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31 lines
852 B
31 lines
852 B
4 years ago
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'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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