tor-browser

The Tor Browser
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static-private-method-access-on-inner-arrow-function.js (1239B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/class-elements/static-private-method-access-on-inner-arrow-function.case
      3 // - src/class-elements/default/cls-decl.template
      4 /*---
      5 description: Static private method access inside of an arrow function (field definitions in a class declaration)
      6 esid: prod-FieldDefinition
      7 features: [class-static-methods-private, class]
      8 flags: [generated]
      9 info: |
     10    PrivateFieldGet (P, O)
     11      1. Assert: P is a Private Name.
     12      2. If O is not an object, throw a TypeError exception.
     13      3. If P.[[Kind]] is "field",
     14          ...
     15      4. Perform ? PrivateBrandCheck(O, P).
     16      5. If P.[[Kind]] is "method",
     17        a. Return P.[[Value]].
     18      ...
     19 
     20    PrivateBrandCheck(O, P)
     21      1. If O.[[PrivateBrands]] does not contain an entry e such that SameValue(e, P.[[Brand]]) is true,
     22        a. Throw a TypeError exception.
     23 
     24 ---*/
     25 
     26 
     27 class C {
     28  static #f() { return 42; }
     29  static g() {
     30    const arrowFunction = () => {
     31      return this.#f();
     32    };
     33 
     34    return arrowFunction();
     35  }
     36 
     37 }
     38 
     39 assert.sameValue(C.g(), 42);
     40 assert.throws(TypeError, function() {
     41  C.g.call({});
     42 }, 'Accessed static private method from an object which did not contain it');
     43 
     44 reportCompare(0, 0);