title Type – LayoutEventHandlers

type LayoutEventHandlers = {
  scroll?: (
    dx: number | null,
    dy: number | null,
  ) => void,
  wheel?: (
    e: WheelEvent,
    x: number,
    y: number,
  ) => void,
  pointerDown?: (
    e: PointerEvent,
    x: number,
    y: number,
  ) => void,
  pointerMove?: (
    e: PointerEvent,
    x: number,
    y: number,
  ) => void,
  pointerUp?: (
    e: PointerEvent,
    x: number,
    y: number,
  ) => void,
}

Source

packages / layout / src / types.ts