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30 lines
852 B
30 lines
852 B
'use strict'; |
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var GetIntrinsic = require('../GetIntrinsic'); |
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var callBound = require('./callBound'); |
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var $SyntaxError = GetIntrinsic('%SyntaxError%'); |
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var symToStr = callBound('Symbol.prototype.toString', true); |
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var getInferredName = require('./getInferredName'); |
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module.exports = function getSymbolDescription(symbol) { |
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if (!symToStr) { |
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throw new $SyntaxError('Symbols are not supported in this environment'); |
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} |
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var str = symToStr(symbol); // will throw if not a symbol |
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if (getInferredName) { |
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var name = getInferredName(symbol); |
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if (name === '') { return; } |
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// eslint-disable-next-line consistent-return |
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return name.slice(1, -1); // name.slice('['.length, -']'.length); |
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} |
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var desc = str.slice(7, -1); // str.slice('Symbol('.length, -')'.length); |
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if (desc) { |
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// eslint-disable-next-line consistent-return |
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return desc; |
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} |
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};
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