Add test case where iteratorbindinginitialization-bindingrestelement throws#4919
Open
Add test case where iteratorbindinginitialization-bindingrestelement throws#4919
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Hello.
This PR adds a test case where IteratorBindingInitialization of ArrayBindingPattern : [Elision? BindingRestElement] throws in step 2.
First
In IteratorBindingInitialization of ArrayBindingPattern : [Elision? BindingRestElement] step 1.a, nothing happens since value is an empty string. and in step 2, IteratorBindingInitialization of BindingRestElement : ... BindingPattern is performed.
Second
In IteratorBindingInitializatiㅐ of BindingRestElement : ... BindingPattern, empty array A is created and performs BindingInitialization of BindingPattern with arguments A and environment since iteratorRecord.[[Done]] is true.
Third
As a result of the former step, v is declared and defined as
undefinedsince iteratorRecord.[[Done]] (where iteratorRecord is GetIterator(A,sync)) is true. After that, BindingInitialization of BindingPattern : ArrayBindingPattern is performed with arguments v and environment.Fourth
In BindingInitialization of BindingPattern : ArrayBindingPattern step 1, GetIterator(value,
sync) throws TypeError since value isundefined.