Keycloak React Web has been built on top of keycloak-js extending all of its functionalities to provide a global authentication support for your react applications.

Using npm :

npm i keycloak-react-web

• Wrap your application inside the given provider.

  import { KeycloakProvider } from "keycloak-react-web";
  
  <KeycloakProvider client={authInstance} initOptions={{initOptions}}>
    <YOUR APP CODE GOES HERE>
  </KeycloakProvider>
  

  Here "authInstance" is a Keycloak instance having proper configuration of realm, clientIds, urls of keycloak and can be initialized like:

  const authInstance = new Keycloak(keycloakSetting)
  

  where

  const keycloakSetting = {
    url: <keycloak base url>,
    realm: <keycloak realm name>,
    clientId: <keycloak client id>
  };
  
  

  initOptions: <optional>
  

  This is an optional field. Refer option parameter of init function https://www.keycloak.org/docs/latest/securing_apps/index.html#methods

• You can use provided custom hook to check the authentication status for all your private routes/components as:

    import { useKeycloak } from "keycloak-react-web";
  
    const { keycloak, initialized } = useKeycloak();
  

  check if user is authenticated or not:

    const authenticated = keycloak.authenticated
  

  Getting tokens

    const token = keycloak.token;
    const refreshToken = keycloak.refreshToken;
  

  refer https://www.keycloak.org/docs/latest/securing_apps/index.html#_javascript_adapter for all available properties present on keycloak instance.

Expample shows private route which will be accessible to authenticated users

import React from 'react';
import { BrowserRouter as Router, Routes, Route } from 'react-router-dom';
import { KeycloakProvider, useKeycloak } from "keycloak-react-web"
import Keycloak from 'keycloak-js';

const keycloakSetting = {
    url: <keycloak base url>,
    realm: <keycloak realm name>,
    clientId: <keycloak client id>
  };

const authInstance = new Keycloak(keycloakSetting)

function App() {
  return (
    <KeycloakProvider client={authInstance}>
      <Router>
        <Routes>
          <Route
            path={'/'}
            element={<PrivateRoute component={Component} />}
          />
        </Routes>
      </Router>
    </KeycloakProvider>
  );
}

const PrivateRoute = ({ component: Component }) => {
  const { keycloak, initialized } = useKeycloak();
  const context = useContext(UserContext);

  useEffect(() => {
    if (initialized) {
      if (!keycloak.authenticated) {
        keycloak.login();
      }
    }
  }, [initialized]);

  if (!initialized) {
    return <p>Loading...</p>;
  }

  if (!keycloak.authenticated) {
    return <p>Authenticating...</p>;
  }

  return (
    <Component />
  );
};

• To simplify usage of keycloak-js within React applications.
• Because it provides simple access management solution for modern React applications.

• We made use of existing keycloak-js library to build a custom hook and made the whole development React friendly.
• We have created a Context Provider called KeycloakProvider which provides global user authentication management system that can be used at private route levels.