type Handler<T> = (value: T) => void;
export declare class State<T> {
    init: T;
    value: T;
    handler: Set<Handler<T>>;
    constructor(init: T);
    get(): T;
    set(value: T): void;
    off(handler: Handler<T>): void;
    on(handler: Handler<T>): () => void;
    clear(): void;
}
export {};