Hi
An sorry, but I will be really synthetic this time.
$webpack-dev-server --open --output dist --config webpack.config.js + clean-webpack-plugin = Evanesco

The webpack config worked perfectly before, for a while, except webpack-dev-server complaining about missing js file while accessing in browser.
I haven't any more information now since I run testdisk before getting older backups.
So I can't be even sure that this issue is related to clean-webpack-plugin or webpack-dev-server

But I think that in both case it should be any security stopping all if the config file is under the directory that is asked to be delete.

Edit: Just seeing #155
Edit: Unable to restore with testdisk, only able to list all root file, but their size are 0.

Additional information:
"clean-webpack-plugin": "^3.0.0", (according to atom)

devServer: {
      contentBase: './dist',
      historyApiFallback: true,
      hot: true,
      overlay: true
    },