function defaultActionChecker(interactable, event, interaction, element, scope) {
  const rect = interactable.getRect(element);
  const buttons = event.buttons || {
    0: 1,
    1: 4,
    3: 8,
    4: 16
  }[event.button];
  const arg = {
    action: null,
    interactable,
    interaction,
    element,
    rect,
    buttons
  };
  scope.fire('auto-start:check', arg);
  return arg.action;
}
Returns or sets whether the the cursor should be changed depending on the
action that would be performed if the mouse were pressed and dragged.

@param {boolean} [newValue]
@return {boolean | Interactable} The current setting or this Interactable