/**
 * Diff formatting and truncation logic
 * Provides intelligent diff rendering with context and truncation
 */
export interface DiffLine {
    type: "addition" | "deletion" | "unchanged" | "context";
    content: string;
    lineNumber?: number;
}
export interface DiffBlock {
    lines: DiffLine[];
    startLine: number;
    endLine: number;
}
export interface TruncationOptions {
    maxLines?: number;
    contextLines?: number;
    collapseThreshold?: number;
}
/**
 * Parse a unified diff string into structured diff lines
 */
export declare function parseDiff(diff: string): DiffLine[];
/**
 * Apply intelligent truncation to a diff
 * Shows changed lines + context, collapses large unchanged sections
 */
export declare function truncateDiff(lines: DiffLine[], options?: TruncationOptions): DiffLine[];
/**
 * Format diff lines back to a unified diff string
 */
export declare function formatDiff(lines: DiffLine[]): string;
/**
 * Smart diff rendering: parse, truncate, and format
 */
export declare function renderDiff(diff: string, options?: TruncationOptions): string;
/**
 * Extract diff statistics (additions, deletions, unchanged)
 */
export interface DiffStats {
    additions: number;
    deletions: number;
    unchanged: number;
    total: number;
}
export declare function getDiffStats(diff: string): DiffStats;