export interface GraphBuildGitFreshnessMetadata {
    head_sha: string;
    dirty_files: string[];
    dirty_file_fingerprints: Record<string, string>;
}
export interface GraphBuildFilesystemFreshnessMetadata {
    file_fingerprints: Record<string, string>;
}
export interface GraphBuildFreshnessMetadata {
    strategy: 'git' | 'filesystem';
    generated_at: string;
    generated_ms: number;
    git?: GraphBuildGitFreshnessMetadata;
    filesystem?: GraphBuildFilesystemFreshnessMetadata;
}
export declare function normalizeFreshnessSourceFile(rootPath: string, sourceFile: string): string;
export declare function fileContentFingerprint(filePath: string): string;
export declare function buildGraphBuildFreshnessMetadata(rootPath: string, sourceFiles: readonly string[]): GraphBuildFreshnessMetadata;
export declare function isGraphBuildFreshnessMetadata(value: unknown): value is GraphBuildFreshnessMetadata;