Memory Leaking on React challenges

I’m having problems with memory leaking running the unit tests from some challenges from in the React (Front End) Module.
I’ve had this problem with challenges like:
https://learn.freecodecamp.org/front-end-libraries/react/compose-react-components
https://learn.freecodecamp.org/front-end-libraries/react/create-a-component-with-composition
for example.
I’ve tried using Firefox for both the challenges listed above and
https://learn.freecodecamp.org/front-end-libraries/react/use-react-to-render-nested-components
but it was causing memory leaking. I could make it pass this last challenge listed above using Chrome, but the other two were also memory leaking and even using swap with both browsers.

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