///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2002-2021, Open Design Alliance (the "Alliance").
// All rights reserved.
//
// This software and its documentation and related materials are owned by
// the Alliance. The software may only be incorporated into application
// programs owned by members of the Alliance, subject to a signed
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable
// trade secrets of the Alliance and its suppliers. The software is also
// protected by copyright law and international treaty provisions. Application
// programs incorporating this software must include the following statement
// with their copyright notices:
//
//   This application incorporates Open Design Alliance software pursuant to a
//   license agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2021 by Open Design Alliance.
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you
// acknowledge and accept the above terms.
///////////////////////////////////////////////////////////////////////////////

export interface IEvent {
  type: string;
}

export interface IEventEmitter {
  addEventListener(type: string, listener: (event: IEvent) => void): this;
  removeEventListener(type: string, listener: (event: IEvent) => void): this;
  removeAllListeners(type?: string): this;
  emitEvent(event: IEvent): boolean;
  on(type: string, listener: (event: object) => void): this;
  off(type: string, listener: (event: object) => void): this;
  emit(event: string | object, ...args: any[]): boolean;
}