import { Preference } from "narraleaf-react";
import { StringKeyof } from "../../../shared/utils/types";
import { EventToken } from "../../app/app.types";
export declare class AppState<T extends Record<string, any>> extends Preference<T> {
    constructor(settings: T);
    get<K extends StringKeyof<T>>(key: K): T[K];
    getAll(): T;
    set<K extends StringKeyof<T>>(key: K, value: T[K]): void;
    onChange<K extends StringKeyof<T>>(key: K, listener: (value: T[K]) => void): EventToken;
}