declare type IState = {
    status: string;
};
export declare type PickState<S extends IState, T extends S["status"] = never> = [
    T
] extends [never] ? S : S extends {
    state: T;
} ? S : never;
export declare class States<S extends IState, U extends IState> {
    private _state;
    private _listeners;
    private _isDisposed;
    private _transition?;
    constructor(initialState: S);
    get isDisposed(): boolean;
    resolve(): Promise<S>;
    get(): S | U;
    set<T extends S | U>(state: T): T;
    transition<T extends U, P extends () => Promise<S>>(state: T, transition: P): Promise<ReturnType<P>>;
    onTransition(listener: (state: S | U, prevState: S | U) => void): () => void;
    dispose(): void;
}
export {};