ReferenceError when fast-form-generator-react is uglified through create-react-app

[brandonthomas]

Describe the bug
When fast-form-generator-react is put through a production build using the default setup of create-react-app there appears to be an error when uglification scopes functions. This results in a ref error due to a value being undefined (or so it thinks). Below is the error although it's pretty useless.

ReferenceError: s is not defined
at t.t (form-section.utilities.js:226)
at new (form-section.js:62)
at Ni (react-dom.production.min.js:174)
at ha (react-dom.production.min.js:202)
at ma (react-dom.production.min.js:203)
at $a (react-dom.production.min.js:212)
at qa (react-dom.production.min.js:211)
at Ga (react-dom.production.min.js:211)
at rs (react-dom.production.min.js:223)
at Nn (react-dom.production.min.js:89)
zi @ react-dom.production.min.js:188
n.callback @ react-dom.production.min.js:195
Ko @ react-dom.production.min.js:144
Go @ react-dom.production.min.js:145
Xa @ react-dom.production.min.js:220
$a @ react-dom.production.min.js:212
qa @ react-dom.production.min.js:211
Ga @ react-dom.production.min.js:211
rs @ react-dom.production.min.js:223
Nn @ react-dom.production.min.js:89
form-section.utilities.js:226 Uncaught ReferenceError: s is not defined
at t.t (form-section.utilities.js:226)
at new (form-section.js:62)
at Ni (react-dom.production.min.js:174)
at ha (react-dom.production.min.js:202)
at ma (react-dom.production.min.js:203)
at $a (react-dom.production.min.js:212)
at qa (react-dom.production.min.js:211)
at Ga (react-dom.production.min.js:211)
at rs (react-dom.production.min.js:223)
at Nn (react-dom.production.min.js:89)

To Reproduce
Steps to reproduce the behavior:

1. Create an app using create-react-app (i used the typescript version)
2. Include a Form in your app
3. Ensure that your schema has oneOf or anyOf defined
4. Run a production build
5. Run your app and you should see it puke

Expected behavior
Prod build works with create-react-app

Additional context
Here are some threads around a similar issue that another package ran into
mapbox/mapbox-gl-js#4359 (comment)
mapbox/mapbox-gl-js#6956

[brandonthomas]

I could fix this by ejecting create-react-app and making changes to my webpack.config.js (namely ensuring that sourceMap: true instead of shouldUseSourceMap) but I think create-react-app is common enough that this package should support it out of the box. Not to mention this is a tricky issue to debug.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[brandonthomas]

@nicholasrice, did you guys solve this one?