How to import module like 'MyOwnLibrary/data'

I'm working on a two-package project using Typescript & React-Native:

PackageA(which is leaf package) contains a REST client and mocks

MyOwnLibrary
- src
  -tests
    _mocks_
      -restClientMock.ts
  -restClient.ts

Right now, I can import stuff using something like 'import { restClient } from 'MyOwnLibrary/lib/tests/_mocks'

But, I want to consume the mocks like import { restClient } from 'MyOwnLibrary/mocks'

Any ideas how to get this done?