fix sharex

app/types/lib.ts

@@ -0,0 +1,18 @@
+declare global {
+  namespace Express {
+    interface User {
+      username: string;
+      id?: string;
+    }
+  }
+}
+
+export function extension(str: String){
+	let file = str.split("/").pop();
+	return [file.substr(0,file.lastIndexOf(".")),file.substr(file.lastIndexOf("."),file.length).toLowerCase()];
+}
+
+export interface User {
+  username: string;
+  id?: string;
+}