import { z } from "zod";
export interface ConfigOptions {
    schema?: z.ZodSchema;
    defaultValues?: Record<string, any>;
    onUpdate?: (config: Record<string, any>) => void;
    persist?: boolean;
    storage?: Storage;
}
export declare class ConfigManager {
    private config;
    private options;
    private static instance;
    constructor(options?: ConfigOptions);
    static getInstance(options?: ConfigOptions): ConfigManager;
    get<T = any>(key: string): T;
    set(key: string, value: any): void;
    update(updates: Record<string, any>): void;
    reset(): void;
    private validateUpdates;
    private handleConfigUpdate;
    private get storageKey();
    private loadConfig;
    private saveConfig;
    getSnapshot(): Record<string, any>;
    watchKey<T>(key: string, callback: (value: T) => void): () => void;
}