Vue3 upgrade: VueObserveVisibility

[severinbeauvais]

No description provided.

[severinbeauvais]

@cameron-eyds Can you please describe your solution here?

[cameron-eyds]

@severinbeauvais Sorry, i was incorrect about the observer, it's not baked into Vue, it's a vanilla js api.
https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API

Example of our usage (basically the same as the docs): https://github.com/bcgov/ppr/blob/Vue3-Upgrade-Feature-Branch/ppr-ui/src/components/tables/common/TableObserver.vue