Webpack 4 : Not possible to compile :(

[Asthonishia]

Here is the error message that i have :

./node_modules/react-absolute-grid/lib/AbsoluteGrid.jsx Module parse failed: Unexpected token (17:24) You may need an appropriate loader to handle this file type. | | return class extends Comp { | static defaultProps = { | items: [], | keyProp: 'key',
This error occurred during the build time and cannot be dismissed.

It is impossible for me actually to use the component :(.
I have webpack 4 and jsx is activated in config file.

I just tried to implement the exemple of the doc in a fonctionnal project.