useErrorRoute() outside of error boundary

[rreeves8]

I have a navbar that wraps the entire app.

I want to change the navbar if an error occurs.

Is there anyway to acheive this ?

[admirsaheta]

You can achieve this either with a state management library like zustand or redux or via the context api directly e.g
Create a context to store the error state:

import React, { createContext, useState, useContext } from 'react';

const ErrorContext = createContext(null);

export function ErrorProvider({ children, error }) {
  const [errorState, setError] = useState(error);

  return (
    <ErrorContext.Provider value={{ error: errorState, setError }}>
      {children}
    </ErrorContext.Provider>
  );
}

export function useError() {
  const context = useContext(ErrorContext);
  if (!context) {
    throw new Error('useError must be used within ErrorProvider');
  }
  return context;
}

Wrap your app with the ErrorProvider at a high level, passing any initial error from your data fetching logic:

import { ErrorProvider } from './ErrorContext';

function App() {
  const [data, setData] = useState(null);
  const [error, setError] = useState(null);

  // ... data fetching logic (handle errors and update setError)

  return (
    <ErrorProvider error={error}>
      {/* Your app components here */}
    </ErrorProvider>
  );
}

In your navbar component, access the error state and conditionally render content:

import React, { useContext } from 'react';
import { useError } from './ErrorContext';

function Navbar() {
  const { error } = useError();

  return (
    <nav>
      {/* Standard navbar content */}
      {error && <p>Error: {error.message}</p>}
    </nav>
  );
}