tor-browser

The Tor Browser
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dflt-ary-ptrn-rest-init-ary.js (1807B)

      1 // |reftest| error:SyntaxError
      2 // This file was procedurally generated from the following sources:
      3 // - src/dstr-binding/ary-ptrn-rest-init-ary.case
      4 // - src/dstr-binding/default/arrow-function-dflt.template
      5 /*---
      6 description: Rest element (nested array pattern) does not support initializer (arrow function expression (default parameter))
      7 esid: sec-arrow-function-definitions-runtime-semantics-evaluation
      8 features: [destructuring-binding, default-parameters]
      9 flags: [generated]
     10 negative:
     11  phase: parse
     12  type: SyntaxError
     13 info: |
     14    ArrowFunction : ArrowParameters => ConciseBody
     15 
     16    [...]
     17    4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
     18    [...]
     19 
     20    9.2.1 [[Call]] ( thisArgument, argumentsList)
     21 
     22    [...]
     23    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     24    [...]
     25 
     26    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     27 
     28    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     29    [...]
     30 
     31    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     32 
     33    [...]
     34    23. Let iteratorRecord be Record {[[iterator]]:
     35        CreateListIterator(argumentsList), [[done]]: false}.
     36    24. If hasDuplicates is true, then
     37        [...]
     38    25. Else,
     39        b. Let formalStatus be IteratorBindingInitialization for formals with
     40           iteratorRecord and env as arguments.
     41    [...]
     42 
     43    13.3.3 Destructuring Binding Patterns
     44    ArrayBindingPattern[Yield] :
     45        [ Elisionopt BindingRestElement[?Yield]opt ]
     46        [ BindingElementList[?Yield] ]
     47        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
     48 ---*/
     49 $DONOTEVALUATE();
     50 
     51 var callCount = 0;
     52 var f;
     53 f = ([...[ x ] = []] = []) => {
     54  
     55  callCount = callCount + 1;
     56 };
     57 
     58 f();
     59 assert.sameValue(callCount, 1, 'arrow function invoked exactly once');