Failed to Compile due to babel-loaders

[joaortizro]

when installing on a new react project , babel loaders suggest to add extra configuration.

[joaortizro]

anyone having the same problems?

[arnog]

This is a duplicate of arnog/mathlive#1123

[joaortizro]

@arnog it seems it's a problem with the react-scripts versions, i've tried 3.3.0,3.4.0 and 3.4.1 and still no success, but there was a change , now the error is on the ''??" operator, will dig futher and report any updates

[arnog]

@joaortizro yes, it's due to some tools in the react-cli toolchain still using webpack-4, which does not support the ?? operator. The fix is in the mathlive depot, which is to target es2019 instead of the current version of Javascript. But maybe you can find a way to configure react-cli to use webpack-5.