/**
 * Define some regex patterns for matching boundaries.
 *
 * Ported by [xiaochao.k@gmail.com](https://github.com/nonoroazoro)
 */
export declare const NON_ALPHA_NUMERIC_REGEX: RegExp;
export declare const WHITESPACE_REGEX: RegExp;
export declare const LINEBREAK_REGEX: RegExp;
export declare const BLANKLINE_END_REGEX: RegExp;
export declare const BLANKLINE_START_REGEX: RegExp;