import type { Region, BoxStyle, BoxChars } from './types.js';
/** Character sets for each box style */
export declare const BOX_CHARS: Record<Exclude<BoxStyle, 'markdown'>, BoxChars>;
export declare const VERTICAL_CHARS: Set<string>;
/** Check if a line is a horizontal border (corners + horizontal fill) */
export declare function isBorderLine(line: string): boolean;
/** Check if a line is a content line with vertical delimiters on both sides */
export declare function isContentLine(line: string): boolean;
/** Find contiguous border-character segments in a line, separated by non-border chars */
export declare function findBorderSegments(line: string): {
    start: number;
    end: number;
}[];
/** Check if a line is a markdown table separator (| --- | --- |) */
export declare function isMarkdownSeparator(line: string): boolean;
/** Detect the box style from a border or content line */
export declare function detectStyle(line: string): BoxStyle;
/** Detect all ASCII box/table regions in the input text */
export declare function detectRegions(text: string): Region[];
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