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Questions - react-18

Why render error in react v18 occures although I do not use legacy code?

Hy, guys! I have a render error in my react v18 code like this: Warning: react-dom.development.js:86 Warning: ReactDOM.render is no longer supported in React 18. Use createRoot instead. Until you swi...
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DenisF

reactjs

render

react-dom

legacy-code

react-18

Votes: 0

Answers: 1

Latest Answer

To Resolve this error. Actually this is due to the version mismatch.React upgrade to Version 18, you created app with React 18 version which expect you to render in that way.But your react-testing-lib...
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vardhan

React 18 useId cannot be in key

The error: React Hook "useId" cannot be called inside a callback. React Hooks must be called in a React function component or a custom React Hook function. So, question, where we can use use...
test-img

Ferel Ultra

reactjs

react-18

Votes: 0

Answers: 2

Latest Answer

According documentation: const Component = () => { // outside callback const id = useId(); return array.map((item, index) => <div key={`${id}-${index}`}>some content</div> }
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job.js.org

Firebase Auth not working properly with React 18

My environment Operating System version: macOS Monterey 12.3.1 Browser version: Chrome 100.0.4896.60 Firebase SDK version: 9.6.10 Firebase Product: auth Relevant Code: // src/index.js import React f...
test-img

Semih R. G&#252;rel

firebase

firebase-authentication

react-dom

react-18

Votes: 0

Answers: 0

TypeError: Cannot set property &#39;usingClientEntryPoint&#39; of undefined

In react-18.0.0 version app I'm writing test case for index.js file I'm getting following error ● Application root › should render without crashing TypeError: Cannot set property 'usingClientEntryPoin...
test-img

KARTHIKEYAN.A

javascript

reactjs

jestjs

react-testing-library

react-18

Votes: 0

Answers: 1

Latest Answer

As you are mocking react-dom and since createRoot is exposed from react-dom/client, you would need to do this way instead: jest.mock("react-dom/client", () => ({ createRoot: jest.fn()....
test-img

prasad mestha

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