Add test case where IteratorBindingInitialization-SingleNameBinding NamedEvaluation throws#4923
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Add test case where IteratorBindingInitialization-SingleNameBinding NamedEvaluation throws#4923
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…amedEvaluation throws
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Hello.
This PR adds a abrupt completion returning case of IteratorBindingInitialization of SingleNameBinding : BindingIdentifier Initializer? step 5.a.i.
In IteratorBindingInitialization of SingleNameBinding : BindingIdentifier Initializer step 5.a.i, NamedEvaluation of ClassExpression :
classClassTail is performed.In NamedEvaluation of ClasExpression:
classClassTail step 1, ClassDefinitionEvaluation of ClassTail : ClassHeritage? {ClassBody?} is performed.In ClassDefinitionEvaluation of ClassTail : ClassHeritage? {ClassBody?}, superclass is defined as GetValue(? superclassRef). And_superclassRef_ is defined as Completion(Evaluation of |ClassHeritage|). Specifically in this PR, ClassHeritage is x(
var [x = class extends x {}] = ''). However, x is not yet defined, but hoisted in the environment record remaining asundefined. So, in step 8.g, IsConstructor(superClass) returns false. As a result, ClassDefinitionEvaluation throws a TypeError.