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v6.2.0-alpha.16 - "init is not a function"

See original GitHub issue

Upon starting, the storybook renders an empty screen with the following error in the console:

Uncaught TypeError: init is not a function
    at mountLazyComponent (vendors~main.041dab005b25a81e4fed.bundle.js:128889)
    at beginWork (vendors~main.041dab005b25a81e4fed.bundle.js:130282)
    at HTMLUnknownElement.callCallback (vendors~main.041dab005b25a81e4fed.bundle.js:115172)
    at Object.invokeGuardedCallbackDev (vendors~main.041dab005b25a81e4fed.bundle.js:115221)
    at invokeGuardedCallback (vendors~main.041dab005b25a81e4fed.bundle.js:115283)
    at beginWork$1 (vendors~main.041dab005b25a81e4fed.bundle.js:135186)
    at performUnitOfWork (vendors~main.041dab005b25a81e4fed.bundle.js:133998)
    at workLoopSync (vendors~main.041dab005b25a81e4fed.bundle.js:133929)
    at renderRootSync (vendors~main.041dab005b25a81e4fed.bundle.js:133892)
    at performSyncWorkOnRoot (vendors~main.041dab005b25a81e4fed.bundle.js:133515)
vendors~main.041dab005b25a81e4fed.bundle.js:131312 The above error occurred in one of your React components:

    at Lazy
    at Suspense
    at Scroller (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:21270:25)
    at render
    at nav
    at render
    at http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:39418:29
    at ManagerConsumer (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:9720:28)
    at div
    at render
    at Sidebar (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:33866:28)
    at Layout (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:34048:5)
    at render
    at http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:34404:20
    at div
    at render
    at http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:33576:23
    at SizeMeReferenceWrapper (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:143326:5)
    at SizeMeRenderer(Component) (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:143379:29)
    at SizeMe(Component) (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:143460:9)
    at ThemeProvider
    at http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:41760:25
    at ManagerConsumer (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:9720:28)
    at EffectOnMount (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:9707:24)
    at Manager (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:9566:5)
    at Location (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:4806:23)
    at QueryLocation (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:32015:24)
    at LocationProvider (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:4826:5)
    at HelmetProvider (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:139518:5403)
    at Root (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:41742:23)

React will try to recreate this component tree from scratch using the error boundary you provided, LocationProvider.
logCapturedError @ vendors~main.041dab005b25a81e4fed.bundle.js:131312
vendors~main.041dab005b25a81e4fed.bundle.js:4852 Uncaught TypeError: init is not a function
    at mountLazyComponent (vendors~main.041dab005b25a81e4fed.bundle.js:128889)
    at beginWork (vendors~main.041dab005b25a81e4fed.bundle.js:130282)
    at HTMLUnknownElement.callCallback (vendors~main.041dab005b25a81e4fed.bundle.js:115172)
    at Object.invokeGuardedCallbackDev (vendors~main.041dab005b25a81e4fed.bundle.js:115221)
    at invokeGuardedCallback (vendors~main.041dab005b25a81e4fed.bundle.js:115283)
    at beginWork$1 (vendors~main.041dab005b25a81e4fed.bundle.js:135186)
    at performUnitOfWork (vendors~main.041dab005b25a81e4fed.bundle.js:133998)
    at workLoopSync (vendors~main.041dab005b25a81e4fed.bundle.js:133929)
    at renderRootSync (vendors~main.041dab005b25a81e4fed.bundle.js:133892)
    at performSyncWorkOnRoot (vendors~main.041dab005b25a81e4fed.bundle.js:133515)
vendors~main.041dab005b25a81e4fed.bundle.js:131312 The above error occurred in the <LocationProvider> component:

    at LocationProvider (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:4826:5)
    at HelmetProvider (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:139518:5403)
    at Root (http://localhost:6006/vendors~main.041dab005b25a81e4fed.bundle.js:41742:23)

Consider adding an error boundary to your tree to customize error handling behavior.
Visit https://reactjs.org/link/error-boundaries to learn more about error boundaries.
logCapturedError @ vendors~main.041dab005b25a81e4fed.bundle.js:131312
vendors~main.041dab005b25a81e4fed.bundle.js:122567 Uncaught TypeError: init is not a function
    at mountLazyComponent (vendors~main.041dab005b25a81e4fed.bundle.js:128889)
    at beginWork (vendors~main.041dab005b25a81e4fed.bundle.js:130282)
    at HTMLUnknownElement.callCallback (vendors~main.041dab005b25a81e4fed.bundle.js:115172)
    at Object.invokeGuardedCallbackDev (vendors~main.041dab005b25a81e4fed.bundle.js:115221)
    at invokeGuardedCallback (vendors~main.041dab005b25a81e4fed.bundle.js:115283)
    at beginWork$1 (vendors~main.041dab005b25a81e4fed.bundle.js:135186)
    at performUnitOfWork (vendors~main.041dab005b25a81e4fed.bundle.js:133998)
    at workLoopSync (vendors~main.041dab005b25a81e4fed.bundle.js:133929)
    at renderRootSync (vendors~main.041dab005b25a81e4fed.bundle.js:133892)
    at performSyncWorkOnRoot (vendors~main.041dab005b25a81e4fed.bundle.js:133515)

┆Issue is synchronized with this Asana task by Unito

Issue Analytics

State:
Created 3 years ago
Comments:20 (6 by maintainers)

Top GitHub Comments

2reactions

ccromnowcommented, Oct 5, 2021

If anyone els end up here after googling the error (like me): Uncaught TypeError: init is not a function

It seam to be caused by miss matched React versions. so just check your deps with npm list or yarn list to make sure you’ve not ended up with conflicting react versions.

Had a component lib based on React 17 and my storybook project had a React 16 dep.

2reactions

gavinxgucommented, May 6, 2021

I reproduced this error. I have a workspace in which both React17 and React16 and ReactDOM16 and ReactDOM17 are installed. The implementation of React.lazy has changed. React16.13 has no init property，but React16.14 and React17 has init property.

https://github.com/facebook/react/blob/v16.13.1/packages/react/src/ReactLazy.js#L13 https://github.com/facebook/react/blob/v16.14.0/packages/react/src/ReactLazy.js#L110

https://github.com/facebook/react/blob/fc33f12bdee1d0ffbcc83d25199cdf4d47252736/packages/react-reconciler/src/ReactFiberBeginWork.old.js#L1289 https://github.com/facebook/react/blob/v16.13.1/packages/react-reconciler/src/ReactFiberBeginWork.js#L1115

BUT in pkg React16.14，the React.lazy function in the dist file react.development.js has no init property.

I think maybe this is a bug about React16.14.