Function fetchNumber

packages/react-query/src/__tests__/useQuery.test.tsx:6156–6159

(id: number)

    const spy = vi.fn()

    async function fetchNumber(id: number) {
      await sleep(5)
      return { numbers: { current: { id } } }
    }

    function Test() {
      const [id, setId] = React.useState(1)