setup gh typescheck action

.github/workflows/main.yml

@@ -0,0 +1,36 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  ci:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node: [lts/*]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@master
+
+      - name: Use Node.js ${{ matrix.node }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+          cache: "pnpm"
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: typecheck
+        run: pnpm run lint
+
+      - name: build
+        run: pnpm run build