/**
 * Registry client interface for querying package version metadata.
 *
 * Injectable for testability — real implementation calls npm/PyPI/crates.io/Go
 * registry APIs.
 *
 * Requirements: 11.1
 */
export interface PackageVersionInfo {
    name: string;
    currentVersion: string;
    /** Latest version in current minor series (e.g. 2.3.x) */
    latestPatch: string | null;
    /** Latest version in current major series (e.g. 2.x.x) */
    latestMinor: string | null;
    /** Absolute latest version */
    latestMajor: string;
    /** ISO 8601 of the latest version's publish date */
    publishedAt: string;
    /** Whether the package is deprecated */
    deprecated: boolean;
    deprecationMessage?: string;
    /** URL to changelog or releases page */
    changelog?: string;
    /** URL to source repository */
    repository?: string;
}
/**
 * Client interface for package registry queries.
 */
export interface RegistryClient {
    /**
     * Fetch version metadata for a package.
     * @param ecosystem - "npm", "PyPI", "crates.io", "Go"
     * @param packageName - Package name
     * @param currentVersion - Currently installed version
     */
    getVersionInfo(ecosystem: string, packageName: string, currentVersion: string): Promise<PackageVersionInfo>;
    /**
     * Batch version info retrieval.
     * @returns Map keyed by packageName -> PackageVersionInfo
     */
    getVersionInfoBatch(queries: Array<{
        ecosystem: string;
        packageName: string;
        currentVersion: string;
    }>): Promise<Map<string, PackageVersionInfo>>;
}
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