Library Build Support like ng-packager in angular cli

[imben1109]

Is your proposal related to a problem?

i cannot rely on create-react-app to build react component / library.

Describe the solution you'd like

Maybe it can rely on babel /rollup / webpack to generate react component library. The generated npm package would be very similar to one like generated by ng-packager in angular.

Describe alternatives you've considered

integrated with third party library like nwb to generate react library.

Additional context

N/A

[lmeyerov]

Adding to this:

We use an ejected CRA, with one of the main reasons to get library output:

    library: 'XYZ',
    libraryTarget: 'umd',

A flag like LIBRARY_MODE=umd (default off) to inject the above would go far