keycloak-js

What is keycloak-js?

The keycloak-js npm package is a JavaScript adapter for Keycloak, an open-source identity and access management solution. It allows developers to integrate Keycloak's authentication and authorization capabilities into their web applications.

What are keycloak-js's main functionalities?

Initialize Keycloak

This feature initializes the Keycloak instance and checks if the user is authenticated. If the user is not authenticated, it redirects them to the login page.

const keycloak = new Keycloak();
keycloak.init({ onLoad: 'login-required' }).then(authenticated => {
  console.log(authenticated ? 'Authenticated' : 'Not authenticated');
}).catch(err => {
  console.error('Failed to initialize Keycloak', err);
});

Login

This feature triggers the login process, redirecting the user to the Keycloak login page.

keycloak.login().then(() => {
  console.log('User logged in');
}).catch(err => {
  console.error('Failed to login', err);
});

Logout

This feature logs the user out of the application and redirects them to the Keycloak logout page.

keycloak.logout().then(() => {
  console.log('User logged out');
}).catch(err => {
  console.error('Failed to logout', err);
});

Check Authentication

This feature checks if the user's token is still valid and refreshes it if necessary.

keycloak.updateToken(30).then(refreshed => {
  if (refreshed) {
    console.log('Token refreshed');
  } else {
    console.log('Token not refreshed, valid for ' + Math.round(keycloak.tokenParsed.exp + keycloak.timeSkew - new Date().getTime() / 1000) + ' seconds');
  }
}).catch(err => {
  console.error('Failed to refresh token', err);
});

Get User Profile

This feature retrieves the user's profile information from Keycloak.

keycloak.loadUserProfile().then(profile => {
  console.log('User profile', profile);
}).catch(err => {
  console.error('Failed to load user profile', err);
});

Other packages similar to keycloak-js

auth0-js

The auth0-js package is a client-side library for integrating Auth0 authentication and authorization into web applications. It provides similar functionalities to keycloak-js, such as login, logout, and token management, but is designed to work with the Auth0 identity platform.

oidc-client

The oidc-client package is a JavaScript library for OpenID Connect (OIDC) and OAuth2. It provides features for user authentication, token management, and session handling. While it is not tied to a specific identity provider like keycloak-js, it can be used with any OIDC-compliant provider.

firebase

The firebase package includes Firebase Authentication, which provides backend services for easy use of authentication and authorization. It supports various authentication methods, including email/password, phone, and third-party providers like Google and Facebook. Unlike keycloak-js, it is part of the larger Firebase platform.

README

Keycloak JS

The documentation can be found in the Keycloak documentation.