我这个问题前面跟你的错误一样，后面就不一样了。不知道怎么改。

Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.

 - configuration.module.rules[3].use should be one of these:

   non-empty string | function | object { ident?, loader?, options?, query? } | function | [non-empty string | function | object { ident?, loader?, options?, query? }]

   -> Modifiers applied to the module when rule is matched

   Details:

    * configuration.module.rules[3].use should be a string.

    * configuration.module.rules[3].use should be an instance of function

    * configuration.module.rules[3].use should be an object.

    * configuration.module.rules[3].use should be an instance of function

    * configuration.module.rules[3].use[0] should be a string.

    * configuration.module.rules[3].use[0] should be an instance of function

    * configuration.module.rules[3].use[0] has an unknown property 'option'. These properties are valid:

      object { ident?, loader?, options?, query? }

path: "./dist/js"
改为：
path: __dirname +"/dist/js"

webpack版本的问题，可以改成path: __dirname + '/dist/js',

直接

path: path.resolve(__dirname, 'dist'),

不要./dist

少了个  var path = require('path') 的引入

./dist/js 把前面一点去了也可以 /dist/js 

也可能你没有建dist这个文件夹

output:{

    path:路径错误

}

不知道是不是，把代码复制出来看看，比较容易看那里错了