v8/test/message/fail/class-methods-private-throw-write.js

// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --harmony-private-methods

class C {
  #a() {}
  constructor() {
    this.#a = 1;
  }
}
new C;