tor-browser

The Tor Browser
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private-meth-dflt-obj-ptrn-rest-skip-non-enumerable.js (2781B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case
      3 // - src/dstr-binding/default/cls-decl-private-meth-dflt.template
      4 /*---
      5 description: Rest object doesn't contain non-enumerable properties (private class expression method (default parameter))
      6 esid: sec-runtime-semantics-bindingclassdeclarationevaluation
      7 features: [object-rest, class, class-methods-private, destructuring-binding, default-parameters]
      8 flags: [generated]
      9 includes: [propertyHelper.js]
     10 info: |
     11    ClassDeclaration : class BindingIdentifier ClassTail
     12 
     13    1. Let className be StringValue of BindingIdentifier.
     14    2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
     15       argument className.
     16    [...]
     17 
     18    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     19 
     20    21. For each ClassElement m in order from methods
     21        a. If IsStatic of m is false, then
     22           i. Let status be the result of performing
     23              PropertyDefinitionEvaluation for m with arguments proto and
     24              false.
     25        [...]
     26 
     27    14.3.8 Runtime Semantics: DefineMethod
     28 
     29    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
     30 
     31    [...]
     32    6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
     33       scope, strict). If functionPrototype was passed as a parameter then pass its
     34       value as the functionPrototype optional argument of FunctionCreate.
     35    [...]
     36 
     37    9.2.1 [[Call]] ( thisArgument, argumentsList)
     38 
     39    [...]
     40    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     41    [...]
     42 
     43    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     44 
     45    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     46    [...]
     47 
     48    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     49 
     50    [...]
     51    23. Let iteratorRecord be Record {[[iterator]]:
     52        CreateListIterator(argumentsList), [[done]]: false}.
     53    24. If hasDuplicates is true, then
     54        [...]
     55    25. Else,
     56        b. Let formalStatus be IteratorBindingInitialization for formals with
     57           iteratorRecord and env as arguments.
     58    [...]
     59 ---*/
     60 var o = {a: 3, b: 4};
     61 Object.defineProperty(o, "x", { value: 4, enumerable: false });
     62 
     63 var callCount = 0;
     64 class C {
     65  #method({...rest} = o) {
     66    assert.sameValue(rest.x, undefined);
     67 
     68    verifyProperty(rest, "a", {
     69      enumerable: true,
     70      writable: true,
     71      configurable: true,
     72      value: 3
     73    });
     74 
     75    verifyProperty(rest, "b", {
     76      enumerable: true,
     77      writable: true,
     78      configurable: true,
     79      value: 4
     80    });
     81    callCount = callCount + 1;
     82  }
     83 
     84  get method() {
     85    return this.#method;
     86  }
     87 };
     88 
     89 new C().method();
     90 assert.sameValue(callCount, 1, 'method invoked exactly once');
     91 
     92 reportCompare(0, 0);