Unexpected type error in websockets when compiling nest js project - websocket

Question

Below is my code
I tried to set a web socket gateway as below.
events.gateways.ts
import {
MessageBody,
SubscribeMessage,
WebSocketGateway,
WebSocketServer,
} from "#nestjs/websockets";
import { Server } from "socket.io";
#WebSocketGateway({
cors: {
origin: "http://localhost:3000",
},
})
export class EventsGateway {
#WebSocketServer()
server: Server;
#SubscribeMessage("events")
handleEvent(#MessageBody() data: string): string {
return data;
}
}
I set above gateway as a provider to a module.
events.module.ts
import { Module } from "#nestjs/common";
import { EventsGateway } from "./events.gateway";
#Module({
providers: [EventsGateway],
})
export class EventsModule {}
Fianllt, i imported above module to the app.module.ts and now I am getting the error
app.module.ts
import { Module } from "#nestjs/common";
import { AppController } from "./app.controller";
import { AppService } from "./app.service";
import { APP_FILTER } from "#nestjs/core";
import { AllExceptionFilter } from "./all-exception.filter";
import { ConfigModule } from "#nestjs/config";
import { TypeOrmModule } from "#nestjs/typeorm";
import { Student } from "./student/entities/student.entity";
import { EventsModule } from "./events/events.module";
#Module({
imports: [
ConfigModule.forRoot(),
TypeOrmModule.forRoot({
type: "postgres",
host: process.env.DB_HOST,
port: parseInt(process.env.DB_PORT as string) | 5432,
username: process.env.DB_USERNAME,
password: process.env.DB_PASSWORD,
database: process.env.DB_DATABASE,
entities: [Student],
synchronize: true,
}),
EventsModule,
],
controllers: [AppController],
providers: [
{
provide: APP_FILTER,
useClass: AllExceptionFilter,
},
AppService,
],
})
export class AppModule {}
This is the error I am keep getting.
TypeError: this.graphInspector.insertEntrypointDefinition is not a function
at /home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/web-sockets-controller.js:108:33
at Array.forEach (<anonymous>)
at WebSocketsController.inspectEntrypointDefinitions (/home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/web-sockets-controller.js:106:25)
at WebSocketsController.subscribeToServerEvents (/home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/web-sockets-controller.js:39:14)
at WebSocketsController.connectGatewayToServer (/home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/web-sockets-controller.js:30:14)
at SocketModule.connectGatewayToServer (/home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/socket-module.js:47:35)
at /home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/socket-module.js:36:38
at IteratorWithOperators.forEach (/home/Desktop/New Folder/nest_try_1/node_modules/iterare/lib/iterate.js:157:13)
at SocketModule.connectAllGateways (/home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/socket-module.js:36:14)
at /home/Desktop/New Folder/nest_try_1/node_modules/#nestjs/websockets/socket-module.js:31:61
Node.js v19.4.0
I am follwing the documentation and I am keep getting above error.

Answer 1

you should align your dependencies, ie., if you're using #nestjs/websockets v9.3.1, #nestjs/core must be in v9.3.1 as well
Run npx nest info and check that out.
That error is because #nestjs/websockets is invoking a method added in v9.3 which depends on a method added in v9.3 of #nestjs/core as well.
btw there are closed issues on GitHub about that error: https://github.com/nestjs/nest/issues?q=is%3Aissue+sort%3Aupdated-desc+is%3Aclosed+insertEntrypointDefinition