Jordan Pittman ba55a445cd
Fix native ESM config loading in v3 (#18938)
Unfortunately for backwards compatibility purposes (with `loadConfig` at
least) we can't switch things to use `import(…)` because there's baked
in knowledge that the config is loaded synchronously for v3.

This PR does two things:
- Defers to `require(…)` which allows newer versions that support
`require(esm)` to work natively. This works around the need to switch to
`import(…)` for those versions.
- Allows newer versions of `postcss-load-config` enabling better
ESM+TypeScript support for PostCSS configs in the CLI.

We support v4, v5, and v6 of `postcss-load-config` simultaneously so any
of those versions should work. I've verified that newer node versions
seem to install v6 while earlier ones like Node v14 install v4 of
`postcss-load-config`. So this should be a backwards compatible change.

- [x] needs tests for `import.meta.resolve(…)`
- [x] needs tests for ESM postcss configs

Fixes #14152
Fixes #14423
2025-09-16 14:03:09 -04:00

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# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
name: CI — Stable
on:
push:
branches: [main]
pull_request:
branches: [main, v3]
permissions:
contents: read
env:
CI: true
TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
TURBO_TEAM: ${{ secrets.TURBO_TEAM }}
CACHE_PREFIX: stable
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
node-version: [14, 18, 20, 22, 24]
steps:
- uses: actions/checkout@v3
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v3
with:
node-version: ${{ matrix.node-version }}
- name: Cache node_modules
uses: actions/cache@v3
with:
path: node_modules
key: ${{ runner.os }}-${{ matrix.node-version }}-${{ env.CACHE_PREFIX }}-node_modules-${{ hashFiles('**/package-lock.json') }}
- name: Install dependencies
run: npm install
- name: Build Tailwind CSS
run: npm run build
- name: Test
run: |
npm run test || \
npm run test || \
npm run test || exit 1
- name: Lint
run: npm run style