at present, I intend to make my own VUE component library, so I use webpack4.8.3 as a build tool from scratch, but the built component library files can be used normally in projects built by webpack4.8.3, but they cannot be used in projects built by webpack3.6.0. I compared the files I built with those built by wenpack3.6.0. I want to make sure that the components built by webpack4.8.3 can be used in projects built by wenpack3.6.0.

for specific code, please refer to this project https://github.com/jingchenxu. this project, which is a project built by webpack4.8.3, and you can use the components built by webpack4.8.3 normally.