/** * @import {Options, State} from 'mdast-util-to-markdown' */ /** * @param {State} state * @returns {Exclude} */ export function checkQuote(state) { const marker = state.options.quote || '"' if (marker !== '"' && marker !== "'") { throw new Error( 'Cannot serialize title with `' + marker + '` for `options.quote`, expected `"`, or `\'`' ) } return marker }