deploy.yml

name: Deploy
on: [push]

jobs:
  publish:
    runs-on: ubuntu-latest
    name: Publish
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      # https://github.com/cycjimmy/semantic-release-action
      - name: Semantic Release
        uses: cycjimmy/semantic-release-action@v2
        id: semantic
        with:
          branch: master
          extra_plugins: |
            @semantic-release/git
            @semantic-release/changelog
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_ACCESS_TOKEN }}
          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

      - name: Push updates to branch for major version
        # if there is a new version published, let's say v1.2.3
        # then this step will update branch "v1" to this commit
        if: steps.semantic.outputs.new_release_published == 'true'
        run: "git push https://x-access-token:${GITHUB_ACCESS_TOKEN}@github.com/${GITHUB_REPOSITORY}.git HEAD:refs/heads/v${{steps.semantic.outputs.new_release_major_version}}"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_ACCESS_TOKEN }}