tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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ary-ptrn-rest-id-iter-val-err.js (2087B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
      3 // - src/dstr-binding/error/arrow-function.template
      4 /*---
      5 description: Error forwarding when IteratorValue returns an abrupt completion (arrow function expression)
      6 esid: sec-arrow-function-definitions-runtime-semantics-evaluation
      7 features: [Symbol.iterator, destructuring-binding]
      8 flags: [generated]
      9 info: |
     10    ArrowFunction : ArrowParameters => ConciseBody
     11 
     12    [...]
     13    4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
     14    [...]
     15 
     16    9.2.1 [[Call]] ( thisArgument, argumentsList)
     17 
     18    [...]
     19    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     20    [...]
     21 
     22    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     23 
     24    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     25    [...]
     26 
     27    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     28 
     29    [...]
     30    23. Let iteratorRecord be Record {[[iterator]]:
     31        CreateListIterator(argumentsList), [[done]]: false}.
     32    24. If hasDuplicates is true, then
     33        [...]
     34    25. Else,
     35        b. Let formalStatus be IteratorBindingInitialization for formals with
     36           iteratorRecord and env as arguments.
     37    [...]
     38 
     39    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     40    BindingRestElement : ... BindingIdentifier
     41    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
     42       environment).
     43    2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
     44       [...]
     45       c. Let nextValue be IteratorValue(next).
     46       d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
     47          true.
     48       e. ReturnIfAbrupt(nextValue).
     49 
     50 ---*/
     51 var poisonedValue = Object.defineProperty({}, 'value', {
     52  get: function() {
     53    throw new Test262Error();
     54  }
     55 });
     56 var iter = {};
     57 iter[Symbol.iterator] = function() {
     58  return {
     59    next: function() {
     60      return poisonedValue;
     61    }
     62  };
     63 };
     64 
     65 var f = ([...x]) => {};
     66 
     67 assert.throws(Test262Error, function() {
     68  f(iter);
     69 });
     70 
     71 reportCompare(0, 0);