import { type GitObject, type ObjectStore } from '../git/index.ts';
import type { Memory } from '../contract/index.ts';
import type { Package } from './package.ts';
export declare class Dna implements ObjectStore {
    #private;
    static readonly prefix: string;
    constructor(memory: Memory, pack: Package);
    static occupies(place: string): boolean;
    get(id: string): Promise<GitObject | null>;
    put(objects: readonly GitObject[]): Promise<string[]>;
    count(): Promise<number>;
    collect(keep: Iterable<string>): Promise<number>;
}