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							43 lines
						
					
					
						
							1.2 KiB
						
					
					
				
			
		
		
	
	
							43 lines
						
					
					
						
							1.2 KiB
						
					
					
				'use strict'; | 
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var GetIntrinsic = require('get-intrinsic'); | 
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var callBound = require('call-bind/callBound'); | 
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var $SyntaxError = GetIntrinsic('%SyntaxError%'); | 
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var getGlobalSymbolDescription = GetIntrinsic('%Symbol.keyFor%', true); | 
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var thisSymbolValue = callBound('%Symbol.prototype.valueOf%', true); | 
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var symToStr = callBound('Symbol.prototype.toString', true); | 
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var getInferredName = require('./getInferredName'); | 
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/* eslint-disable consistent-return */ | 
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module.exports = callBound('%Symbol.prototype.description%', true) || function getSymbolDescription(symbol) { | 
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	if (!thisSymbolValue) { | 
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		throw new $SyntaxError('Symbols are not supported in this environment'); | 
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	} | 
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	// will throw if not a symbol primitive or wrapper object | 
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	var sym = thisSymbolValue(symbol); | 
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	if (getInferredName) { | 
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		var name = getInferredName(sym); | 
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		if (name === '') { | 
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			return; | 
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		} | 
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		return name.slice(1, -1); // name.slice('['.length, -']'.length); | 
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	} | 
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	var desc; | 
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	if (getGlobalSymbolDescription) { | 
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		desc = getGlobalSymbolDescription(sym); | 
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		if (typeof desc === 'string') { | 
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			return desc; | 
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		} | 
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	} | 
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	desc = symToStr(sym).slice(7, -1); // str.slice('Symbol('.length, -')'.length); | 
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	if (desc) { | 
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		return desc; | 
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	} | 
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};
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