tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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obj-ptrn-prop-ary-init.js (2026B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-prop-ary-init.case
      3 // - src/dstr-binding/default/func-expr.template
      4 /*---
      5 description: Object binding pattern with "nested" array binding pattern using initializer (function expression)
      6 esid: sec-function-definitions-runtime-semantics-evaluation
      7 features: [destructuring-binding]
      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    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
     41 
     42    [...]
     43    3. If Initializer is present and v is undefined, then
     44       a. Let defaultValue be the result of evaluating Initializer.
     45       b. Let v be GetValue(defaultValue).
     46       c. ReturnIfAbrupt(v).
     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 f;
     53 f = function({ w: [x, y, z] = [4, 5, 6] }) {
     54  assert.sameValue(x, 4);
     55  assert.sameValue(y, 5);
     56  assert.sameValue(z, 6);
     57 
     58  assert.throws(ReferenceError, function() {
     59    w;
     60  });
     61  callCount = callCount + 1;
     62 };
     63 
     64 f({});
     65 assert.sameValue(callCount, 1, 'function invoked exactly once');
     66 
     67 reportCompare(0, 0);