nodejs修改文件名

const fs = require("fs");
let path = '路径'
fs.readdir(path, function (err, files) {
    files.forEach(function (filename, index) {
        let oldPath = path + '/' + filename;
        let newPath = oldPath.replace(/\Y[0-9]*\_/g, 'Y1_')
        console.log(oldPath, '----------', newPath);
        fs.rename(oldPath, newPath, function (err) {
            if (!err) {
                console.log(filename + '修改完成!')
            }
        })
    })
})