/**
 * @typedef {import('../types.js').Context} Context
 * @typedef {import('../types.js').Options} Options
 */
/**
 * @param {Context} context
 * @returns {Exclude<Options['fence'], undefined>}
 */
export function checkFence(context: Context): Exclude<Options['fence'], undefined>;
export type Context = import('../types.js').Context;
export type Options = import('../types.js').Options;