视频中并没有安装webpack-cli，老师也说不要自己配么？为什么我还报错，一定要让我装webpack-cli呢
One CLI for webpack must be installed. These are recommended choices, delivered as separate packages:
- webpack-cli (https://github.com/webpack/webpack-cli)
The original webpack full-featured CLI.
- webpack-command (https://github.com/webpack-contrib/webpack-command)
A lightweight, opinionated webpack CLI.
We will use "npm" to install the CLI via "npm install -D".
Which one do you like to install (webpack-cli/webpack-command):
webpack 4 需要安装webpack-cli
安装后还报错。
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/
ERROR in ./src/app.vue 1:0
Module parse failed: Unexpected token (1:0)
You may need an appropriate loader to handle this file type.
> <template>
| <div id="text">{{text}}</div>
| </template>
@ ./src/index.js 2:0-27 8:19-22