Best practices to create Entities

index.ts

export type Override<Original, Override> = Pick<
Original,
  Exclude<keyof Original, keyof Override>
> &
  Override;

type PartialEntity<T, K = Entity<T>> = Override<T, Partial<K>>;

abstract class Entity<EntityType> {
  public readonly id: string;
  public readonly created_at: Date;
  public readonly updated_at: Date;

  public constructor(props: PartialEntity<EntityType>) {
    Object.assign(this, props);

    if (!props.id) {
      this.id = 'cc4ee979-8d1e-4ba3-9143-31bc6015b125';
    }

    if (!props.created_at) {
      this.created_at = new Date();
    }

    if (!props.updated_at) {
      this.updated_at = new Date();
    }

    Object.freeze(this);
  }
}

class Incident extends Entity<Incident> {
  public readonly name: string;
  public readonly description: string;
  public readonly coast: number;

  public constructor(props: PartialEntity<Incident>) {
    super(props);
    console.log(this);
  }
}

new Incident({
  name: 'Dog',
  coast: 1.7,
  description: 'Dog'
});

new Incident({
  id: '39b26e41-6462-4107-8e75-2a3042910a78',
  name: 'Run over Cat',
  description: 'The cat had an accident and was hit by a car',
  coast: 500.4,
  created_at: new Date('2020-05-02'),
  updated_at: new Date('2020-07-24')
});