chore: check types in ci (#437)

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on: pull_request
+
+jobs:
+    test:
+        name: Test
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v3
+            - name: Setup Node
+              uses: actions/setup-node@v3
+              with:
+                  cache: npm
+            - name: Install dependencies
+              run: npm ci
+            - name: Run tests
+              run: npm test
+
+    lint:
+        name: Lint
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v3
+            - name: Setup Node
+              uses: actions/setup-node@v3
+              with:
+                  cache: npm
+            - name: Install dependencies
+              run: npm ci
+            - name: Type check
+              run: npm run check

package.json

@@ -20,6 +20,8 @@
     },
     "scripts": {
         "build": "rollup -c",
+        "check": "tsc --noEmit",
+        "check:watch": "tsc --noEmit --watch",
         "test": "ava",
         "prepare": "npm run build",
         "prepublishOnly": "npm test"