import type { Rules } from './types';
export declare const PUNCTUATION_REG: RegExp;
export declare const WHITELIST_ATTRIBUTES: string[];
export declare const lowerPriority: (src: string, offset: number, rules: Rules) => boolean;
export declare const getAttributes: (html: string) => Record<string, string | null> | null;
export declare const parseSrcAndTitle: (text?: string) => {
    src: string;
    title: string;
};
export declare const validateEmphasize: (src: string, offset: number, marker: string, pending: string, rules: Rules) => boolean;
export declare const correctUrl: (token: string[] | null) => void;