Strict mode Passingnon-Strict mode Passing
Features:
- Symbol
// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-get-map.prototype.size description: > Throws a TypeError if `this` is not an Object. info: | get Map.prototype.size 1. Let M be the this value. 2. If Type(M) is not Object, throw a TypeError exception. 3. If M does not have a [[MapData]] internal slot, throw a TypeError exception. ... features: [Symbol] ---*/ var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size'); assert.throws(TypeError, function() { descriptor.get.call(1); }); assert.throws(TypeError, function() { descriptor.get.call(false); }); assert.throws(TypeError, function() { descriptor.get.call(1); }); assert.throws(TypeError, function() { descriptor.get.call(''); }); assert.throws(TypeError, function() { descriptor.get.call(undefined); }); assert.throws(TypeError, function() { descriptor.get.call(null); }); assert.throws(TypeError, function() { descriptor.get.call(Symbol()); });