diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..10e7193
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,30 @@
+# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
+name: CI
+
+on:
+  push:
+    branches: ['main']
+  pull_request:
+    branches: ['main']
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7.0.0
+      - name: Install Node.js
+        uses: actions/setup-node@v6.4.0
+        with:
+          node-version: 22.20.0
+      - name: Install Dependencies
+        run: npm install --no-fund
+      - parallel:
+          - name: Typecheck
+            run: npm run test:types
+          - name: Lint
+            run: npm run lint
+          - name: Unit Test
+            run: npm run test:unit
+          - name: Build
+            run: npm run build
diff --git a/package.json b/package.json
index 2f5bbd5..c85a24d 100644
--- a/package.json
+++ b/package.json
@@ -6,16 +6,17 @@
   "type": "module",
   "scripts": {
     "build": "vite build",
-    "deploy": "npm run type-check && npm run lint && devvit upload",
+    "deploy": "npm run test:types && npm run lint && devvit upload",
     "dev": "devvit playtest",
     "launch": "npm run deploy && devvit publish",
     "lint": "eslint 'src/**/*.{ts,tsx}'",
     "login": "devvit login",
     "prettier": "prettier --write .",
-    "type-check": "tsc --build"
+    "test:types": "tsc --build",
+    "test:unit": "node --experimental-strip-types --no-warnings=ExperimentalWarning --test \"src/**/*.test.ts\""
   },
   "engines": {
-    "node": ">=22.2.0"
+    "node": ">=22.12.0"
   },
   "dependencies": {
     "@devvit/start": "0.13.10",
@@ -30,7 +31,7 @@
     "eslint": "10.8.0",
     "globals": "17.8.0",
     "prettier": "3.9.6",
-    "typescript": "7.0.2",
+    "typescript": "6.0.3",
     "typescript-eslint": "8.65.0",
     "vite": "8.1.5"
   }
diff --git a/src/core/nuke.ts b/src/core/nuke.ts
index be7df74..2d779ea 100644
--- a/src/core/nuke.ts
+++ b/src/core/nuke.ts
@@ -47,7 +47,7 @@ async function* getAllCommentsInPost(
 
 export async function handleNukePost(props: NukePostProps) {
   const startTime = Date.now();
-  let success = true;
+  let success: boolean;
   let message: string;
 
   const shouldLock = props.lock;
@@ -133,7 +133,7 @@ export async function handleNukePost(props: NukePostProps) {
 
 export async function handleNuke(props: NukeProps) {
   const startTime = Date.now();
-  let success = true;
+  let success: boolean;
   let message: string;
 
   const shouldLock = props.lock;