Function getForwardProps

packages/core/src/helpers.ts:158–174

* Extract any properties whose keys are *not* reserved for customizing your * animations. All hooks use this function, which means `useTransition` props * are reserved for `useSpring` calls, etc.

(
  props: Props
)

 * are reserved for `useSpring` calls, etc.
 */
function getForwardProps<Props extends ReservedProps>(
  props: Props
): ForwardProps<Props> | undefined {
  const forward: any = {}

  let count = 0
  eachProp(props, (value, prop) => {
    if (!RESERVED_PROPS[prop]) {
      forward[prop] = value
      count++
    }
  })

  if (count) {
    return forward
  }
}

/**
 * Clone the given `props` and move all non-reserved props