mdn / mdn/data

Consider using shepard (Bikeshed tool) to generate CSS data automatically

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api css enhancement idle
Dominant language
JavaScript
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Forks
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Avg merge
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Merged PRs (30d)
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Description

This was previously requested in bug 1189440.

The idea is to read the data defined in the CSS specifications to update the JSONs automatically using a tool called shepard:

https://api.csswg.org/shepherd/

Note from @teoli2003:

A priori this is a good idea (it could allow us to have the info before we create a CSS property page and remove the sync need to update CSSData), but we should consider several aspects:

  • performance
  • can we get all the info needed from it.
  • do we need a way to override it (place we diverge from the standard)
  • how to deal with pseudo-elements, descriptors, pseudo-classes...

But this is interesting.

Sebastian

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 by reviewing the existing JSONs and the CSS specifications exposed through the Shepherd API. Determine whether Shepherd provides the required property, pseudo-element, descriptor, and pseudo-class data, and how performance and project-specific overrides would work. Done means an agreed automatic update path that covers these cases without a manual synchronization step.

Written by the indexing model from the issue text.

Assessment

Tech stack
css
Domain
tooling, web-dev
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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