parcel-bundler / parcel-bundler/lightningcss

Wrong transpilation of logical properties

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#419 2 comments 0 reactions 0 assignees View on GitHub

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area: transpilation
Dominant language
Rust
Stars
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Forks
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Description

Same issue as https://github.com/parcel-bundler/lightningcss/issues/171

Data in table from caniuse.com (note 3) and lightningcss.dev/playground

Safari, Firefox and iOS seem to be handled correctly.

Support Chrome Edge Safari Firefox Opera iOS  Samsung
🔴 🔴 🟢* 🟢 🔴 🟢* 🔴
caniuse.com 🟡 69 79 12.1 41 56 12.2 10.1
lightningcss 🟡 - - 13 41 - 13 -
caniuse.com 🟢 89 89 15 66 76 15 15
lightningcss 🟢 87 87 15 66 62 15 14

*not sure about decimals

Related question: Is there a plan to support toggling/configuring individual syntax lowering features?

Contributor guide

Open the contributing guide

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 reproduction in the lightningcss.dev playground and compare it with the linked issue #171. Check the logical-properties support data against the reported browser targets and transpilation output. Done means the output matches the expected support boundaries for the listed browser versions.

Written by the indexing model from the issue text.

Assessment

Tech stack
css, rust
Domain
compilers, frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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