// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-construct-argumentslist-newtarget
description: >
If "construct" trap is null or undefined, [[Construct]] call is
properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[Construct]] ( argumentsList, newTarget )
[...]
4. Let target be O.[[ProxyTarget]].
5. Assert: IsConstructor(target) is true.
6. Let trap be ? GetMethod(handler, "construct").
7. If trap is undefined, then
a. Return ? Construct(target, argumentsList, newTarget).
features: [class, Proxy, Reflect, Reflect.construct]
---*/
class Foo {
constructor(arg) {
this.arg = arg;
}
}
var FooTarget = new Proxy(Foo, {});
var FooProxy = new Proxy(FooTarget, {
construct: null,
});
var foo = new FooProxy(1);
assert(foo instanceof Foo);
assert.sameValue(foo.arg, 1);
class Bar extends Foo {
get isBar() {
return true;
}
}
var bar = Reflect.construct(FooProxy, [2], Bar);
assert(bar instanceof Bar);
assert.sameValue(bar.arg, 2);
assert(bar.isBar);