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Libraries like io-ts make it trivial to write type definitions once and use them both for both static and runtime checking.

• winrid 3y ago
  > Libraries like But this is already solved by so many other runtimes... Without a library..
  • golergka 3y ago
    That's why I love js ecosystem. If something is implemented in language itself, runtime or standard library, it will never meaningfully develop.
    • winrid 3y ago
      It doesn't need to be developed... An int isn't going to store a String in Java because of a bug, that doesn't require further development.