/**
 * BlockNote Service
 *
 * Converts between BlockNote/ProseMirror data structures and Markdown
 *
 * Features:
 * - Convert BlockNote JSON to Markdown
 * - Convert Markdown to BlockNote JSON
 * - Support for headings, paragraphs, lists, code blocks
 * - Support for text styling (bold, italic, strikethrough, code)
 * - Support for checklist items
 *
 * @example
 * ```typescript
 * const markdown = blocknoteService.convertToMarkdown({ nodes: blockNoteData });
 * const blockNote = blocknoteService.createFromMarkdown('# Hello World');
 * ```
 */
export declare class BlockNoteService {
    /**
     * Converts a BlockNoteJS/Prosemirror data structure into markdown.
     *
     * `preserveMentions` keeps mention inline nodes addressable in the markdown
     * (see `processMention`). It is opt-in because every existing caller wants
     * the plain alias.
     */
    convertToMarkdown(params: {
        nodes: any[];
        preserveMentions?: boolean;
    }): string;
    /**
     * Converts markdown text into a BlockNoteJS/Prosemirror data structure.
     */
    createFromMarkdown(markdown: string): Promise<any[]>;
    /**
     * Recursively convert marked tokens into nodes.
     */
    protected tokensToNodes(tokens: any[]): any[];
    /**
     * Convert inline tokens to content array.
     */
    protected inlineTokensToContent(tokens: any[]): any[];
    /**
     * Process a single node to markdown.
     */
    protected processNode(node: any, indentLevel?: number, preserveMentions?: boolean): string;
    protected processParagraph(node: any, preserveMentions?: boolean): string;
    protected processHeading(node: any, preserveMentions?: boolean): string;
    protected processBulletListItem(node: any, indentLevel: number, preserveMentions?: boolean): string;
    protected processNumberedListItem(node: any, indentLevel: number, preserveMentions?: boolean): string;
    protected processCheckListItem(node: any, indentLevel: number, preserveMentions?: boolean): string;
    protected processCodeBlock(node: any, preserveMentions?: boolean): string;
    protected processContent(contentArray: any[], preserveMentions?: boolean): string;
    /**
     * Render a BlockNote mention inline node.
     *
     * Default: the human-readable alias, so LLM prompts and search indexes see a
     * name rather than a hole in the text.
     *
     * preserveMentions: a markdown link the mention parser can read back, so a
     * stored message keeps its entity pointers and can be re-rendered with
     * hovercards. Kept opt-in because the alias form is what the summariser,
     * chunker and prompt paths want.
     */
    protected processMention(node: any, preserveMentions?: boolean): string;
    protected applyTextStyles(text: string, styles: any): string;
    protected processRelationship(node: any): string;
    protected processContentNodes(nodes: any[]): string;
    /**
     * Converts a BlockNoteJS/Prosemirror data structure into plain text (no markdown formatting).
     */
    convertToPlainText(params: {
        nodes: any[];
    }): string;
    protected processNodeAsPlainText(node: any, indentLevel?: number): string;
    protected processParagraphAsPlainText(node: any): string;
    protected processHeadingAsPlainText(node: any): string;
    protected processBulletListItemAsPlainText(node: any, indentLevel: number): string;
    protected processNumberedListItemAsPlainText(node: any, indentLevel: number): string;
    protected processCheckListItemAsPlainText(node: any, indentLevel: number): string;
    protected processCodeBlockAsPlainText(node: any): string;
    protected processContentAsPlainText(contentArray: any[]): string;
}
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