Function testIsRef

packages/core/src/hooks/useSpring.test.tsx:462–475

(ref: SpringRef | null)

}

function testIsRef(ref: SpringRef | null) {
  const props = [
    'add',
    'delete',
    'pause',
    'resume',
    'set',
    'start',
    'stop',
    'update',
    '_getProps',
  ]
  props.forEach(prop => expect(ref).toHaveProperty(prop))
}