export abstract class Assignable {
  protected data: Record<string, unknown> = {};

  public assign (da: Assignable): void {
    this.assign_object (da.get_data ());
  }


  public assign_to (da: Assignable): void {
    da.assign (this);
  }

  public assign_object (obj: Record<string, unknown>): void {
    for (const key of Object.keys (obj))
      this.data[key] = obj[key];
  }

  public get_data (): Record<string, unknown> {
    return this.data;
  }
}