polymer3.yml

name: Polymer 3

# all pull requests
on: pull_request

jobs:
  check-dependency-tree:
    name: Check dependency tree
    runs-on: ubuntu-latest
    steps:
      - name: Set up Node 12.x
        uses: actions/setup-node@v2
        with:
          node-version: 12.x

      - name: Check out the (Polymer 2) source code
        uses: actions/checkout@v2

      - name: Install global npm dependencies
        # magi-cli, bower and polymer-modulizer are needed to run the Polymer 3 conversion step
        # web-component-tester is needed to run the test step
        run: "npm install --quiet --no-progress --global bower magi-cli web-component-tester polymer-modulizer"

      - name: Convert the source code to Polymer 3
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          magi p3-convert --out . --import-style=name

      # Using yarn instead of npm here to check that the dependency tree does not have two
      # versions of the same component. With P2 / Bower that is checked automatically, but
      # with P3 / npm it is not.
      - name: Install project npm dependencies
        run: "yarn install --flat"

      # no unit tests