Category: reactjs

From : https://stackoverflow.com/questions/58603209/react-hooks-render-twice It's an intentional feature of the StrictMode. This only happens in development, and helps find accidental side effects put into the render phase. We only do this for components with Hooks...

Cannot log after tests are done. Did you forget to wait for something async in your test? useEffect(() => { console.log("client register", uniqueIdFormInput); formAggregatorRef.current.register(uniqueIdFormInput); return () => { console.log('cleanup unregister'); formAggregatorRef.current.unregister(uniqueIdFormInput); }; }, []);...

console.warn react-i18next:: You will need pass in an i18next instance by using initReactI18next Solution jest.mock('react-i18next', () => ({ // this mock makes sure any components using the translate hook can use it without a...

Expected ref to be a function, a string, an object returned by React.createRef(), or null. Code test('MultipleFormAggregator to prevent an invalid form submit two times in a row', () => {   const formAggregatorRef = useRef<MultipleFormAggregatorRef>(null);   const component = renderer.create(     <div>       <MultipleFormAggregator ref={formAggregatorRef} />     </div>,   );  (...) }); Solution Create a jig, dont use ref in your...

Solution Add "@babel/typescript" to your project as well as in the babel.config.js file : module.exports = {   presets: [     '@babel/preset-env',     '@babel/preset-react',     "@babel/typescript",   ],   plugins: [     "@babel/plugin-proposal-export-default-from",   ], };

SyntaxError: C:\dev\mx4d-ui\src\js\component\multiple-form-aggregator.tsx: Support for the experimental syntax 'exportDefaultFrom' isn't currently enabled (5:8): 3 | import { log } from 'src/js/service/logger'; 4 | > 5 | export interface FormAggregatorClientInterface { Solution Install npm package @babel/plugin-proposal-export-default-from $...

(8/18): docker-ce-cli-20.10.1-3.el7.x86_64.rpm | 33 MB 00:00:01 (9/18): mock-core-configs-33.3-1.el7.noarch.rpm | 59 kB 00:00:00 nodejs-10.23.0-1nodesource.x86 FAILED MB 00:00:05 ETA https://rpm.nodesource.com/pub_10.x/el/7/x86_64/nodejs-10.23.0-1nodesource.x86_64.rpm: [Errno -1] Package does not match intended download. Suggestion: run yum --enablerepo=nodesource clean metadata Trying other...

$ next build next : The term 'next' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was...

This can happen when you use forwardRef() in React on your own function component. Component definition is missing display name  react/display-name   Solution interface IsSavedProps {   className?: string; } export interface IsSavedRef {   show: () => void; } export const RebootIsSaved = forwardRef((props: IsSavedProps, ref: Ref<IsSavedRef>) => {    const { className, ...rest } = props; (...)   const show = () => {     isSavedTask();...

ERROR in ./node_modules/bindings/bindings.js Module not found: Error: Can't resolve 'fs' in 'C:\dev\angular-electron\node_modules\bindings' ERROR in ./node_modules/bindings/bindings.js Module not found: Error: Can't resolve 'path' in 'C:\dev\angular-electron\node_modules\bindings' ERROR in ./node_modules/file-uri-to-path/index.js Module not found: Error: Can't resolve 'path'...