create a CI linter

Author: NovemLinguae

.github/workflows/linter.yml

@@ -0,0 +1,15 @@
+name: Unit Tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - run: npm run lint

package.json

@@ -1,5 +1,8 @@
 {
 	"devDependencies": {
 		"eslint-config-wikimedia": "^0.32.3"
+	},
+	"scripts": {
+		"lint": "eslint . --max-warnings=0"
 	}
 }