static isValidNameHint(nameHint, userName) { const pinyinRaw = pinyin(userName, { style: pinyin.STYLE_FIRST_LETTER, }); let pinyinName = ''; for (const py of pinyinRaw) { if (py[0] && py[0] !== ' ') { pinyinName += py[0]; } } const nameRe = new RegExp(nameHint[1], 'ig'); return nameRe.test(userName) || nameRe.test(pinyinName); }