test-build-artifacts.yml

name: Test Build Artifacts

on:
  push:
    branches: [master, 'feat/**', 'fix/**', 'ci/**']
  pull_request:

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        format: [cjs, esm]

    name: Artifact — ${{ matrix.format }}

    steps:
      - uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: 20.x
          cache: 'yarn'

      - name: Install dependencies
        run: yarn install --frozen-lockfile

      - name: Build
        run: yarn build

      - name: Smoke test CJS artifact
        if: matrix.format == 'cjs'
        run: |
          node -e "
            const m = require('./dist/index.js');
            const component = m.default || m;
            if (typeof component !== 'function') {
              console.error('CJS default export is not a function, got:', typeof component);
              process.exit(1);
            }
            console.log('CJS OK — default export is a function');
          "

      - name: Smoke test ESM artifact
        if: matrix.format == 'esm'
        run: |
          # Verify ES module syntax is present (export keyword) and file is non-empty.
          # A full dynamic import would require React as an ESM peer which varies by version,
          # so we validate structure and let the React-version matrix cover runtime behaviour.
          if ! grep -q "^export " dist/index.es.js; then
            echo "ESM artifact missing top-level export statement"
            exit 1
          fi
          echo "ESM OK — top-level export found"
          node -e "
            const fs = require('fs');
            const size = fs.statSync('./dist/index.es.js').size;
            if (size < 100) { console.error('ESM artifact suspiciously small:', size, 'bytes'); process.exit(1); }
            console.log('ESM artifact size OK:', size, 'bytes');
          "

      - name: Type declarations exist
        run: |
          if [ ! -f dist/index.d.ts ]; then
            echo "dist/index.d.ts is missing"
            exit 1
          fi
          echo "Type declarations OK"