/**
 * Replaces style tags in the message text with custom tags with encoded content.
 * @param {string} text
 * @returns {string} Encoded message text
 * @copyright https://github.com/kwaroran/risuAI
 */
export declare function encodeStyleTags(text: string): string;
/**
 * Sanitizes custom style tags in the message text to prevent DOM pollution.
 * @param {string} text Message text
 * @param {object} options Options object
 * @param {string} options.prefix Prefix the selectors with this value
 * @returns {string} Sanitized message text
 * @copyright https://github.com/kwaroran/risuAI
 */
export declare function decodeStyleTags(text: string, { prefix }?: {
    prefix: string;
}): string;
export declare const markdownUnderscoreExt: () => {
    type: string;
    regex: RegExp;
    replace: (match: string, tagContent: string, italicContent: string) => string;
}[];
/**
 * @enum {number} Where the regex script should be applied
 */
/**
 * Formats the message text into an HTML string using Markdown and other formatting.
 * @param {string} mes Message text
 * @param {string} ch_name Character name
 * @param {boolean} isSystem If the message was sent by the system
 * @param {boolean} isUser If the message was sent by the user
 * @param {number} messageId Message index in chat array
 * @param {object} [sanitizerOverrides] DOMPurify sanitizer option overrides
 * @param {boolean} [isReasoning] If the message is reasoning output
 * @returns {string} HTML string
 */
export declare function messageFormatting(mes: any, sanitizerOverrides?: any): any;