Super expression must either be null or a function, not undefined

[mreorhan]

I have imported, and I have some troubles: Super expression must either be null or a function, not undefined

[chitwarnold]

downgrade to version 1.4.2
when i downgraded by charts are loading just fine.

$ npm uninstall react-sparklines --save

Thereafter install version 1.4.2

$ npm install react-sparklines@1.4.2 --save

All The Best

[cmendozalugo]

I tried the solution proposed by chitwarnold but does not work in my case. It keeps returning the same error.

[LionRoar]

Just make sure you're using the latest version of React.

[ashish1409]

Hi @chitwarnold
Thanks for solution ( npm install react-sparklines@1.4.2 --save ) this package working fine
but still latest version not working
Like (1.5.1 / 1.7.0)

Thanks :)