import { Plugin, Transformer } from 'unified';
/**
 * Modified from: https://github.com/remcohaszing/remark-mdx-code-meta
 *
 * Custom meta parser for codefences that have extra params. e.g.
 * ```jsx filename="hello.jsx"
 * <div>Test!</div>
 * ```
 *
 * Custom meta parser for codefences that have eval or eval="true".
 * This allows vars to be resolved and their values used as the code block body.
 * ```jsx eval
 * meta.data.someStringOnlyAvailableAtRuntime
 * ```
 */
export declare const transformer: Transformer;
/**
 * A markdown plugin for transforming code metadata.
 *
 * @returns A unified transformer.
 */
export declare const codeBlocks: Plugin<[]>;