diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..98ab806
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,45 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+jobs:
+  lint:
+    name: Typecheck
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Install node and npm
+        uses: volta-cli/action@v4
+      - name: Install dependencies
+        run: npm install
+      - name: Typecheck
+        run: npm run typecheck
+  format:
+    name: Check prettier
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Install node and npm
+        uses: volta-cli/action@v4
+      - name: Install dependencies
+        run: npm install
+      - name: Check formatting
+        run: npm run format:check
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Install node and npm
+        uses: volta-cli/action@v4
+      - name: Install dependencies
+        run: npm install
+      - name: Run tests
+        run: npm run test