[aaronmu]

I've been using F#, Giraffe, Fable.React/Feliz, and Fable.Remoting in production for the past four years. Fable enabled us to grow and maintain a stable team of people that work both server- and client-side. You can join our team without any prior javascript experience and we'll have you productive in days.

It does not and cannot take away the complexity of writing an SPA in React. If you want to write a high quality SPA in React using Fable, you'll still need React, webpack, ... expertise in the team.

I know that in theory we all write perfect apps and have test suites with 100% coverage that do not hinder us as we change the codebase. Reality is much different though. You are behind on a deadline, your spouse and kids are home with COVID, and the junior has made 20 changes that should've been in prod last week but aren't because you haven't had the chance to review them. This is where F# shines. Merge the shit code to prod (after maybe some manual testing :P). You will be able to refactor it later with relatively high confidence.

The interest on technical debt in F# is so much lower compared to any other language I've used in prod (C#, Typescript, Javascript, and PHP).