import type { ExactPackage, LatestPackageTarget, PackageConfig } from '../install/package.js';
import type { Install } from '../generator.js';
import type { ProviderContext } from './index.js';
export declare function resolveBuiltin(specifier: string, env: string[]): string | Install | undefined;
export declare function pkgToUrl(pkg: ExactPackage): Promise<`${string}/`>;
export declare function getPackageConfig(this: ProviderContext, pkgUrl: string): Promise<PackageConfig | null | undefined>;
export declare function parseUrlPkg(url: string): {
    pkg: ExactPackage;
    subpath: `./${string}` | null;
    layer: string;
} | undefined;
export declare function resolveLatestTarget(this: ProviderContext, target: LatestPackageTarget, _layer: string, parentUrl: string): Promise<ExactPackage | null>;