chore: add TS config

Author: ElisePatrikainen

tsconfig.json

@@ -1,5 +1,14 @@
 {
     "compilerOptions": {
-        "noEmit": true
-    }
-}
+      "target": "ESNext",
+      "module": "ESNext",
+      "lib": ["ESNext", "DOM"],
+      "moduleResolution": "Node",
+      "strict": true,
+      "resolveJsonModule": true,
+      "esModuleInterop": true,
+      "noEmit": true,
+      "skipLibCheck": true
+    },
+    "include": ["src"]
+}