What does “The code generator has deoptimised the styling of [some file] as it exceeds the max of ”100KB“” mean?

Question

I added a new npm package to my project and require it in one of my modules.

Now I get this message from webpack,

build modulesNote: The code generator

Answer 1

This seems to be a Babel error. I'm guessing you use babel-loader, and are not excluding external libraries from your loader test. As far as I can tell, the message is not harmful, but you should still do something like this:

loaders: [
    { test: /\.js$/, exclude: /node_modules/, loader: 'babel' }
]

Have a look. Was that it?