import React from 'react';
import type { ReferenceCodeBlockProps, GitHubReference, DispatchMessage, CustomizedLinkOptions } from '../types';
/**
 * parses GitHub reference
 * @param {string} ref url to github file
 */
export declare function parseReference(ref: string): GitHubReference;
export declare function parseCustomization(metastring: string | undefined): CustomizedLinkOptions;
export declare function codeReducer(prevState: any, { type, value }: DispatchMessage): any;
declare function ReferenceCode(props: ReferenceCodeBlockProps): React.JSX.Element;
export default ReferenceCode;
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