expect.toBeDefined()不是expect.toMatchObject()的函数

jest .

我在尝试:

const desiredResult = {
  host: '192.168.1.1',
  port: expect.any(Number),
  delta: expect.toBeDefined()
}
expect(result).toMatchObject(desiredResult)

开玩笑 是说 .toBeDefined() .any(Number)

TypeError: expect.toBeDefined is not a function
  173 |       host: '192.168.1.1',
  174 |       port: expect.any(Number),
> 175 |       delta: expect.toBeDefined()
      |                     ^
  176 |     }
  177 |     expect(portCallback.mock.calls[0][0]).toMatchObject(desiredResult)

ect(理想结果)