export interface PatchHunk {
    type: 'add' | 'update' | 'delete';
    path: string;
    lines: PatchLine[];
}
export interface PatchLine {
    op: '+' | '-' | ' ' | 'context_marker';
    text: string;
}
export interface ParsedPatch {
    hunks: PatchHunk[];
    errors: string[];
}
export declare function parsePatch(raw: string): ParsedPatch;
export declare function applyUpdateHunk(original: string, hunk: PatchHunk): {
    result: string;
    error?: string;
};
export declare function extractAddContent(hunk: PatchHunk): string;
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