Create DBHandler

index.js

@@ -13,4 +13,5 @@ const resolvers = {
 };
 
 const server = new ApolloServer({ typeDefs, resolvers });
+
 server.listen().then(({ url }) => console.log(`Server started at ${url}`));
\ No newline at end of file

package.json

@@ -3,6 +3,7 @@
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
+  "type": "module",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "start": "node index"

src/ErrorHandler.ts

@@ -4,13 +4,17 @@ export class ErrorHandler {
 
     public static userHandler (input: any) {
 
-        if (typeof input.name !== "string")
+        if ((typeof input.name !== "string") || (!input.name.length))
             throw new Error("Invalid user name");
         
-        if (typeof input.email !== "string")
+        if ((typeof input.email !== "string") || (!input.email.length))
             throw new Error("Invalid user email");
 
+        if ((typeof input.id !== "number") || (isNaN(input.id)))
+            throw new Error("Invalid id");
+
         const newUser: UserInterface = {
+            userId: input.id,
             userName: input.name,
             userEmail: input.email
         }