Function useHandler

useHandler<A extends any[], R>(
fn: undefined | null | ((...args: A) => R),
): (...args: A) => undefined | R
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) => undefined | R
A stable function identity.