/**
 * Pattern to match component tags (PascalCase or snake_case)
 */
export declare const componentTagPattern: RegExp;
/**
 * MDAST flow (block-level) content types that cannot be represented
 * inside GFM table cells. Used to decide whether a table should be
 * serialized as GFM or as JSX `<Table>` syntax.
 *
 * @see https://github.com/syntax-tree/mdast#flowcontent
 */
export declare const FLOW_TYPES: Set<string>;