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'Error de tipo: no se pueden leer las propiedades de undefined (leyendo 'push')' cuando se usa el enlace 'useHistory' de 'react-router-dom'

Estoy tratando de usar el enlace "useHistory" de 'react-router-dom' y me encuentro con el error ' TypeError: Cannot read properties of undefined (reading 'push') '. A continuación se muestra mi código.

 import './App.css'; import { React, useState } from 'react' import Header from './Header'; import Register from './Register'; import Login from './Login'; import { BrowserRouter as Router, Switch, Route, useHistory } from 'react-router-dom' function App() { const [ loggedIn, setLoggedIn ] = useState(false) const history = useHistory() return ( <Router> <Header /> <Switch> <Route exact path='/'> {loggedIn ? <h1>Logged In</h1> : <Register setLoggedIn={setLoggedIn} />} </Route> <Route path='/log-in'> {loggedIn ? () => history.push('/') : <Login setLoggedIn={setLoggedIn} loggedIn={loggedIn} />} </Route> </Switch> </Router> ); } export default App;

¿Por qué 'history.push' está causando este error dentro de mi operador ternario?

about 4 years ago · Juan Pablo Isaza
1 answers
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import { React, useState } from 'react' import { BrowserRouter as Router, Switch, Route, useHistory } from 'react-router-dom' import Login from './login'; function App() { return ( <Router> <Switch> <Route path='/log-in'> <Login/> </Route> </Switch> </Router> ); } export default App;
 import { useEffect, useState } from "react" import { useHistory } from "react-router-dom" const Login=()=>{ const history=useHistory() const [loggedin,setloggedin]=useState(true) useEffect(()=>{ if(!loggedin){ history.push("/") } },[loggedin]) return( <div>login</div> ) } export default Login

En su código, solo se ejecutará el código dentro de su ruta, es decir

 {loggedIn ? () => history.push('/') : <Login setLoggedIn={setLoggedIn} loggedIn={loggedIn} />}

En el que no se ejecutará el código dentro del componente de su aplicación. Puedes probar el código anterior.

about 4 years ago · Juan Pablo Isaza Report
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