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| 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --harmony-private-class-fields |
| 6 |
| 7 // Adding the same property twice |
| 8 // TODO(bakkot) instantiating 'Base' should be an error |
| 9 { |
| 10 class Base { |
| 11 constructor() { return new Derived; } |
| 12 } |
| 13 |
| 14 class Derived extends Base { |
| 15 #a = 0; |
| 16 } |
| 17 } |
| 18 |
| 19 // Deleting a private field |
| 20 // TODO(bakkot) each of these lines should be a syntax error |
| 21 { |
| 22 class C { #a; m(){ delete #a; } } |
| 23 class D { #a; m(){ delete this.#a; } } |
| 24 } |
| 25 |
| 26 // Referencing a private field outside a class |
| 27 // TODO(bakkot) this is not spec'd to be a syntax error, but should be |
| 28 { |
| 29 () => #a; |
| 30 () => this.#a; |
| 31 } |
| 32 |
| 33 // Referencing a private field inside a class which doesn't declare it |
| 34 // TODO(bakkot) it is unclear whether or not this will be an error, see |
| 35 // https://github.com/tc39/proposal-private-fields/issues/49 |
| 36 { |
| 37 class C { |
| 38 #a; |
| 39 m(){ #b; } |
| 40 } |
| 41 } |
| 42 |
| 43 // Referencing a private field through 'eval' |
| 44 // TODO(bakkot) it is unclear whether or not this will be an error, see |
| 45 // https://github.com/tc39/proposal-private-fields/issues/47 |
| 46 { |
| 47 class C { |
| 48 #a = 0; |
| 49 m() { return eval('#a'); } |
| 50 } |
| 51 let c = new C; |
| 52 assertEquals(0, c.m()); |
| 53 } |
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