Adonis v5 Provider exemple

ETLProvider.ts

import { IocContract } from '@adonisjs/fold'

import PostsLoader from './load/Posts'

export default class ETLProvider {
  constructor (protected $container: IocContract) {
  }

  public register (): void {
    // register bindings
    this.$container.singleton('ETL/Loader/Posts', () => {
      const Track = this.$container.use('App/Models/Track').default
      const User = this.$container.use('App/Models/User').default
      const Post = this.$container.use('App/Models/Post').default
      const Helpers = this.$container.use('App/helpers').default

      return new PostsLoader(Track, User, Post, Helpers)
    })
  }

  public async boot () {
    // optionally do some initial setup
    const loader = this.$container.use('ETL/Loader/Posts')
    await loader.init()
  }
}