Method emitEvent

packages/context/src/context.ts:200–202

* A strongly-typed method to emit context events * @param type Event type * @param event Context event

(type: string, event: T)

   * @param event Context event
   */
  emitEvent<T extends ContextEvent>(type: string, event: T) {
    this.emit(type, event);
  }

  /**
   * Emit an `error` event