I'm desperately trying to figure out the best way to add focus trap to my modals in an Angular 8 application. I've stumbled upon the Angular Material CDK and installed it for the A11y Accessibility tools only but I can't figure out how to import and use `FocusTrap` or `FocusTrapFactory`.

If I try to add either to my `declarations` or `imports` arrays in `@NgModule` I get errors. Installing them in the `providers` does nothing. There's nothing I see in the docs on how to specifically pull the tools in to use. I have `cdkTrapFocus`, `cdkFocusRegionStart`, `cdkFocusInitial` and `cdkFocusRegionEnd` all setup in a modal to test. I've tried just pulling in `FocusTrap` and `FocusTrapFactory` into my component only, but still nothing.

<https://v8.material.angular.io/cdk/a11y/overview#focuskeymanager>

Has anyone successfully gotten this to work? If I have to use the Material UI tools to get this to work I will need to find another solution for trapping focus in my modals.

My modal component is a simple wrapper I open and close by ID with a service. It's basically just like: <https://jasonwatmore.com/post/2019/07/12/angular-8-custom-modal-window-dialog-box>