This is a barebones project that reproduces an issue seen when using the vue-select component from its NPM repository, along with browserify + vueify.

The issue that appears looks like the following:

Error: Cannot find module 'babelify'

To reproduce, clone this project and run

npm install
npm run build

Furthermore you will find that if you comment out the two lines in src/main.js that require and register the VueSelect component, the build command will run successfully.