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It's written in Typescript, which is a super weird choice.

• huflungdung 1y ago
  [dead]
• wiseowise 1y ago
  Wasn’t pyright made specifically for VSCode? That would explain TS.
  • f311a 1y ago
    Yes, but why they did not write it in a compiled language? Pyright is pretty slow in large code bases and takes a lot of RAM. Javascript can be faster than python in some cases, but Python is so easily extendable with C,C++, Cython, Rust. They could use Python with one of the compiled language.
    • IshKebab 1y ago
      Because they wanted it to be usable on the web, and I guess WASM wasn't where it is right now when they started.