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tossandthrow • 04/01/2025 • 1 reply • view on HN

> you have JS in production; your TS is only in dev.

As my sibling says, this is wrong. We indeed have TS in production.

Even for the parts that are being compiled to JS: You wouldn't say: You can not have C++ in production, only binaries.

The fact is that we don't write any JS as a part of our platform.

> It's not that you can't; it's that you choose not to

I think I made that quite clear in my comment.

> a language across the entire stack with mature wide adopted frameworks and libraries

Replies

CharlieDigital • 04/01/2025

    > Even for the parts that are being compiled to JS: You wouldn't say: You can not have C++ in production, only binaries.
I would say that because it can be decompiled; the type information is still present. Same with C#. I can decompile the binary and still see the type information.

The process of going from TS to JS is lossy; you cannot get back the type information.

I would absolutely say "I have C++ in production" or "I have C# in production" but not say "I have TypeScript in production". "We build our app with TypeScript" is accurate, but it is transpiled -- not compiled -- into JavaScript. Your Node.js server then interprets that JavaScript and executes C++.

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