metalsmith-filenames 
Metalsmith plugin to add filenames to entries
Installation
$ npm install metalsmith-filenames
Usage
import Metalsmith from "metalsmith"
import filenames from "metalsmith-filenames"
new Metalsmith("./")
  .use(
    filenames()
  )
  .build(err => {if (err) {throw err}})
 MoOx
MoOx