/**
 * External package extractor.
 *
 * Parses package manifests (npm, pip, cargo, go) to build a flat list
 * of direct dependencies. No LLM required — pure filesystem reads.
 */
export type PackageEcosystem = 'npm' | 'pypi' | 'cargo' | 'go';
export interface ExternalPackage {
    name: string;
    version: string;
    ecosystem: PackageEcosystem;
    isDev: boolean;
}
export interface ExternalPackageSummary {
    total: number;
    byEcosystem: Partial<Record<PackageEcosystem, number>>;
    packages: ExternalPackage[];
}
export declare function extractExternalPackages(rootDir: string): Promise<ExternalPackageSummary>;
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