tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dflt-obj-ptrn-id-trailing-comma.js (1708B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-id-trailing-comma.case
      3 // - src/dstr-binding/default/func-expr-dflt.template
      4 /*---
      5 description: Trailing comma is allowed following BindingPropertyList (function expression (default parameter))
      6 esid: sec-function-definitions-runtime-semantics-evaluation
      7 features: [destructuring-binding, default-parameters]
      8 flags: [generated]
      9 info: |
     10    FunctionExpression : function ( FormalParameters ) { FunctionBody }
     11 
     12        [...]
     13        3. Let closure be FunctionCreate(Normal, FormalParameters, FunctionBody,
     14           scope, strict).
     15        [...]
     16 
     17    9.2.1 [[Call]] ( thisArgument, argumentsList)
     18 
     19    [...]
     20    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     21    [...]
     22 
     23    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     24 
     25    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     26    [...]
     27 
     28    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     29 
     30    [...]
     31    23. Let iteratorRecord be Record {[[iterator]]:
     32        CreateListIterator(argumentsList), [[done]]: false}.
     33    24. If hasDuplicates is true, then
     34        [...]
     35    25. Else,
     36        b. Let formalStatus be IteratorBindingInitialization for formals with
     37           iteratorRecord and env as arguments.
     38    [...]
     39 
     40    13.3.3 Destructuring Binding Patterns
     41 
     42    ObjectBindingPattern[Yield] :
     43        { }
     44        { BindingPropertyList[?Yield] }
     45        { BindingPropertyList[?Yield] , }
     46 ---*/
     47 
     48 var callCount = 0;
     49 var f;
     50 f = function({ x, } = { x: 23 }) {
     51  assert.sameValue(x, 23);
     52  callCount = callCount + 1;
     53 };
     54 
     55 f();
     56 assert.sameValue(callCount, 1, 'function invoked exactly once');
     57 
     58 reportCompare(0, 0);