export declare const fileChangeDiffRouter: import("express-serve-static-core").Router;

export type ChangeDiffLineType = 'hunk' | 'context' | 'add' | 'remove';

export interface ChangeDiffLine {
    type: ChangeDiffLineType;
    
    text: string;
    
    oldLine: number | null;
    
    newLine: number | null;
}

export interface ChangeDiffResponse {
    available: boolean;
    operation: string;
    filePath: string;
    lines: ChangeDiffLine[];
    
    error?: string;
}

export declare function parseDiffPatchLines(patch: string): ChangeDiffLine[];

export declare function buildChangeDiffResponse(workspacePath: string, cacheKey: string | null | undefined, operation: string, filePath: string): Promise<ChangeDiffResponse>;