/** IFrame API create an api and wait the target ready
 * @constructor
 */
export default class IFrameAPI {
  /**
   * @param {string} targetOrigin, default '*'
   */
  constructor(targetOrigin?: string);

  /** Add properties
   * @param {string} key
   * @param {*} value
   */
  set(key: string, value: any): void;

  /** Get properties
   * @param {string} key
   * @return {*}
   */
  get(key: string): any;

  /**
   * @typedef {Object} TemplateAPI
   * @property {string} name api name
   * @property {function} function if return a Transferable it will be send to the iFrame
   */

  /**
   * @typedef {Object} TemplateAPI
   * @property {string} name api name
   * @property {function} function if return a Transferable it will be send to the iFrame
   */
  /** Add functions to the API
   * @param {Array<TemplateAPI>} list of functions to add to the api
   *
   */
  setAPI(api: any[]): void;

  /** Post a message to the iframe
   * @param {string} name api name
   * @param {Transferable } data object to transfer to the iframe
   */
  postMessage(name: string, data: Transferable): void;

  addListener(name: string, listener: any): void;
}