event-handler-manager/dist/lib/IEventHandler.d.ts

A typescript (also javascript) simple Event Handler Manager

export interface IEventHandler {
    attach(events: Array<string>): any;
    attach(event: string): any;
    on(event: string, callback: Function): number;
    on(events: string, callback: Function): Array<number>;
    off(event: string, eventRef: number, callback?: Function): void;
    off(event: string, callback?: Function): void;
    off(callback?: Function): void;
    trigger(event: string): Promise<any>;
    trigger(events: Array<string>): Promise<any>;
}