Uncaught TypeError: Cannot use 'in' operator to search for 'window' in undefined

[LiniovasDovydas]

Check that this is really a bug

• I confirm

Reproduction link

https://jquense.github.io/react-big-calendar/examples/index.html?path=/story/addons-drag-and-drop--example-2

Bug description

TimeGrid fails to measure gutter width due to gutter being undefined.

Expected Behavior

Gutter is measured

Actual Behavior

Fails to measure the gutter due to invalid ref to the gutter dom element

react-big-calendar version

0.40.4

React version

^16.14.0 || ^17 || ^18

Platform/Target and Browser Versions

Chrome, Edge, Firefox

Validations

• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
• Make sure this is a react-big-calendar issue and not an implementation issue

Would you like to open a PR for this bug?

• I'm willing to open a PR

[GiftedMediaBJ]

I am running into the same issues.
I found that this issue starts at 0.40.3

[cutterbl]

Resolved in 0.40.7