publish.yml

name: Release to npm

on:
  push:
    branches: [main]
    paths:
      - "package.json"

jobs:
  release:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v6
        with:
          node-version-file: .node-version
          registry-url: "https://registry.npmjs.org/"

      - name: Install dependencies
        run: npm ci

      - name: Compare package version
        id: version_check
        run: |
          VERSION=$(jq -r '.version' package.json)
          PREV_VERSION=$(git show HEAD~1:package.json | jq -r '.version')
          echo "current=$VERSION" >> "$GITHUB_OUTPUT"
          echo "previous=$PREV_VERSION" >> "$GITHUB_OUTPUT"
          if [ "$VERSION" = "$PREV_VERSION" ]; then
            echo "No version change. Skipping publish."
            exit 0
          fi

      - name: Build
        run: npm run build

      - name: Publish to npm
        run: npm publish --access public
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}