Move ModelRegister and Model into the todo.ts file

todo.ts

// import { Model } from '@mean-expert/model/index';
/**
 * @module Todo
 * @description
 * Write a useful Todo Model description
 **/

export class ModelRegister {
  constructor(Model: any, reference: any) {
    // Register reference
    Model.model = reference;
    // Register Hooks
    Object.keys(Model.hooks).forEach((hook: string) => {
      switch(Model.hooks[hook].type) {
        case 'operation':
          reference.observe(Model.hooks[hook].name, Model[hook]);
        break;
        case 'beforeRemote':
        case 'afterRemote':
          reference[Model.hooks[hook].type](Model.hooks[hook].name, Model[hook]);
        break;
        default:
          throw new Error('FireLoop: Unexpected hook type');
      }
    });
    // Register Remote Methods
    Object.keys(Model.remotes).forEach(
      (remote: string) => {
        reference[remote] = Model[remote];
        reference.remoteMethod(remote, Model.remotes[remote]);
      }
    );
  }
}


export function Model(arg: { hooks: {}, remotes: {} }) {
    function f(target: any)
    {
        function ff(reference: any)
        {
            target = Object.assign(target, arg);
            new ModelRegister(target, reference);
            return new target(reference.app)
        }
        return <any>ff;
    }
    return f
}


@Model({
  hooks: {
    beforeSave: { name: 'before save', type: 'operation' }
  },
  remotes: {
    myRemote: {
      accepts : { arg: 'id', type: 'string', required: true },
      returns : { arg: 'result', type: 'object' },
      http    : { path: '/:id/my-remote', verb: 'get' }
    }
  }
})

class Todo {
  /**
   * @method constructor
   * @description
   * Register model hooks and methods.
   */
  constructor(app: any) {}
  // Example Operation Hook
  static beforeSave(ctx: any, next: Function): void {
    console.log('Todo: Before Save');
    next();
  }
  // Example Remote Method
  static myRemote(id: string, next: Function): void {
    next(null, `My Remote Example: ${id}`);
  }
}

module.exports = Todo;