How to make webpack and default modules in the node?

Under default nodoame mean those that are provided to us immediately after you install nodejs, for example fs, http, net well, etc.
There are files which will be concatenated into one using webpack and if these files I want to do something
let net = require('net');
then I get here is

ERROR in *any file* Module not found: Error: Can't resolve 'net' in '*any way*' @ *a file* 27:10-24