My pomodoro Clock - Feedback

Hello there,

I finished my app using React - Redux. However, I do have some doubts concerning my code, I used two global in my Controls.js file in order to make the beep sound and to make the timer work.

Does anybody have a better solution for that?
Besides that, any other feedback would be awesome whether for code optimization or file structure.

Here are the links to my project:

Thank you! :smiley: