release.yml

name: Release

on:
  push:
    branches:
      - master

jobs:
  publish:
    runs-on: ubuntu-latest

    steps:
      - name: Check out the branch
        uses: actions/checkout@v2

      - name: Check if version was updated
        id: version_check
        uses: EndBug/version-check@master
        with:
          diff-search: true # searches all commit diffs if SemVer not included in commit message

      - name: No update detected
        if: steps.version_check.outputs.changed != 'true'
        run: 'echo "No update detected! Shutting down..."' # Shut down if no version update

      - name: Version update detected
        if: steps.version_check.outputs.changed == 'true'
        run: 'echo "Version change found! New ${{ steps.version_check.outputs.type }} version: ${{ steps.version_check.outputs.version }}"'

      - name: Read .nvmrc
        if: steps.version_check.outputs.changed == 'true'
        id: node_version
        run: echo ::set-output name=NODE_VERSION::$(cat .nvmrc)

      - name: Setup node
        if: steps.version_check.outputs.changed == 'true'
        uses: actions/setup-node@v1
        with:
          node-version: ${{ steps.node_version.outputs.NODE_VERSION }}
          registry-url: 'https://registry.npmjs.org'

      - name: Install dependencies
        if: steps.version_check.outputs.changed == 'true'
        run: npm ci

      - name: Publish package to NPM
        if: steps.version_check.outputs.changed == 'true'
        run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

      - name: Create release
        if: steps.version_check.outputs.changed == 'true'
        uses: actions/create-release@latest
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: v${{ steps.version_check.outputs.version }}
          release_name: Release v${{ steps.version_check.outputs.version }}