name: Publish to NPM

on:
  push:
    tags:
      - 'v*.*.*'

jobs:
  build:

    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [12.x]

    steps:
      - uses: actions/checkout@v2
      - name: Set env
        run: echo "RELEASE_VERSION=${GITHUB_REF:10}" >> $GITHUB_ENV
      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v1
        with:
          always-auth: true
          node-version: ${{ matrix.node-version }}
      - name: Publish
        run: |
          yarn
          yarn publish --new-version ${RELEASE_VERSION/v}
        env:
          NPM_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}