type Listener<T extends unknown[]> = (...args: T) => void;
export declare class Signal<T extends unknown[]> {
    private _id;
    private _listeners;
    dispatch(...args: T): void;
    attach(listener: Listener<T>): () => boolean;
}
export declare class MemoizedSignal<T extends unknown[]> extends Signal<T> {
    private _memoizedArgs;
    constructor(...memoizedArgs: T);
    dispatch(...args: T): void;
    attach(listener: Listener<T>): () => boolean;
    getMemoizedArgs(): T;
}
export {};