/** * @typedef {import('../types.js').Options} Options * @typedef {import('../types.js').State} State */ /** * @param {State} state * @returns {Exclude} */ export function checkStrong(state) { const marker = state.options.strong || '*' if (marker !== '*' && marker !== '_') { throw new Error( 'Cannot serialize strong with `' + marker + '` for `options.strong`, expected `*`, or `_`' ) } return marker }