module.exports = function (searchString /*, endPosition*/) {
var self, start, endPos;
self = String(value(this));
searchString = String(searchString);
endPos = arguments[1];
start =
(isValue(endPos) ? min(max(toInteger(endPos), 0), self.length) : self.length) -
searchString.length;
return start < 0 ? false : self.indexOf(searchString, start) === start;
};
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