Description

Summary of Changes

This PR migrates the integration tests for gridfs. The changes include:

• Big refactoring for stream tests (removing duplicates, using async/await, and modern Node.js utilities to work with streams)
• Import directly from the src folder, convert .js into .ts

Notes for Reviewers

To simplify the review process, this PR is split into several commits:

• Several commits only contain small changes (up to 8 lines) with either types or imports or linter fixes
• The biggest commit contains all the refactoring, I put extra effort to avoid structural changes (I hope it will still be possible to compare changes line by line or at least block by block). Please let me know if you would want me to split this commit into smaller chunks.

Those tests are quite old, some of them test callbacks and promises API separately, that's why I have removed a few.

What is the motivation for this change?

This work is part of a larger, ongoing initiative to convert all tests to use async/await, with the ultimate goal of removing the legacy driver wrapper.

Double check the following

• Lint is passing (npm run check:lint)
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket