feat: update to eslint 7 compatability (#49)

BREAKING CHANGE: minimum required node version is now 14

.github/workflows/ci.yml

@@ -0,0 +1,77 @@
+name: ci
+
+on: [push, pull_request]
+
+jobs:
+  should-skip:
+    continue-on-error: true
+    runs-on: ubuntu-latest
+    # Map a step output to a job output
+    outputs:
+      should-skip-job: ${{steps.skip-check.outputs.should_skip}}
+    steps:
+      - id: skip-check
+        uses: fkirc/skip-duplicate-actions@v2.1.0
+        with:
+          github_token: ${{github.token}}
+
+  ci:
+    needs: should-skip
+    if: ${{needs.should-skip.outputs.should-skip-job != 'true' || github.ref == 'refs/heads/main'}}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+    env:
+      BROWSER_STACK_USERNAME: ${{secrets.BROWSER_STACK_USERNAME}}
+      BROWSER_STACK_ACCESS_KEY: ${{secrets.BROWSER_STACK_ACCESS_KEY}}
+    runs-on: ${{matrix.os}}
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v2
+
+    - name: Cache dependencies
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.npm
+          **/node_modules
+        key: ${{runner.os}}-npm-${{hashFiles('**/package-lock.json')}}
+        restore-keys: |
+          ${{runner.os}}-npm-
+          ${{runner.os}}-
+
+    - name: read node version from .nvmrc
+      run: echo ::set-output name=NVMRC::$(cat .nvmrc)
+      shell: bash
+      id: nvm
+
+    - name: update apt cache on linux w/o browserstack
+      run: sudo apt-get update
+      if: ${{startsWith(matrix.os, 'ubuntu') && !env.BROWSER_STACK_USERNAME}}
+
+    - name: install ffmpeg/pulseaudio for firefox on linux w/o browserstack
+      run: sudo apt-get install ffmpeg pulseaudio
+      if: ${{startsWith(matrix.os, 'ubuntu') && !env.BROWSER_STACK_USERNAME}}
+
+    - name: start pulseaudio for firefox on linux w/o browserstack
+      run: pulseaudio -D
+      if: ${{startsWith(matrix.os, 'ubuntu') && !env.BROWSER_STACK_USERNAME}}
+
+    - name: setup node
+      uses: actions/setup-node@v1
+      with:
+        node-version: '${{steps.nvm.outputs.NVMRC}}'
+
+    # turn off the default setup-node problem watchers...
+    - run: echo "::remove-matcher owner=eslint-compact::"
+    - run: echo "::remove-matcher owner=eslint-stylish::"
+    - run: echo "::remove-matcher owner=tsc::"
+
+    - name: npm install
+      run: npm i --prefer-offline --no-audit
+
+    - name: run npm test
+      uses: GabrielBB/xvfb-action@v1
+      with:
+        run: npm run test

.nvmrc

@@ -1 +1 @@
-8.12
+14