Not exactly a framework, but a React app from 2014 will still work great in 2019 and can be updated with very little pain. Build tools wise, a simple Webpack/B

Not exactly a framework, but a React app from 2014 will still work great in 2019 and can be updated with very little pain. Build tools wise, a simple Webpack/Babel config from 2014 would be relatively straightforward to update to the latest versions.