Function useHandler

useHandler<A, R>(fn): ((...args: A) => R | undefined)
Returns a stable function identity that is no-op during initial render and after unmount.
Type Parameters
- A extends any[]
  Arguments of a handler.
- R
  A return value of a handler.
Parameters
- fn: undefined | null | ((...args: A) => R)
  A callback that is called by the returned handler.
Returns ((...args: A) => R | undefined)
A stable function identity.
- - (...args): R | undefined
  - Parameters
    - Rest...args: A
    Returns R | undefined