タイマー開始: 選択肢数

/**
 * @param {number} limit 選択肢数の上限
 * @returns {Array} items 選択肢の値一覧
 * @returns {string} items[].id 選択肢の値
 */
const list = (limit) => {
    const def = configs.getObject("conf_idData");
    const choices = itemDao.findAll(def);
    if (choices.size() > limit) {
        throw new Error(`The number of choices ${choices.size()} exceeds the limit ${limit}.`);
    }
    const items = [];
    choices.forEach(item => {
        items.push({
            id: item.getValue()
        });
    });
    return items;
};