parcel-bundler / parcel-bundler/lightningcss
add warning for pseudo-elements in `:where`
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Nobody has claimed this yet.
- Dominant language
- Rust
- Stars
- 7.7k
- Forks
- 302
- PR merge metrics
- No merged PRs in 30d
Description
.language-diff :where(.inserted::before) {
content: '+';
}
is minified into
language-diff :where(){content:"+"}
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 by reproducing the provided CSS input through lightningcss's minifier, then trace how :where selectors and pseudo-elements are parsed and transformed. No source file or test is named, so locate the relevant parser or minifier tests before changing behavior. Done means the example no longer passes silently to the shown malformed output and the requested warning is covered by a regression test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css, rust
- Domain
- compilers, web-dev
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100