What is fibre in react fiber?
In Fiber, a fibre is a JavaScript object representing a unit of work. It is similar to a virtual DOM node, but it also contains additional information about the work's state, priority, and other metadata. Each fibre is associated with a component instance and represents a part of the component tree.
A fibre object contains properties such as:
type: The component type (e.g., a function or a class).
stateNode: The instance of the component or DOM node.
child: The first child fiber.
sibling: The next sibling fiber.
return: The parent fiber.
alternate: A reference to the alternate version of the fiber, used during the reconciliation process.