[wip don't review] Hooks/improved types

[nick-Ag]

A summary of your pull request, including the what change you're making and why.

Testing

Include any additional information about the testing you have completed to ensure your changes behave as expected. For a speedy review, please check any of the tasks you completed below during your testing.

• [ ] Added unit tests for new functionality
• [ ] Tested end-to-end using the local server
• [ ] [Segmenters] Tested in the staging environment