diff --git a/services/web/tsconfig.json b/services/web/tsconfig.json
index f7c5c3fb1c..d2109f7790 100644
--- a/services/web/tsconfig.json
+++ b/services/web/tsconfig.json
@@ -16,6 +16,7 @@
     "frontend/js/**/*.*",
     "modules/**/frontend/js/**/*.*",
     "test/frontend/**/*.*",
-    "modules/**/test/frontend/**/*.*"
+    "modules/**/test/frontend/**/*.*",
+    "types"
   ]
 }
diff --git a/services/web/types/window.ts b/services/web/types/window.ts
new file mode 100644
index 0000000000..36972f87da
--- /dev/null
+++ b/services/web/types/window.ts
@@ -0,0 +1,10 @@
+declare global {
+  // eslint-disable-next-line no-unused-vars
+  interface Window {
+    sl_debugging: boolean
+    user: {
+      id: string
+    }
+  }
+}
+export {} // pretend this is a module