UglifyJS throw 'Invalid assignment' error

[jmorrice]

Hi,

Thanks for this awesome library!

I'm creating a component library using an nwb boilerplate (https://github.com/insin/nwb/blob/master/docs/guides/ReactComponents.md#developing-react-components-and-libraries-with-nwb).

Once I added react-element-to-jsx-string the build fails with the following error:

Failed to compile with 1 error.

 ERROR  in demo.1990f3e7.js from UglifyJs
Invalid assignment [./~/stringify-object/index.js:6,0][demo.1990f3e7.js:11007,34]

Is this an issue with stringify-object?

[vvo]

Is this an issue with stringify-object?

Yes this is the case, search on their repo and let us know!

[jmorrice]

Already checked and was unable to find anything, that's why I submitted it here. Any ideas what could be causing this?

[vvo]

uglifyjs does not supports minifying ES2015 (this is sad) and stringify-object is not transpiled to ES5.

I found this on uglifyjs website, maybe try https://github.com/mishoo/UglifyJS2/tree/harmony and let me know!

[vvo]

Or try this: https://github.com/babel/babili

[vvo]

Reopen another issue if you still have the issue, with a repro repository

[cedricdelpoux]

@jmorrice I have the same issue, what was your solution?

The only way I found was to disable uglifyJS from nwb config

[cedricdelpoux]

the bug is not present with the original repo https://github.com/alexlande/react-to-jsx

[vvo]

The only way I found was to disable uglifyJS from nwb config

This seems to be the way to go, you could also ask nwb to use the latest uglifyjs on their repo because more and more libraries will start shipping ES6

[cedricdelpoux]

Thank you, I asked for it

[jmorrice]

Thanks guys!