[run-types]

For those looking to sanitize input from Typescript, I highly recommend the runtypes library: https://github.com/pelotom/runtypes

It let's you specify type definitions a DSL in Typescript using syntax very similar to Typescript's type definitions. Once you define your types in the DSL, you get Typescript types and parsing / verification for free. Not as general purpose as JSON Schema, but 1000x cleaner and easier to use.

[dolmen]

The point of JSON Schema is to have a common format independant of the programming language to ease interoperability.

[move-on-by]

I've never seen runtypes, but I've seen io-ts [1]. Are you aware of the pros/cons between them?

[1] https://gcanti.github.io/io-ts/

[run-types]

They look roughly the same