npm之网络包 4 : ERROR in Entry module not found: Error: Can't resolve './src'

我试图运行 webpack-4 第一次

webpack ./src/js/app.js ./dist/app.bundle.js 

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 multi ./src/js/app.js ./dist/app.bundle.js 
Module not found: Error: Can't resolve './dist/app.bundle.js' in 'D:\wamp64\www\webpack-4' 
 @ multi ./src/js/app.js ./dist/app.bundle.js 

webpack --mode development 

ERROR in Entry module not found: Error: Can't resolve './src' 

请您参考如下方法:

已解决

花了很多时间才找到解决办法。

解决方法:添加index.js文件到 src文件夹。

就是这样!...解决了:)

在研究期间，我发现了一些关于 的事实。 webpack 4 :

webpack 4 默认不需要配置文件!

webpack 4 有无需定义入口点 : 需要 ./src/index.js作为默认值!