import { FindResourceInfoOptions, PackageInfo, PackageStats, ResourceInfo } from '../package';
export interface PackageDB {
    clear(): void;
    optimize(): void;
    savePackageInfo(info: PackageInfo): void;
    saveResourceInfo(info: ResourceInfo): void;
    findPackageInfos(name: string): PackageInfo[];
    findPackageInfo(name: string, version: string): PackageInfo | undefined;
    findResourceInfos(key: string, options?: FindResourceInfoOptions): ResourceInfo[];
    findResourceInfo(key: string, options?: FindResourceInfoOptions): ResourceInfo | undefined;
    getPackageStats(name: string, version: string): PackageStats | undefined;
    exportDB(): Promise<{
        mimeType: string;
        data: Buffer;
    }>;
}