var fs=require('fs');
var copy=function(src,dst){
  let paths = fs.readdirSync(src); //同步读取当前目录
  paths.forEach(function(path){
    var _src=src+'/'+path;
    var _dst=dst+'/'+path;
    fs.stat(_src,function(err,stats){ //stats 该对象 包含文件属性
      if(err)throw err;
      if(stats.isFile()){ //如果是个文件则拷贝
        let readable=fs.createReadStream(_src);//创建读取流
        let writable=fs.createWriteStream(_dst);//创建写入流
        readable.pipe(writable);
      }else if(stats.isDirectory()){ //是目录则 递归
        checkDirectory(_src,_dst,copy);
      }
    });
  });
}
var checkDirectory=function(src,dst,callback){
  fs.access(dst, fs.constants.F_OK, (err) => {
    if(err){
      fs.mkdirSync(dst);
      callback(src,dst);
    }else{
      callback(src,dst);
    }
   });
};
const  SOURCES_DIRECTORY = 'd:commonPrefab'; //源目录
checkDirectory(SOURCES_DIRECTORY,__dirname,copy);

var fs = require('fs');
var path = require('path');
var exec = require('child_process').exec;
function readFileList(dir, filesList = []) {
  const files = fs.readdirSync(dir);
  console.log(files);
  files.forEach((item, index) => {
    var fullPath = path.join(dir, item);
    const stat = fs.statSync(fullPath);
    if (stat.isDirectory()) {   
      readFileList(path.join(dir, item), filesList); //递归读取文件
    } else {        
      filesList.push(fullPath);           
    }    
  });
  return filesList;
}
var filesList = [];
readFileList(__dirname,filesList);
console.log(filesList);