Marking an Aggregate that just created Domain Events

The DomainEvents subject needs a clean and clear way to hold onto the Aggregates that just created Domain Events.

The markAggregateForDispatch() method takes in the AggregateRoot that just created an event, and places it into an array of markedAggregates.

// shared/domain/events/DomainEvents.ts

export class DomainEvents {
  private static handlersMap = {};
  private static markedAggregates: AggregateRoot<any>[] = [];

  /**
  * @method markAggregateForDispatch
  * @static
  * @desc Called by aggregate root objects that have created domain
  * events to eventually be dispatched when the infrastructure commits
  * the unit of work.
  */

  public static markAggregateForDispatch (aggregate: AggregateRoot<any>): void {
    const aggregateFound = !!this.findMarkedAggregateByID(aggregate.id);

    if (!aggregateFound) {
      this.markedAggregates.push(aggregate);
    }
  }

  ...
}

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