[Bug]: Unable to use jest.mock

Version

27.1.2

Steps to reproduce

1. Clone this repo
2. cd examples/ts-only
3. npm i
4. Add jest.mock('example'); to src/welcome-message.spec.ts
5. Run npm run test-esm

Expected behavior

Jest to run without an error and for the jest mocking to work correctly.

Actual behavior

I get the following error: ReferenceError: jest is not defined

Debug log

I can’t post a debug log because GitHub Issues throws an error with There was an error creating your Issue: body is too long (maximum is 65536 characters).

Additional context

I’ve tried importing jest from @jest/globals which resolved the error but then the mocking does not work.

It would be useful if you could provide a working mocking example.

Environment

System:
    OS: macOS 11.6
    CPU: (8) arm64 Apple M1
  Binaries:
    Node: 16.13.1 - ~/.nvm/versions/node/v16.13.1/bin/node
    npm: 8.3.0 - ~/.nvm/versions/node/v16.13.1/bin/npm
  npmPackages:
    jest: ^27.3.1 => 27.4.3 

[ahnpnl]

Feel free to submit a PR 😃 The location for docs will be:

• https://github.com/kulshekhar/ts-jest/blob/main/website/docs/guides/esm-support.md
• https://github.com/kulshekhar/ts-jest/blob/main/website/versioned_docs/version-27.0/guides/esm-support.md
• https://github.com/kulshekhar/ts-jest/blob/main/website/versioned_docs/version-27.1/guides/esm-support.md

[ahnpnl]

jest.mock isn’t supported in ESM mode yet, see https://github.com/facebook/jest/pull/10976

Also you should take a look at https://github.com/facebook/jest/issues/9430 and search for keyword jest.(do|un)mock

I can conclude this is not an issue for ts-jest but for Jest itself.