Added workflow for type checks.

.github/workflows/perform-type-check.yml

@@ -0,0 +1,31 @@
+name: "Perform type cehcks"
+
+# any branch is useful for testing before a PR is submitted
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+
+jobs:
+  performTypeCheck:
+    if: |
+      (github.event_name != 'pull_request')
+      || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
+    name: perform type check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+          cache-dependency-path: |
+            src/package-lock.json
+            src/bin/doc/package-lock.json
+      -
+        name: Install all dependencies and symlink for ep_etherpad-lite
+        run: src/bin/installDeps.sh
+      - name: Perform type check
+        run: npx tsc --noEmit

src/package-lock.json

@@ -8432,6 +8432,12 @@
         "is-typed-array": "^1.1.9"
       }
     },
+    "typescript": {
+      "version": "5.3.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
+      "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
+      "dev": true
+    },
     "ueberdb2": {
       "version": "4.2.48",
       "resolved": "https://registry.npmjs.org/ueberdb2/-/ueberdb2-4.2.48.tgz",

src/package.json

@@ -79,6 +79,7 @@
     "etherpad-lite": "node/server.ts"
   },
   "devDependencies": {
+    "typescript": "^5.3.3",
     "@types/node": "^20.11.5",
     "eslint": "^8.56.0",
     "eslint-config-etherpad": "^3.0.22",