publish.yml

name: Publish

on:
  push:
    branches: [main]

jobs:
  # Uses the above list of packages to check for new versions, and publishes them if they are new.
  npm-publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: yarn install && yarn build:mock
      - uses: actions/setup-node@v4
        with:
          node-version: 18
          registry-url: https://registry.npmjs.org

      # Check whether a package build is a new version.
      - name: Check New Version From Build
        id: check_new_version_build
        uses: PostHog/check-package-version@v2
        with:
          path: "./dist"

      # Build the package if new version is available.
      - name: Build Package
        if: steps.check_new_version_build.outputs.is-new-version == 'true'
        run: yarn build

      # Publish a package build from `dist` folder. Only runs if the package is a new version.
      - name: Publish Package From Build
        if: steps.check_new_version_build.outputs.is-new-version == 'true'
        run: cd dist && npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}