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How does one validate typescript models at runtime? I have seen combinations of JSON schema and validator libraries but I'd love to do it using typescript's typ

How does one validate typescript models at runtime? I have seen combinations of JSON schema and validator libraries but I'd love to do it using typescript's type system. From my understanding, it doesn't work because of type erasure.

ng12 9y ago
AFAIK there's no good solution. That's why it works best when your back end is using Typescript as well -- your route returns the same interface the client is expecting.
- jononor 9y ago
  This goes out the window when you have multiple deployed/running versions of your client or server.
  - mercer 9y ago
    Would one solve this by versioning the types somehow? Honest question; I'm pretty new to TS.
STRiDEX 9y ago
You don't. You'd have to use something like https://github.com/hapijs/joi https://github.com/hapijs/joi
gcanti 9y ago
This is a TypeScript compatible runtime type system for IO validation https://github.com/gcanti/io-ts https://github.com/gcanti/io-ts