name: CI

on:
  push:
    branches: [master]

  pull_request: # run on all PRs

jobs:
  lint:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1

      - name: Cache node_modules
        uses: actions/cache@v2
        env:
          cache-name: cache-node-modules
        with:
          path: ~/.npm
          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-build-${{ env.cache-name }}-
            ${{ runner.os }}-build-
            ${{ runner.os }}-

      - name: Install dependencies with npm
        run: npm install

      - name: Run ESLint
        run: npx eslint . --ext .js,.jsx,.ts,.tsx --max-warnings 0