[pull] main from facebook:main#164
Merged
Merged
Conversation
Summary: To prepare for automatic effect dependencies, some codebases may want to codemod existing useEffect calls with no deps to include an explicit undefined second argument in order to preserve the "run on every render" behavior. In sufficiently large codebases, this may require a temporary enforcement period where all effects provide an explicit dependencies argument. Outside of migration, relying on a component to render can lead to real bugs, especially when working with memoization.
There seems to be some bugs still to work out in Chrome. See #33187. Additionally, since you can't really rely on this function existing across browsers, it's hard to depend on its behavior anyway. In fact, you now have a source of inconsistent behaviors across browsers to deal with. Ideally it would also be more widely spread in fake DOM implementations like JSDOM so that we can use it unconditionally. #33177. We still want to enable this since it's a great feature but maybe not until it's more widely available cross-browsers with fewer bugs.
This is the same technique we do for the client except we don't check whether this is newly created font loading to keep code small. Unfortunately, we can't use this technique for Suspensey images. They'll need to block before we call `startViewTransition` in a separate refactor. This is due to a bug in Chrome where `img.decode()` doesn't resolve until `startViewTransition` does.
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
2 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
See Commits and Changes for more details.
Created by
pull[bot] (v2.0.0-alpha.1)
Can you help keep this open source service alive? 💖 Please sponsor : )