C:\Users\Administrator\Desktop\imooc\react-webpack-teach>npm run dev:client

> react-webpack-teach@1.0.0 dev:client C:\Users\Administrator\Desktop\imooc\react-webpack-teach

> cross-env NODE_ENV=development webpack-dev-server --config build/webpack.config.client.js

i ｢wds｣: Project is running at http://0.0.0.0:8888/

i ｢wds｣: webpack output is served from /public/

i ｢wds｣: 404s will fallback to /public/index.html

‼ ｢wdm｣: Hash: e9078d726db8d257ca60

Version: webpack 4.12.1

Time: 5918ms

Built at: 2018-06-26 16:56:27

                      Asset       Size  Chunks                    Chunk Names

app.e9078d726db8d257ca60.js    250 KiB       0  [emitted]  [big]  app

                 index.html  411 bytes          [emitted]

Entrypoint app [big] = app.e9078d726db8d257ca60.js

 [0] ./node_modules/react-hot-loader/index.js 228 bytes {0} [built]

 [2] ./node_modules/react/index.js 190 bytes {0} [built]

 [3] (webpack)/hot/log.js 1010 bytes {0} [built]

 [9] ./node_modules/react-hot-loader/dist/react-hot-loader.production.min.js 1.28 KiB {0} [built]

[10] (webpack)/hot/emitter.js 77 bytes {0} [built]

[21] ./client/app.js 1.37 KiB {0} [built]

[23] ./node_modules/react-hot-loader/patch.js 213 bytes {0} [built]

[25] (webpack)/hot/dev-server.js 1.6 KiB {0} [built]

[32] (webpack)-dev-server/client/overlay.js 3.58 KiB {0} [built]

[34] (webpack)-dev-server/client/socket.js 1.05 KiB {0} [built]

[35] ./node_modules/loglevel/lib/loglevel.js 7.68 KiB {0} [built]

[37] ./node_modules/strip-ansi/index.js 161 bytes {0} [built]

[43] ./node_modules/url/url.js 22.8 KiB {0} [built]

[44] (webpack)-dev-server/client?http://0.0.0.0:8888 7.75 KiB {0} [built]

[45] multi (webpack)-dev-server/client?http://0.0.0.0:8888 webpack/hot/dev-server react-hot-loader/patch ./client/app.js 64 bytes {0} [built]

    + 31 hidden modules

WARNING in configuration

The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment.

You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/concepts/mode/

WARNING in asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).

This can impact web performance.

Assets:

  app.e9078d726db8d257ca60.js (250 KiB)

WARNING in entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (244 KiB). This can impact web performance.

Entrypoints:

  app (250 KiB)

      app.e9078d726db8d257ca60.js

WARNING in webpack performance recommendations:

You can limit the size of your bundles by using import() or require.ensure to lazy load some parts of your application.

For more info visit https://webpack.js.org/guides/code-splitting/

Child html-webpack-plugin for "index.html":

     1 asset

    Entrypoint undefined = index.html

    [0] (webpack)/buildin/module.js 497 bytes {0} [built]

    [1] (webpack)/buildin/global.js 489 bytes {0} [built]

    [2] ./node_modules/lodash/lodash.js 527 KiB {0} [built]

    [3] ./node_modules/html-webpack-plugin/lib/loader.js!./client/template.html 555 bytes {0} [built]

i ｢wdm｣: Compiled with warnings.

有这4个报错，服务正常启动，但是页面是空白的 没有显示内容！