How to set multiple file entry and output in project with webpack?

Question

How to set multiple file entry/output in project with webpack?

I follow http://webpack.github.io/docs/tutorials/getting-started/ success compile if only one file in

Answer 1

What if you want to get output files as foo.css and bar.js at the same time? the answers above seem incapable to handle this.

The sane way is to use multi-compiler. One input file one config object one output file. From this answer.