real ts factory

1. AService.ts

export default abstract class AService {
  constructor () {
      console.log('service created')
  }
}

2. Log.ts

import AService from './AService'

export class Log extends AService {}

3. services.ts

// now we can export our services
// this can be replaced by a loop that get all the files in a folder and export them

export * from './Log'

4. ServiceFactory.ts

import * as Services from './services'
import AService from './AService'

export default class ServiceFactory {
  static get (name: string): AService | null {
    try {
      const service: AService = new Services[name]()
      return service
    } catch (e) {
      console.warn(`${name} is not a service`)
      return null
    }
  }
}

5. index.ts

import ServiceFactory from './ServiceFactory'

console.log(ServiceFactory.get('test'))
console.log(ServiceFactory.get('Log'))

6. >> console

test is not a service
null
service created
Log {}