Error `require('av')` using webpack

Installed module with npm but can't require it in my file. Webpack says:

./~/av/src/sources/node/file.js
Module not found: Error: Cannot resolve module 'fs' in /Users/davidnaas/Documents/idagio/idagio-web/node_modules/av/src/sources/node

The actual installation looked a bit weird too, could it be something in there?

> speaker@0.3.0 install /Users/davidnaas/Documents/idagio/idagio-web/node_modules/speaker
> node-gyp rebuild

gyp WARN download NVM_NODEJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, please use NODEJS_ORG_MIRROR
gyp WARN download NVM_NODEJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, please use NODEJS_ORG_MIRROR
gyp WARN download NVM_NODEJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, please use NODEJS_ORG_MIRROR
  CC(target) Release/obj.target/output/deps/mpg123/src/output/coreaudio.o
  LIBTOOL-STATIC Release/liboutput.a
  CXX(target) Release/obj.target/binding/src/binding.o
  SOLINK_MODULE(target) Release/binding.node
clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9
idagio-web@6.23.1 /Users/davidnaas/Documents/idagio/idagio-web
└─┬ av@0.4.9
  ├─┬ coffeeify@0.6.0
  │ ├─┬ coffee-script@1.7.1
  │ │ └── mkdirp@0.3.5
  │ └── convert-source-map@0.3.5
  └─┬ speaker@0.3.0
    └─┬ readable-stream@2.2.3
      └── isarray@1.0.0

Or am I just missing something obvious?

audiocogs / aurora.js

Error `require('av')` using webpack #183