External packages not working

[weyert]

• kcd-scripts version: 0.48.0
• node version: v11.3.0
• npm (or yarn) version:

import DatePicker from 'react-datepicker'

(see index.js)

What you did:
I am trying to make my own component library for frequently used components, and reducers etc. As long I am doing npm run build it's all working fine but when I am trying to run npm run build --bundle it's failing for theumd-build with the following error:

[umd] [!] (babel plugin) TypeError: @babel/template placeholder "NODE": Property expression of ExpressionStatement expected node to be of a type ["Expression"] but instead got "VariableDeclarator"
[umd] node_modules/react-datepicker/es/index.js
[umd] TypeError: @babel/template placeholder "NODE": Property expression of ExpressionStatement expected node to be of a type ["Expression"] but instead got "VariableDeclarator"

What happened:

After executing the command ./node_modules/.bin/kcd-scripts build --bundle --no-clean --size-snapshot as found in the paypal/downshift-repo. I am getting the above mentioned error. I am not sure how I could resolve this.

Reproduction repository:
I have made a small reproducible case of my issue:
https://github.com/weyert/kcd-scripts-issue

Problem description:
I am doing something wrong when using third-party packages but not sure what. I think the problem that this package react-datepicker is already precompiled.

Suggested solution:

[kentcdodds]

You need to override the commonjs rollup plugin I'm guessing.

As a reminder, I'm not supporting this package. I use it myself and I fix my own issues, but I don't help support other people's use cases. I don't have time. Feel free to fork it.

Good luck!