webpack中react一直配置失败?

Question

错误信息如图想问一下是不是少了什么配置?

Answer 1

还需要安装npm install --save-dev babel-preset-react,然后在webpack中配置

   { 
    test: /\.js$/,
    exclude:/node_modules/,
    loader:'babel-loader',
    query:{
      presets:['react']
   }

Answer 2

少了babel的配置

        {            
              test:/\.jsx?$/,
            loader:'babel',
            query:{
                presets:['es2015','react']
            }
        }

记得先安装babel-preset-es2015,babel-preset-react