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