tor-browser

The Tor Browser
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dflt-ary-ptrn-elem-id-init-unresolvable.js (1994B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
      3 // - src/dstr-binding/error/func-expr-dflt.template
      4 /*---
      5 description: Destructuring initializer is an unresolvable reference (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    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     41 
     42    SingleNameBinding : BindingIdentifier Initializeropt
     43 
     44    [...]
     45    6. If Initializer is present and v is undefined, then
     46       a. Let defaultValue be the result of evaluating Initializer.
     47       b. Let v be GetValue(defaultValue).
     48       c. ReturnIfAbrupt(v).
     49 
     50    6.2.3.1 GetValue (V)
     51 
     52    1. ReturnIfAbrupt(V).
     53    2. If Type(V) is not Reference, return V.
     54    3. Let base be GetBase(V).
     55    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
     56 ---*/
     57 
     58 var f = function([ x = unresolvableReference ] = []) {};
     59 
     60 assert.throws(ReferenceError, function() {
     61  f();
     62 });
     63 
     64 reportCompare(0, 0);