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feat: nested CSS support #10491

Merged
merged 16 commits into from
Feb 16, 2024
Merged

feat: nested CSS support #10491

merged 16 commits into from
Feb 16, 2024

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Rich-Harris
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@Rich-Harris Rich-Harris commented Feb 16, 2024

Follow-up to #10490 (this PR should be merged into that branch before that PR is merged into main).

This implements support for nested CSS, with pruning of unused styles. Credit to @AlbertMarashi for the initial implementation of this in #9549.

Before submitting the PR, please make sure you do the following

  • It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
  • Prefix your PR title with feat:, fix:, chore:, or docs:.
  • This message body should clearly illustrate what problems it solves.
  • Ideally, include a test that fails without this PR but passes with it.

Tests and linting

  • Run the tests with pnpm test and lint the project with pnpm lint

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changeset-bot bot commented Feb 16, 2024

🦋 Changeset detected

Latest commit: 91d02cc

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
Name Type
svelte Patch

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@Rich-Harris
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found a bug, marking as draft until the morning

* fix traversal, but break some other stuff

* man this is fucken hard

* fixes

* getting closer

* be conservative for now

* tidy

* invert

* invert

* simplify

* switch

* for now

* progress

* i think it works?

* fix

* tidy up

* revert some stuff

* remove some junk

* handle weird cases

* update

* tweak

* shrink

* changeset

---------

Co-authored-by: Rich Harris <[email protected]>
@Rich-Harris Rich-Harris marked this pull request as ready for review February 16, 2024 22:30
@Rich-Harris Rich-Harris merged commit f6a54e2 into css-is Feb 16, 2024
8 checks passed
@Rich-Harris Rich-Harris deleted the css-nesting branch February 16, 2024 22:35
Rich-Harris added a commit that referenced this pull request Feb 17, 2024
* failing test for :is(...)

* simplify

* trim

* factor out truncate function

* pass stylesheet around

* recurse into :is and :where

* fix types

* fix types

* almost there

* gah so close

* tada

* changeset

* simplify

* feat: nested CSS support (#10491)

* parse nested CSS

* tests

* track parent rules

* some progress

* switch it up

* pruning

* works

* changeset

* lint

* error early on invalid nesting selector

* tidy

* note to self

* fix some specificity stuff

* failing test

* note to self

* fix: correctly scope CSS selectors with descendant combinators (#10502)

* fix traversal, but break some other stuff

* man this is fucken hard

* fixes

* getting closer

* be conservative for now

* tidy

* invert

* invert

* simplify

* switch

* for now

* progress

* i think it works?

* fix

* tidy up

* revert some stuff

* remove some junk

* handle weird cases

* update

* tweak

* shrink

* changeset

---------

Co-authored-by: Rich Harris <[email protected]>

---------

Co-authored-by: Rich Harris <[email protected]>

* Update playgrounds/sandbox/run.js

* changeset

---------

Co-authored-by: Rich Harris <[email protected]>
@AlbertMarashi
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Wohoo

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2 participants