this post was submitted on 31 Mar 2025
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Suggest tools for runtime JSON validation? (sh.itjust.works)
submitted 3 months ago by [email protected] to c/[email protected]
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I'd like to validate untrusted config JSON submitted to my application against a TypeScript interface. If it's bad, I'd like to serialize a TypeScript object with default values, and suggest it as a pattern.

Last time I looked, TypeScript didn't provide runtime access to types and interfaces, so I'm not clear if that's possible without build-time tomfoolery.

I'd prefer to avoid JSON schemas if I can, but I guess that's an option too.

Are there libraries or new-ish language features that I could use?

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