webpack library configuration

[MerrickGit]

Is your proposal related to a problem?

We want to use monorepo project and create-react-app, but we cant to create library with help of react-create-app.

Describe the solution you'd like

Into .env file we can add LIBRARY_NAME and LIBRARY_TARGET configuration parameters and after that these are used to webpack.config.js

Example:

// file: create-react-app/packages/react-scripts/config/webpack.config.js
//...
output: {
  library: env.LIBRARY_NAME,
  libraryTarget: env.LIBRARY_TARGET
//...