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21 lines
857 B
21 lines
857 B
'use strict'; |
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var $ = require('../internals/export'); |
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var uncurryThis = require('../internals/function-uncurry-this'); |
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var notARegExp = require('../internals/not-a-regexp'); |
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var requireObjectCoercible = require('../internals/require-object-coercible'); |
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var toString = require('../internals/to-string'); |
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var correctIsRegExpLogic = require('../internals/correct-is-regexp-logic'); |
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var stringIndexOf = uncurryThis(''.indexOf); |
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// `String.prototype.includes` method |
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// https://tc39.es/ecma262/#sec-string.prototype.includes |
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$({ target: 'String', proto: true, forced: !correctIsRegExpLogic('includes') }, { |
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includes: function includes(searchString /* , position = 0 */) { |
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return !!~stringIndexOf( |
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toString(requireObjectCoercible(this)), |
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toString(notARegExp(searchString)), |
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arguments.length > 1 ? arguments[1] : undefined |
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); |
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} |
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});
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