I can't use services like nest js

[bobwatcherx]

I want to use the service like in nest js
but apparently not working

is there something wrong with me

cats.controller.ts

import {
 Controller, 
 Injectable,
 Get } from 'https://deno.land/x/danet/mod.ts';

import {Childservice} from './service/my.service.ts';

@Controller('cats')
export class CatsController {
	constructor(private childservice:Childservice){}

  @Get()
  findAll(): string {
    return this.childservice.Gethello()
  }
}

my.service.ts

import {
 Controller, 
 Injectable,
 SCOPE,
 Get } from 'https://deno.land/x/danet/mod.ts';



@Injectable({ scope: SCOPE.REQUEST })
export class Childservice{
	Gethello(){
		return "ini service"
	}
}

error message in browser :
{"status":500,"message":"Cannot read properties of undefined (reading 'Gethello')"}

[bobwatcherx]

and canot use useGuard
error message:
error: Uncaught SyntaxError: The requested module 'https://deno.land/x/danet/mod.ts' does not provide an export named 'UseGuards'

[Sorikairox]

About the service :

Can you show us your module?

About the UseGuards, I think you meant to use UseGuard with Guard as singular ? UseGuards does not exist