/**
 * Default citation identifier used for simplified citation markers without an explicit position.
 *
 * @private utility of `<Chat/>`
 */
export declare const DEFAULT_SIMPLIFIED_CITATION_ID = "0:0";
/**
 * Parsed citation marker normalized to the full OpenAI-style notation.
 *
 * @private utility of `<Chat/>`
 */
export type CitationMarker = {
    /**
     * Citation identifier (for example `7:15`).
     */
    id: string;
    /**
     * Citation source filename or label.
     */
    source: string;
    /**
     * Original marker exactly as found in the content.
     */
    raw: string;
    /**
     * Full normalized marker (`【id†source】`).
     */
    normalized: string;
};
/**
 * Creates a global regular expression that matches citation markers wrapped in `【...】`.
 *
 * @private utility of `<Chat/>`
 */
export declare function createCitationMarkerRegex(): RegExp;
/**
 * Parses one citation marker and normalizes it to full notation.
 *
 * @param rawMarker - Marker including outer brackets.
 * @returns Parsed marker or `null` when the marker is invalid.
 *
 * @private utility of `<Chat/>`
 */
export declare function parseCitationMarker(rawMarker: string): CitationMarker | null;
/**
 * Parses all citation markers from content and normalizes each to full notation.
 *
 * @param content - Content that may contain citation markers.
 * @returns Parsed citation markers in their original order.
 *
 * @private utility of `<Chat/>`
 */
export declare function parseCitationMarkersFromContent(content: string): CitationMarker[];
/**
 * Replaces all citation markers in content using normalized marker metadata.
 *
 * @param content - Content that may contain citation markers.
 * @param replacer - Replacement callback for each valid marker.
 * @returns Content with citation markers replaced.
 *
 * @private utility of `<Chat/>`
 */
export declare function replaceCitationMarkers(content: string, replacer: (marker: CitationMarker) => string): string;
/**
 * Normalizes simplified citation markers to full notation.
 *
 * Example:
 * - `【document.pdf】` -> `【0:0†document.pdf】`
 *
 * @param content - Content that may contain simplified markers.
 * @returns Content where every citation marker is in full notation.
 *
 * @private utility of `<Chat/>`
 */
export declare function normalizeCitationMarkersToFullNotation(content: string): string;