Modernize build

.eslintrc.json

@@ -0,0 +1,21 @@
+{
+  "env": {
+    "browser": true,
+    "es2021": true,
+    "node": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:react/recommended",
+    "plugin:react/jsx-runtime"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint"],
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module"
+  },
+  "root": true,
+  "rules": {}
+}

.github/workflows/main.yml

@@ -10,16 +10,19 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'npm'
 
       - name: Install
         run: npm ci --legacy-peer-deps --no-audit
 
+      - name: Check types
+        run: npm run type-check
+
       - name: Test
         run: npm test
 

functions/package.json

@@ -9,7 +9,7 @@
     "logs": "firebase functions:log"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "main": "lib/index.js",
   "dependencies": {

public/index.html → index.html

@@ -34,6 +34,10 @@
       gtag('js', new Date())
       gtag('config', 'UA-117384183-1')
     </script>
+    <script
+      type="module"
+      src="/src/index.tsx"
+    ></script>
     <noscript>Your browser does not support JavaScript.</noscript>
   </body>
 </html>