diff --git a/heatmap-tool/frontend/src/vite-env.d.ts b/heatmap-tool/frontend/src/vite-env.d.ts
new file mode 100644
index 00000000..b690b101
--- /dev/null
+++ b/heatmap-tool/frontend/src/vite-env.d.ts
@@ -0,0 +1,3 @@
+/// <reference types="vite/client" />
+
+declare module 'react-leaflet-heatmap-layer-v3';
diff --git a/heatmap-tool/frontend/tsconfig.app.json b/heatmap-tool/frontend/tsconfig.app.json
new file mode 100644
index 00000000..f4dce2e1
--- /dev/null
+++ b/heatmap-tool/frontend/tsconfig.app.json
@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting - Relaxed for production build stability */
+    "strict": true,
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noFallthroughCasesInSwitch": true,
+    "verbatimModuleSyntax": false
+  },
+  "include": ["src"]
+}
\ No newline at end of file