parcel-bundler / parcel-bundler/lightningcss
Lower Newer Viewport units
Open
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- Dominant language
- Rust
- Stars
- 7.7k
- Forks
- 302
- PR merge metrics
- No merged PRs in 30d
Description
Shouldn't viewport units like dvh, svh, and lvh be compiled to vh for older browsers? (same for dvw, svw, and lvw → vw)
Here we can see that the newer CSS colors are getting updated for older browsers (chrome 90), but not the viewport height – playground
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked playground example and the repository's CSS target-compatibility transformation path; compare the existing newer-color lowering with handling of dvh, svh, lvh, dvw, svw, and lvw. Done means the reported older-browser target produces vh/vw fallbacks, with regression coverage for the example.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css, rust
- Domain
- compilers, frontend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100