parcel-bundler / parcel-bundler/lightningcss
Animation property broken when using partial shorthand
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- Dominant language
- Rust
- Stars
- 7.7k
- Forks
- 302
- PR merge metrics
- No merged PRs in 30d
Description
When using a partial shorthand for the animation property, lightningcss replaces the value with none.
Expected behavior, the following is unmodified:
.foo {
animation: infinite;
}
Actual behavior, the property value becomes "none":
.foo {
animation: none;
}
When all properties are specified it behaves correctly:
.foo {
animation: 3s ease-in 1s infinite reverse both running slidein;
}
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 issue in the linked lightningcss playground with animation: infinite;, then trace the CSS animation shorthand parsing or minification path. Done means the partial shorthand remains animation: infinite; while fully specified animation values continue to behave correctly.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css, rust
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Clearly specified
- Newbie friendliness
- 68/100