👷 [#445] Enable type checking in CI

Added some missing type definitions, but not everything is there
yet.

.github/workflows/ci.yml

@@ -45,11 +45,17 @@ jobs:
 
           echo "version=${VERSION}" >> $GITHUB_OUTPUT
 
-      - name: Build Javascript
+      - name: Install dependencies
         run: |
-          echo "Building version $VITE_VERSION"
           npm ci
           npm run build:design-tokens
+
+      - name: Run type checker
+        run: npm run buid:typecheck
+
+      - name: Build Javascript
+        run: |
+          echo "Building version $VITE_VERSION"
           VITE_VERSION=${VITE_VERSION} npm run build
         env:
           VITE_VERSION: ${{ steps.build-args.outputs.version }}

package.json

@@ -70,6 +70,7 @@
   "scripts": {
     "start": "npm run build:design-tokens && vite",
     "build": "npm run build:umd && npm run build:esm && npm run build:esm-bundle",
+    "build:typecheck": "tsc --noEmit",
     "build:umd": "BUILD_TARGET=umd vite build",
     "build:esm": "BUILD_TARGET=esm vite build",
     "build:esm-bundle": "BUILD_TARGET=esm-bundle vite build",
@@ -121,6 +122,7 @@
     "@testing-library/react": "^16.2.0",
     "@testing-library/user-event": "^14.6.0",
     "@trivago/prettier-plugin-sort-imports": "^4.3.0",
+    "@types/leaflet": "^1.9.16",
     "@typescript-eslint/parser": "^8.19.0",
     "@utrecht/component-library-css": "1.0.0-alpha.604",
     "@utrecht/component-library-react": "1.0.0-alpha.353",

tsconfig.json

@@ -17,6 +17,7 @@
     "strictNullChecks": true,
     "allowSyntheticDefaultImports": true,
     "noErrorTruncation": true,
+    "allowJs": true,
     "paths": {
       "@/*": ["./*"],
       "@/sb-decorators": ["../.storybook/decorators.tsx"]