model.ts

export interface IModel {
  Id: string;
  CreatedOn: number;
}

export interface IAlgoliaModel {
  objectID: string;
  _tags?: string[];
}

export class Model implements IModel, IAlgoliaModel {
  Id: string;
  objectID: string;
  CreatedOn: number;
  _tags?: string[];

  constructor(model: IModel) {
    this.Id = model.Id;
    this.objectID = model.Id;
    this.CreatedOn = model.CreatedOn;
  }

  toJSON() {
    const obj = Object.assign({}, this) as Object;
    return { ...obj };
  }
}