apply different tileClassNames to different days based on data?

[TSharma05]

I was wondering if there was any way to apply different tileClassNames to different days given an array of data? I'm noticing when I map over the array it works but it doesn't return the new tile className until all the data is mapped over. I'm stuck on how to do this most efficiently. I'm trying to create a sort of heatmap of the data on the calendar based on dates. I hope this made sense and thank you in advance for the help.