export declare class History<T> {
    back(): void;
    forward(): void;
    go(delta?: number): void;
    length(): number;
    state(): T;
    pushState(state: T, title: string, url?: string): void;
    replaceState(state: T, title: string, url?: string): void;
    onChange(callback: (state: T) => void): this;
}