Error: Couldn't find preset "@babel/env" relative to directory

[Pasoul]

如果遇到此问题，应该在babel-loader配置中移除对node_modules校验

module: {
    rules: [
      {
        test: /\.js$/,
        loader: "babel-loader",
        exclude: /node_modules/
      }
    ]
  }

babel6只会对.babelrc进行处理，为了避免此问题，jlb-tools 将 .babelrc 替换成 .babelrc.js