[scoped-custom-element-registry] Non-string Values Are Not Properly Stringified Before Calling attributeChangedCallback in setAttribute#616
Open
oscarmarina wants to merge 1 commit intowebcomponents:masterfrom
Conversation
denilsonsa
added a commit
to denilsonsa/polyfills
that referenced
this pull request
May 7, 2025
…ute() Any value set via `setAttribute` gets converted to a plain string, because that's how HTML attributes work. However, this polyfil was missing this step, and it was passing the raw non-string value to the custom element attributeChangedCallback. This behavior is wrong, and it is a regression when compared to not using the polyfill. Fixes webcomponents#607, supersedes webcomponents#616
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
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
The patched class setAttribute calls attributeChangedCallback without converting value to a string. This can lead to unexpected behavior when passing numeric or otherwise non-string values.
Fixes #607