import { FindResourceInfoOptions, PackageInfo, ResourceInfo } from '../package';
import { VirtualPackage } from '../virtual';
export declare enum LoadStatus {
    LOADED = "LOADED",
    NOT_LOADED = "NOT_LOADED",
    FAILED = "FAILED"
}
export interface PackageLoader {
    loadPackage(name: string, version: string): Promise<LoadStatus>;
    loadVirtualPackage(pkg: VirtualPackage): Promise<LoadStatus>;
    getPackageLoadStatus(name: string, version: string): LoadStatus;
    findPackageInfos(name: string): PackageInfo[];
    findPackageInfo(name: string, version: string): PackageInfo | undefined;
    findPackageJSONs(name: string): any[];
    findPackageJSON(name: string, version: string): any | undefined;
    findResourceInfos(key: string, options?: FindResourceInfoOptions): ResourceInfo[];
    findResourceInfo(key: string, options?: FindResourceInfoOptions): ResourceInfo | undefined;
    findResourceJSONs(key: string, options?: FindResourceInfoOptions): any[];
    findResourceJSON(key: string, options?: FindResourceInfoOptions): any | undefined;
    optimize(): void;
    clear(): void;
}