DeepPartialType

[1993alexey]

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe it

Mapped types is a great way to reduce boilerplate code. I have a standard backend service that exposes a few endpoints. Along with this service, I also have an SDK that reuses the same DTOs as the backend service. The problem is that PartialType is only doing a shallow implementation. My multi-level DTOs now require users to specify all of the properties in nested layers instead of making them optional.

Describe the solution you'd like

It would be great to have DeepPartialType so that all nested layers become optional

Teachability, documentation, adoption, migration strategy

Usage is identical to PartialType

What is the motivation / use case for changing the behavior?

To reduce boilerplate code and make developer life easier