Code Review: Challenge Project: Appointment Planner

Hello,

I would like a code review for my code for the Appointment Planner challenge project that you can view and clone from this GitHub repository..

A comprehensive and critical review of the full project would be great from project code to file structure to read me.
I look forward to reading your review.
I am keen to do a code review myself so if you are in need of a code review then please let me know. Whether it is for this project or any of the others required on the front end or full stack paths.

Thank you.

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Thank you