ci.yml

name: CI

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  main:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v5
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          node-version: 24
      # Re-use node_modules between runs until package-lock.json changes.
      - name: Cache node_modules
        id: cache-node_modules
        uses: actions/cache@v4
        with:
          path: node_modules
          key: node_modules-${{ hashFiles('package-lock.json') }}

      # Re-use ~/.elm between runs until elm.json or
      # review/elm.json changes. The Elm compiler saves downloaded Elm packages
      # to ~/.elm, and elm-tooling saves downloaded tool executables there.
      - name: Cache ~/.elm
        uses: actions/cache@v4
        with:
          path: ~/.elm
          key: elm-${{ hashFiles('elm.json', 'review/elm.json', 'example/counter/elm.json') }}

      # Install npm packages, unless we restored them from cache.
      # Since `npm ci` removes the node_modules folder before running it’s
      # important to skip this step if cache was restored.
      - name: Setup lamdera dependencies
        run: (cd example/counter && npx lamdera make src/*.elm)
      - name: npm ci
        if: steps.cache-node_modules.outputs.cache-hit != 'true'
        run: npm ci
      - name: Tests
        run: npm test
      # - name: Run elm-review
      #   run: npx elm-review
      - name: elm-format
        run: npx --no-install elm-format --validate $(git ls-files '*.elm')