name: linter

# This action works with pull requests and pushes
on:
  pull_request:

jobs:
  linter:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1
        with:
          node-version: 9.8.0
      - name: Install
        run: npm install
      - name: Run ESLint on changed files
        uses: tj-actions/eslint-changed-files@v4
        with:
          config-path: '.eslintrc.js'
          ignore-path: '.eslintignore'
          extensions: 'ts,tsx,js,jsx'