code: function removePackageFile(){
    const homeCwd = home.getHomePath();
    const pkgPath = path.join(homeCwd, 'package.json');
    if (!fs.existsSync(pkgPath)) return;
    fs.remove(pkgPath);
  }
docs: 切换内外网后，home目录的package.json内容可能会无法安装，比如从内网切换到外网时