parcel-bundler / parcel-bundler/lightningcss

Non stable order for keys in CSSModuleExports

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#291 2 comments 0 reactions 0 assignees View on GitHub

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area: css-modules
Dominant language
Rust
Stars
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Forks
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Description

You can play with this example: Add and remove new lines at the end of the playground and see the CSS modules output changed.

I need this to be able to better cache the JS file resulting from the CSS modules exports. This is not a big issue, I can easily resort the keys in JS.

Unrelated: Maybe the blue -> #00f transformation should only be applied when minify is on

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked playground example and reproduce how adding or removing trailing newlines changes the CSS modules output. Trace the CSSModuleExports output ordering and determine how to make the keys stable; done means equivalent input changes no longer alter their order. The note about blue becoming #00f is unrelated.

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
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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