perf(ssr): speed up rendering stylesheets #4924
Merged
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Outdated suggestions cannot be applied.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.
Details
Another small micro-optimization, this time in the 1-7% range:
The perf benefit here is basically just avoiding creating a lot of temporary arrays that get thrown away. I noticed we were spending a lot of time in GC.
Instead of creating arrays and
filter
ing them, we can just traverse the stylesheet arrays as-is.Does this pull request introduce a breaking change?
Does this pull request introduce an observable change?