'use strict'; /* eslint-disable es/no-symbol -- required for testing */ var V8_VERSION = require('../internals/environment-v8-version'); var fails = require('../internals/fails'); var globalThis = require('../internals/global-this'); var $String = globalThis.String; // eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing module.exports = !!Object.getOwnPropertySymbols && !fails(function () { var symbol = Symbol('symbol detection'); // Chrome 38 Symbol has incorrect toString conversion // `get-own-property-symbols` polyfill symbols converted to object are not Symbol instances // nb: Do not call `String` directly to avoid this being optimized out to `symbol+''` which will, // of course, fail. return !$String(symbol) || !(Object(symbol) instanceof Symbol) || // Chrome 38-40 symbols are not inherited from DOM collections prototypes to instances !Symbol.sham && V8_VERSION && V8_VERSION < 41; });