typescript ServiceContainer.ts

Posted 2021-05-21

import UnknownServiceError = require('./error/UnknownServiceError');
import clone = require('../../function/clone');
import HashMapInterface from '../../interface/HashMapInterface';

class ServiceContainer {
  private serviceMap: HashMapInterface<any> = {};

  public set<S extends Object>(serviceName: string, service: S): void {
    this.serviceMap[serviceName] = service;
  }

  public get<S extends Object>(serviceName: string): S|never {
    const service = this.serviceMap[serviceName];

    if (service === undefined) {
      throw new UnknownServiceError(serviceName);
    }

    return clone<S>(service);
  }
}

export default ServiceContainer;