[Feature]: Properly export type utils or move to separate lib

[rethab]

🚀 Feature Proposal

with #2096 the utility types were exported. while they can now be used by other projects, the import from 'ts-jest/dist/utils/testing' makes it feel like it might not have been intended to really be used by other projects :)

What do you think about this? Do you think they should be used by other projects and therefore exported from the top level? Or should these types be moved to a separate project? Either a new one, jest or jest-extended?

Motivation

These types are super useful in projects. Implementing this proposal will give them a feel of first-class support :)

Example

No response

[ahnpnl]

I think make it to export from top level is the easiest choice.