declare type IEmit<T> = T extends void ? () => void : (t: T) => void;
export declare class Hook<T = void> {
    private listeners;
    private allowEdits;
    add(cb: (t: T) => void): void;
    remove(cb: (t: T) => void): void;
    emit: IEmit<T>;
    private _emit;
    private ensureAllowEdits;
}
export {};