Bind Interface with Implementation to AdonisJS v5 (Repository Pattern)

[HungThinhIT]

Hi all, I'm trying to apply Repository Pattern inside AdonisJS v5, but I have a issue with bind interface with implementation
My User Model

\\ app\Models\User.ts
export default class User extends BaseModel {
  public static table = 'users'
  @column({ isPrimary: true })
  public id: number
  @column()
  public name: string

My Repository Interface

\\ app\Repositories\Interfaces\IUser.ts
export default interface IUser {
 getUsers(): Promise <any>;
}

My Repository Implement

\\ app\Repositories\ORM\UserRepository.ts
import IUser from "../Interfaces/IUser"

export default class UserRepository implements IUser{
  public User = require("App/Models/User")

  public async getUsers(): Promise<any> {
    return await this.User.all()
  }
}

My Controller

import type { HttpContextContract } from '@ioc:Adonis/Core/HttpContext'
import IUser from 'App/Repositories/Interfaces/IUser';

export default class UserController{

  protected repository : IUser;

  constructor (repository: IUser) {
    this.repository = repository;
  }

  public async getAllUsers({ request, response }: HttpContextContract) {
    const data = await this.repository.getUsers();
    return response.json({ users: data })
  }
}

I got this error when trying getting data (Maybe for missed bind from app provider):

{
    "message": "Cannot read properties of undefined (reading 'getUsers')",
    "stack": "TypeError: Cannot read properties of undefined (reading 'getUsers')\n....
}

And inside register function of AppProvider.ts, I don't known how to binding Interface and implement

import { ApplicationContract } from '@ioc:Adonis/Core/Application'
export default class AppProvider {
  public static needsApplication = true



  constructor(protected app: ApplicationContract) {}

  public register() {
    // Register your own bindings
    // How to bind interface with implementation
  }

  public async boot() {
    // IoC container is ready
  }

  public async ready() {
    // App is ready
  }

  public async shutdown() {
    // Cleanup, since app is going down
  }
}

(I want do same thing with Laravel ex:

public function register()
{
    $this->app->bind(
        'App\Contracts\Repositories\IUser',
        'App\Repositories\UserRepository'
    );
}

Thank you.

[thetutlage]

TypeScript interfaces are not available during runtime. So therefore you cannot use them as a runtime key or value inside your code.

You can learn about how TypeScript works from their official docs or maybe some online tutorial