How are Jest mocks structured for different npm package imports/exports?

Using Jest testing in a React Native Expo project

I’m trying to mock some node modules in my project, but many of them have different import export methods.

1 Some are destructured:

import { myFunc } from 'my-module'

2 Some are default:

import myModule from 'my-module'

3 Some are the everything import:

import * as myModule from 'my-module'

4 In other cases, I need to mock a nested function like:

myModule.dosomething()

How do I mock each of these? I cannot for the life of me find a guide that explains it.