type UpdateFileChunk = {
    changeContext?: string;
    oldLines: string[];
    newLines: string[];
    isEndOfFile: boolean;
};
export declare function applyUpdateHunk(filePath: string, chunks: UpdateFileChunk[]): Promise<string>;
/**
 * Pure variant of {@link applyUpdateHunk} that works on already-read contents,
 * so callers can validate/compute a patch against an in-memory view (e.g. a
 * two-phase atomic apply) without reading from disk.
 */
export declare function applyUpdateHunkToContents(originalContents: string, filePath: string, chunks: UpdateFileChunk[]): string;
export {};