[adamch]

The article lists several: static typing, guarantee of zero runtime errors, sane error handling using rich enums.

Other advantages: async is baked into the framework and isn't an afterthought like React. Immutability is standard and doesn't require a competing ecosystem of immutable datastructures like React. Also significantly smaller download sizes [1]

I also question that Javascript the language doesn't change: it's gone through several big language changes, and a growing number of devs wanted more changes, so stared writing in Typescript or Flow.

[1] https://elm-lang.org/news/small-assets-without-the-headache