/**
 * Markdown preprocess — deterministic transforms for Feishu doc creation.
 *
 * Handles:
 * - Blue numbering prefix on numbered headings
 * - Heading background color via block-level PATCH (not in this module)
 * - Rainbow color mapping per heading level
 * - Inline text color/bg via Lark-flavored markdown
 */
export interface RainbowConfig {
    /** Number prefix color */
    numberColor: string;
    /** Background color name for <text bgcolor="..."> */
    bgColor: string;
}
export interface PreprocessOptions {
    /** Rainbow color map per heading level (2=##, 3=###, etc.) */
    rainbowMap?: Record<number, RainbowConfig>;
    /** Strip first H1 if it duplicates the document title */
    stripTitle?: boolean;
    /** Number prefix color (used when no rainbow map) */
    numberColor?: string;
}
/**
 * Transform a single heading line.
 * - Plain numbered heading → blue prefix + optional rainbow bg
 * - Already decorated → pass through
 * - No number → bg only
 */
export declare function transformHeading(line: string, rainbowMap?: Record<number, RainbowConfig>): string;
/**
 * Preprocess full markdown text.
 */
export declare function preprocessMarkdown(text: string, opts?: PreprocessOptions): string;
//# sourceMappingURL=preprocess.d.ts.map