electron.conf.js

var fs = require('fs'),
stat = fs.stat;

// 复制目录
exists('./app', './buildsoure', copy);
deleteall('./build/package');

// 在复制目录前需要判断该目录是否存在，不存在需要先创建目录
function exists(src, dst, callback) {
fs.exists(dst, function (exists) {
  // 已存在
  if (exists) {
    callback(src, dst);
  }
  // 不存在
  else {
    fs.mkdir(dst, function () {
      callback(src, dst);
    });
  }
});
}

function copy(src, dst) {
// 读取目录中的所有文件/目录
fs.readdir(src, function (err, paths) {
  if (err) {
    throw err;
  }
  var exacLoop = function (index) {
    if (index === paths.length - 1) console.log('\n\ncp electron files to buildsoure finished!!!\n\n');
  };
  paths.forEach(function (path, i) {
    var _src = src + '/' + path,
      _dst = dst + '/' + path,
      readable, writable;
    stat(_src, function (err, st) {
      if (err) {
        throw err;
      }
      // 判断是否为文件
      if (st.isFile()) {
        // 创建读取流
        readable = fs.createReadStream(_src);
        // 创建写入流
        writable = fs.createWriteStream(_dst);
        // 通过管道来传输流
        readable.pipe(writable);
        exacLoop(i);
      }
      // 如果是目录则递归调用自身
      else if (st.isDirectory()) {
        exists(_src, _dst, copy);
        exacLoop(i);
      } else {
        exacLoop(i);
      }
    });
  });
});
}

function deleteall(path) {
var files = [];
if (fs.existsSync(path)) {
  files = fs.readdirSync(path);
  files.forEach(function (file, index) {
    var curPath = path + "/" + file;
    if (fs.statSync(curPath).isDirectory()) { // recurse
      deleteall(curPath);
    } else { // delete file
      fs.unlinkSync(curPath);
    }
  });
  fs.rmdirSync(path);
}
};