'use strict'; require('../common'); const assert = require('assert'); const vm = require('vm'); const symbol = Symbol(); function Document() { this[symbol] = 'foo'; } Document.prototype.getSymbolValue = function() { return this[symbol]; }; const context = new Document(); vm.createContext(context); assert.strictEqual(context.getSymbolValue(), 'foo'); assert.strictEqual(vm.runInContext('this.getSymbolValue()', context), 'foo');