Fixes on ObjectIdScalar and depreciated warning

Author: EricKit

src/app.module.ts

@@ -17,6 +17,7 @@ import { ConfigService } from './config/config.service';
           useNewUrlParser: true,
           useCreateIndex: true,
           useFindAndModify: false,
+          useUnifiedTopology: true,
         };
 
         if (configService.mongoAuthEnabled) {

src/graphql.classes.ts

@@ -66,7 +66,7 @@ export class User {
     updatedAt: Date;
     lastSeenAt: Date;
     enabled: boolean;
-    _id: MongoObjectId;
+    _id: ObjectId;
 }
 
-export type MongoObjectId = any;
+export type ObjectId = any;

src/scalars/object-id.scalar.ts

@@ -4,7 +4,7 @@ import { Types } from 'mongoose';
 
 @Scalar('ObjectId')
 export class ObjectIdScalar {
-  description = 'Mongo ObjectId scalar type';
+  description = 'MongoDB ObjectId scalar type, sent as 24 byte Hex String';
 
   parseValue(value: string) {
     return new Types.ObjectId(value); // value from the client

src/users/users.module.ts

@@ -6,16 +6,16 @@ import { UserResolver } from './users.resolvers';
 import { DateScalar } from '../scalars/date.scalar';
 import { ConfigModule } from '../config/config.module';
 import { AuthModule } from '../auth/auth.module';
+import { ObjectIdScalar } from '../scalars/object-id.scalar';
 
 @Module({
   imports: [
     MongooseModule.forFeature([{ name: 'User', schema: UserSchema }]),
-    UsersModule,
     ConfigModule,
     forwardRef(() => AuthModule),
   ],
   exports: [UsersService],
   controllers: [],
-  providers: [UsersService, UserResolver, DateScalar],
+  providers: [UsersService, UserResolver, DateScalar, ObjectIdScalar],
 })
 export class UsersModule {}

src/users/users.types.graphql

@@ -1,5 +1,5 @@
 scalar Date
-scalar MongoObjectId
+scalar ObjectId
 
 type Query {
   users: [User!]!
@@ -23,7 +23,7 @@ type User {
   updatedAt: Date!
   lastSeenAt: Date!
   enabled: Boolean!
-  _id: MongoObjectId!
+  _id: ObjectId!
 }
 
 input CreateUserInput {