temporal-polyfill

The temporal-polyfill package is now a peer dependency of all the FullCalendar packages. This means you are required to install it.

The “Temporal” built-in browser API is coming to all modern browsers, and this package is a polyfill for it, which means it allows you to use it before it’s officially supported.

FullCalendar DOES NOT INSTALL IT GLOBALLY but instead uses it internally. For v7, FullCalendar uses the tree-shakeable API, meaning the code-size impact will be minimal and there will be no side-effects.

Though FullCalendar does not install the polyfill globally, you are welcome to do so for your projects:

import 'temporal-polyfill/global'