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30 lines
1.2 KiB
30 lines
1.2 KiB
var $ = require('../internals/export'); |
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var global = require('../internals/global'); |
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var uncurryThis = require('../internals/function-uncurry-this'); |
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var toIndexedObject = require('../internals/to-indexed-object'); |
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var toString = require('../internals/to-string'); |
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var lengthOfArrayLike = require('../internals/length-of-array-like'); |
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var TypeError = global.TypeError; |
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var ArrayPrototype = Array.prototype; |
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var push = uncurryThis(ArrayPrototype.push); |
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var join = uncurryThis(ArrayPrototype.join); |
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// `String.cooked` method |
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// https://github.com/tc39/proposal-string-cooked |
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$({ target: 'String', stat: true, forced: true }, { |
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cooked: function cooked(template /* , ...substitutions */) { |
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var cookedTemplate = toIndexedObject(template); |
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var literalSegments = lengthOfArrayLike(cookedTemplate); |
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var argumentsLength = arguments.length; |
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var elements = []; |
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var i = 0; |
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while (literalSegments > i) { |
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var nextVal = cookedTemplate[i++]; |
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if (nextVal === undefined) throw TypeError('Incorrect template'); |
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push(elements, toString(nextVal)); |
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if (i === literalSegments) return join(elements, ''); |
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if (i < argumentsLength) push(elements, toString(arguments[i])); |
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} |
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} |
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});
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