import { IMarkmapOptions } from 'markmap-common';
import { IMarkmapJSONOptions } from './types';
export declare function deriveOptions(jsonOptions?: IMarkmapJSONOptions): Partial<IMarkmapOptions>;
/**
 * Credit: https://gist.github.com/jlevy/c246006675becc446360a798e2b2d781?permalink_comment_id=4738050#gistcomment-4738050
 */
export declare function simpleHash(str: string): string;