Tools/domain/projections/ApplicationUpdates.ts

import DomainEvent from "../DomainEvent";
import DomainProjection from "../DomainProjection";

export type UpdateDefinition = {
  id: string;
  newVersion: string;
};

export default class ApplicationUpdates implements DomainProjection {
  private readonly pendingUpdates: UpdateDefinition[] = [];
  handle(event: DomainEvent<any>): void {
    if (event.type === "ApplicationUpdateStarted") {
      this.pendingUpdates.push(event.payload);
    }
  }

  getPendingUpdates(): UpdateDefinition[] {
    return this.pendingUpdates;
  }
}