node.js.yml

# Timesheets CI — runs affected tests on PRs, full suite on merge to main/develop

name: Timesheets CI

on:
  push:
    branches: ["main", "develop"]
  pull_request:
    branches: ["main", "develop"]

jobs:
  build:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [20.x]

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0 # needed for --changedSince to compare branches

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"

      - run: npm ci
      - run: npm run build --if-present

      # PRs: only run tests affected by changed files
      - name: Run affected tests (PR)
        if: github.event_name == 'pull_request'
        run: npx jest --runInBand --changedSince=origin/${{ github.base_ref }}

      # Pushes to main/develop: run the full test suite
      - name: Run all tests (push)
        if: github.event_name == 'push'
        run: npm test