import type { PersistedPlayerState } from './types';
/**
 * Disk-based player state persistence.
 *
 * Writes a JSON file every time state changes and reads it back on startup.
 * This means player queues, volume, loop mode, filters, and approximate
 * playback position are recovered even after a full system reboot.
 *
 * `LavalinkManager` uses one `PlayerPersistence` instance internally;
 * you normally never need to touch this class directly.
 */
export declare class PlayerPersistence {
    private readonly _path;
    private _data;
    constructor(filePath: string);
    /** Save or overwrite the state for a single guild */
    save(guildId: string, state: PersistedPlayerState): void;
    /** Get all saved states */
    getAll(): Record<string, PersistedPlayerState>;
    /** Get the saved state for a single guild */
    get(guildId: string): PersistedPlayerState | undefined;
    /** Remove the state for a guild (called when a player is destroyed) */
    delete(guildId: string): void;
    /** Wipe all saved states */
    clear(): void;
    private _write;
    private _read;
}
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