tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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meth-dflt-obj-ptrn-prop-obj.js (2131B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-prop-obj.case
      3 // - src/dstr-binding/default/meth-dflt.template
      4 /*---
      5 description: Object binding pattern with "nested" object binding pattern not using initializer (method (default parameter))
      6 esid: sec-runtime-semantics-definemethod
      7 features: [destructuring-binding, default-parameters]
      8 flags: [generated]
      9 info: |
     10    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
     11 
     12    [...]
     13    6. Let closure be FunctionCreate(kind, StrictFormalParameters,
     14       FunctionBody, scope, strict). If functionPrototype was passed as a
     15       parameter then pass its value as the functionPrototype optional argument
     16       of FunctionCreate.
     17    [...]
     18 
     19    9.2.1 [[Call]] ( thisArgument, argumentsList)
     20 
     21    [...]
     22    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     23    [...]
     24 
     25    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     26 
     27    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     28    [...]
     29 
     30    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     31 
     32    [...]
     33    23. Let iteratorRecord be Record {[[iterator]]:
     34        CreateListIterator(argumentsList), [[done]]: false}.
     35    24. If hasDuplicates is true, then
     36        [...]
     37    25. Else,
     38        b. Let formalStatus be IteratorBindingInitialization for formals with
     39           iteratorRecord and env as arguments.
     40    [...]
     41 
     42    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
     43 
     44    [...]
     45    3. If Initializer is present and v is undefined, then
     46       [...]
     47    4. Return the result of performing BindingInitialization for BindingPattern
     48       passing v and environment as arguments.
     49 ---*/
     50 
     51 var callCount = 0;
     52 var obj = {
     53  method({ w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: { x: undefined, z: 7 } }) {
     54    assert.sameValue(x, undefined);
     55    assert.sameValue(y, undefined);
     56    assert.sameValue(z, 7);
     57 
     58    assert.throws(ReferenceError, function() {
     59      w;
     60    });
     61    callCount = callCount + 1;
     62  }
     63 };
     64 
     65 obj.method();
     66 assert.sameValue(callCount, 1, 'method invoked exactly once');
     67 
     68 reportCompare(0, 0);