declare module '@ember/debug/lib/handlers' {
    export type Options = object;
    export type Handler<O extends Options> = (message: string, options?: O) => void;
    export type HandlerCallback<O extends Options> = (message: string, options: O | undefined, nextHandler: Handler<O>) => void;
    export interface Handlers {
        [key: string]: Handler<Options>;
    }
    export let HANDLERS: Handlers;
    export type RegisterHandlerFunc<O extends Options> = (type: string, callback: HandlerCallback<O>) => void;
    export type InvokeFunc = (type: string, message: string, test?: boolean, options?: Options) => void;
    let registerHandler: <O extends Options>(_type: string, _callback: HandlerCallback<O>) => void;
    let invoke: InvokeFunc;
    export { registerHandler, invoke };
}