| 'use strict'; |
| |
| var GetIntrinsic = require('get-intrinsic'); |
| |
| var callBound = require('call-bound'); |
| |
| var $SyntaxError = require('es-errors/syntax'); |
| var getGlobalSymbolDescription = GetIntrinsic('%Symbol.keyFor%', true); |
| /** @type {undefined | ((thisArg: symbol | Symbol) => symbol)} */ |
| var thisSymbolValue = callBound('%Symbol.prototype.valueOf%', true); |
| /** @type {undefined | ((thisArg: symbol | Symbol) => string)} */ |
| var symToStr = callBound('Symbol.prototype.toString', true); |
| /** @type {(thisArg: string, start?: number, end?: number) => string} */ |
| var $strSlice = callBound('String.prototype.slice'); |
| |
| var getInferredName = require('./getInferredName'); |
| |
| /** @type {import('.')} */ |
| /* eslint-disable consistent-return */ |
| module.exports = callBound('%Symbol.prototype.description%', true) || function getSymbolDescription(symbol) { |
| if (!thisSymbolValue) { |
| throw new $SyntaxError('Symbols are not supported in this environment'); |
| } |
| |
| // will throw if not a symbol primitive or wrapper object |
| var sym = thisSymbolValue(symbol); |
| |
| if (getInferredName) { |
| var name = getInferredName(sym); |
| if (name === '') { |
| return; |
| } |
| return name.slice(1, -1); // name.slice('['.length, -']'.length); |
| } |
| |
| var desc; |
| if (getGlobalSymbolDescription) { |
| desc = getGlobalSymbolDescription(sym); |
| if (typeof desc === 'string') { |
| return desc; |
| } |
| } |
| |
| // eslint-disable-next-line no-extra-parens |
| desc = $strSlice(/** @type {NonNullable<typeof symToStr>} */ (symToStr)(sym), 7, -1); // str.slice('Symbol('.length, -')'.length); |
| if (desc) { |
| return desc; |
| } |
| }; |