/**
 * Unified Diff Generator
 *
 * Simple utility for generating unified diff format without external dependencies.
 * Used by dry-run mode to preview file changes.
 */
export interface DiffResult {
    /** Lines added */
    additions: number;
    /** Unified diff text */
    diffText: string;
    /** Lines deleted */
    deletions: number;
    /** Whether there are any changes */
    hasChanges: boolean;
}
/**
 * Generate a unified diff between old and new content
 *
 * @param oldContent - Original file content
 * @param newContent - New file content
 * @param filePath - Path to the file (for header)
 * @returns DiffResult with unified diff format
 */
export declare function generateUnifiedDiff(oldContent: string, newContent: string, filePath: string): DiffResult;
/**
 * Format a diff result for console display
 *
 * @param diff - The diff result to format
 * @param filePath - Path to the file
 * @returns Formatted string with ANSI colour codes
 */
export declare function formatDiffForDisplay(diff: DiffResult, filePath: string): string;
/**
 * Create a diff result for a new file
 */
export declare function createNewFileDiff(content: string, filePath: string): DiffResult;
/**
 * Create a diff result for a deleted file
 */
export declare function createDeletedFileDiff(content: string, filePath: string): DiffResult;
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