import type { DiffPayload } from '../../../utils/diff.js';
export declare const MAX_OVERLAY_DIFF_LINES = 8;
export declare const FLUSH_DIFF_LINES_DEFAULT = 30;
export declare function diffsDisabled(): boolean;
export declare function formatDiffBlock(diff: DiffPayload, mode: 'overlay' | 'flush', indent: string): string[];
export declare function formatPreviewDiffBlock(diff: DiffPayload, indent: string): string[];