Week classname support

[marcelltoth]

Description

Linked issue: #5744

Problem

See ticket.

Changes

I added a weekClassName prop to the Week component. I also added tests and a custom example.

Screenshots

To reviewers

I would personally make the function signature (date: Date) => string | undefined to allow the consumers to return undefined declaring that they do not want to add an extra class for this particular week.

To follow the convention here I decided to keep it as (date: Date) => string to be inline with what all the other classname functions are doing. Slightly less elegant but the callers can still opt out by returning an empty string I guess.

Contribution checklist

• I have followed the contributing guidelines.
• I have added sufficient test coverage for my changes.
• I have formatted my code with Prettier and checked for linting issues with ESLint for code readability.

[martijnrusschen]

Can you look into the failing test?

[martijnrusschen]

Looks like a code formatting issue

[marcelltoth]

Can you look into the failing test?

Hey @martijnrusschen, sure, I just pushed the fix.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.13%. Comparing base (ec4ce2c) to head (0c82008).
⚠️ Report is 56 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5745   +/-   ##
=======================================
  Coverage   97.12%   97.13%           
=======================================
  Files          30       30           
  Lines        3374     3383    +9     
  Branches     1424     1429    +5     
=======================================
+ Hits         3277     3286    +9     
- Misses         95       97    +2     
+ Partials        2        0    -2     

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