I've been using Mithril since 2017 or so. The answer is: no. To give you a production example, Mithril is used in the video game Guild Wars 2 to render the marketplace in-game and the lead web engineer reported that it was performant enough for their use-case [1]. (I've played Guild Wars 2 and never noticed any issues with it, so good enough for me).

In most cases, your bottleneck won't be Mithril (or React for that matter), but instead what expensive computations you're doing in your components. While React has React.memo, Mithril has the `onbeforeupdate` hook [2] you can use to memoize components if you need it.

[1] https://carlmungazi.github.io/sourcecodeadventures/posts/pat... [2] https://mithril.js.org/lifecycle-methods.html#avoid-prematur...

See benchmarks: https://krausest.github.io/js-framework-benchmark/2023/table...

Colleagues, ecosystem

The ecosystem, if you're building a product of a certain complexity and can't afford writing large, complex, un-battle-tested views from scratch.