> Why is the demo impressive https://mpa.nuejs.org/app/ I believe someone can do the same web-app in React with the same performance
Weren't the main points on the main page that it was small ("lighter than a React button"), and could handle large amounts of records ("far past where JavaScript (and React) would crash with a stack overflow error")?
Those points are only true if you're comparing to a React app that uses bloated frameworks and inefficient list manipulation (as other commenters pointed out, `list.push(...items)` causes problems)