function cloneFunction(func) {
const bodyReg = /(?<={)(.|\n)+(?=})/m;
const paramReg = /(?<=\().+(?=\)\s+{)/;
const funcString = func.toString();
const param = paramReg.exec(funcString);
const body = bodyReg.exec(funcString);
console.log('匹配到函数体:', body[0]);
const paramArr = param[0].split(',');
console.log('匹配到参数:', paramArr);
return new Function(...paramArr, body[0]);
return new Function(body[0]);