proto-from-ctor-realm.js

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// Copyright (C) 2019 Alexey Shvayka. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: sec-nativeerror

description: Default [[Prototype]] value derived from realm of the NewTarget.

info: |

  NativeError ( message )

  1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.

  2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%NativeErrorPrototype%", « [[ErrorData]] »).

...

  4. Return O.

  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )

...

  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).

  3. Return ObjectCreate(proto, internalSlotsList).

  GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )

...

  3. Let proto be ? Get(constructor, 'prototype').

  4. If Type(proto) is not Object, then

    a. Let realm be ? GetFunctionRealm(constructor).

    b. Set proto to realm's intrinsic object named intrinsicDefaultProto.

  5. Return proto.

features: [cross-realm, Reflect, Symbol]

---*/

var other = $262.createRealm().global;

var newTarget = new other.Function();

var err;

newTarget.prototype = undefined;

err = Reflect.construct(ReferenceError, [], newTarget);

assert.sameValue(Object.getPrototypeOf(err), other.ReferenceError.prototype, 'newTarget.prototype is undefined');

newTarget.prototype = null;

err = Reflect.construct(ReferenceError, [], newTarget);

assert.sameValue(Object.getPrototypeOf(err), other.ReferenceError.prototype, 'newTarget.prototype is null');

newTarget.prototype = false;

err = Reflect.construct(ReferenceError, [], newTarget);

assert.sameValue(Object.getPrototypeOf(err), other.ReferenceError.prototype, 'newTarget.prototype is a Boolean');

newTarget.prototype = 'str';

err = Reflect.construct(ReferenceError, [], newTarget);

assert.sameValue(Object.getPrototypeOf(err), other.ReferenceError.prototype, 'newTarget.prototype is a String');

newTarget.prototype = Symbol();

err = Reflect.construct(ReferenceError, [], newTarget);

assert.sameValue(Object.getPrototypeOf(err), other.ReferenceError.prototype, 'newTarget.prototype is a Symbol');

newTarget.prototype = NaN;

err = Reflect.construct(ReferenceError, [], newTarget);

assert.sameValue(Object.getPrototypeOf(err), other.ReferenceError.prototype, 'newTarget.prototype is a Number');

reportCompare(0, 0);