import { Custody, Memory, type Entropy } from '../contract/index.ts';
export type Keep = Record<string, string | null>;
export declare class FolderMemory extends Memory {
    #private;
    readonly root: string;
    constructor(root: string);
    read(place: string): Promise<Map<string, Uint8Array>>;
    write(place: string, entries: ReadonlyMap<string, Uint8Array | null>): Promise<void>;
    places(): Promise<string[]>;
    forget(place: string): Promise<void>;
    protected apply(dir: string, keep?: Keep): Promise<void>;
}
export declare class FolderCustody extends Custody {
    #private;
    readonly root: string;
    constructor(root: string, entropy: Entropy);
    seed(): Promise<Uint8Array>;
}