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Not GP, but as a developer working with TypeScript and C#, I respectfully disagree regarding the type system. There are many things I like better in C# compared to JavaScript, but I feel overly constrained by the type system of C# way more often, and most notable is the lack of discriminated unions (aka sum types etc). You can say that something has this and that, but not that it is this or that.

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I agree, as a mostly C# developer for years, then Typescript (Node, Angular and React) for the last couple of years, when I go back to C# projects, I feel like I'm doing a lot of work for the compiler. And really elegant use of the TS type system doesn't translate well into C# many times, forcing me to write boilerplate.

I've been eyeing F# for more elegant managed code, but that's going to take me a little more up-front investment to get productive.

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