Function renderHook

src/pure.js:320–357

(renderCallback, options = {})

}

function renderHook(renderCallback, options = {}) {
  const {initialProps, ...renderOptions} = options

  if (renderOptions.legacyRoot && typeof ReactDOM.render !== 'function') {
    const error = new Error(
      '`legacyRoot: true` is not supported in this version of React. ' +
        'If your app runs React 19 or later, you should remove this flag. ' +
        'If your app runs React 18 or earlier, visit https://react.dev/blog/2022/03/08/react-18-upgrade-guide for upgrade instructions.',
    )
    Error.captureStackTrace(error, renderHook)
    throw error
  }

  const result = React.createRef()

  function TestComponent({renderCallbackProps}) {
    const pendingResult = renderCallback(renderCallbackProps)

    React.useEffect(() => {
      result.current = pendingResult
    })

    return null
  }

  const {rerender: baseRerender, unmount} = render(
    <TestComponent renderCallbackProps={initialProps} />,
    renderOptions,
  )

  function rerender(rerenderCallbackProps) {
    return baseRerender(
      <TestComponent renderCallbackProps={rerenderCallbackProps} />,
    )
  }

  return {result, rerender, unmount}
}

// just re-export everything from dom-testing-library
export * from '@testing-library/dom'