Chrome Framework Fund Proposal Umbrella

[iansu]

This issue is part of our application for the Chrome Framework Fund: https://docs.google.com/forms/d/e/1FAIpQLSdwM-2Xw-HXa5fqT8MsGW7AsMv9KC1VEoprJtXxrwdH9_Q1_Q/viewform

There are a number of performance related improvements we can make in Create React App. We'll collect them here and add to this list as we think of more.

Proposed Improvements

• Modern build mode with module/nomodule - WIP: Add option to build modern ES6 code #4964
• Better performance budget reporting
• Encourage/demonstrate route-based code splitting in default template
• Upgrade to webpack 5
• Improve service worker and other PWA features (possibly by creating a dedicated template for PWAs)

[mrmckeb]

Thanks @iansu. I think it would be great to start looking at performance budgets, code splitting, and other areas that we can continue to optimise. I think that'll be something the Chrome team would love to be involved in.