@forward-software/react-auth NPM

React Auth

Simplify your Auth flow when working with React apps

This React package allows you to streamline the integration of user authentication flows in any React app by providing a single unified interface

Install

npm install @forward-software/react-auth

Setup

Define an AuthClient

Create a new object that implements the AuthClient interface provided by this library. The interface includes several lifecycle methods, some of which are optional:

import type { AuthClient } from '@forward-software/react-auth';

// The type for your credentials
type AuthCredentials = {
  username: string;
  password: string;
};

// The type for your tokens
type AuthTokens = {
  authToken: string;
  refreshToken: string;
};

const authClient: AuthClient<AuthTokens, AuthCredentials> = {
  // Optional: Called when the AuthClient gets initialized
  onInit: async (): Promise<AuthTokens | null> => {
    // Implement the initialization logic for your client
    return null;
  },

  // Optional: Called after initialization completes
  onPostInit: async (): Promise<void> => {
    // Implement any post-initialization logic
  },

  // Optional: Called before login starts
  onPreLogin: async (): Promise<void> => {
    // Implement any pre-login logic
  },

  // Required: Called when login is requested
  onLogin: async (credentials?: AuthCredentials): Promise<AuthTokens> => {
    // Implement the logic required to exchange the provided credentials for user tokens
    return {
      authToken: '...',
      refreshToken: '...'
    };
  },

  // Optional: Called after login completes
  onPostLogin: async (isSuccess: boolean): Promise<void> => {
    // Implement any post-login logic
  },

  // Optional: Called before refresh starts
  onPreRefresh: async (): Promise<void> => {
    // Implement any pre-refresh logic
  },

  // Optional: Called when refresh is requested
  // The current tokens are passed as the first argument
  onRefresh: async (currentTokens: AuthTokens, minValidity?: number): Promise<AuthTokens> => {
    // Implement the logic required to refresh the current user tokens
    return {
      authToken: '...',
      refreshToken: '...'
    };
  },

  // Optional: Called after refresh completes
  onPostRefresh: async (isSuccess: boolean): Promise<void> => {
    // Implement any post-refresh logic
  },

  // Optional: Called before logout starts
  onPreLogout: async (): Promise<void> => {
    // Implement any pre-logout logic
  },

  // Optional: Called when logout is requested
  onLogout: async (): Promise<void> => {
    // Implement the logic required to invalidate the current user tokens
  },

  // Optional: Called after logout completes
  onPostLogout: async (isSuccess: boolean): Promise<void> => {
    // Implement any post-logout logic
  }
};

Use the AuthClient

The AuthClient instance can be used directly with the createAuth function:

import { createAuth } from '@forward-software/react-auth';

export const { AuthProvider, useAuthClient, authClient: enhancedAuthClient } = createAuth(authClient);

The createAuth function returns:

AuthProvider, the context Provider component that should wrap your app and provide access to your AuthClient
useAuthClient, the hook to retrieve and interact with your AuthClient
authClient, the enhanced authentication client instance

AuthProvider

The context Provider component that should wrap your app and provide access to your AuthClient, this component also accepts 2 additional props

ErrorComponent, displayed when the AuthClient initialization fails
LoadingComponent, displayed while the AuthClient is being initialized

EnhancedAuthClient

The createAuth function wraps your AuthClient implementation with an EnhancedAuthClient that provides additional functionality:

Properties

isInitialized, a boolean indicating if the AuthClient has been initialized
isAuthenticated, a boolean indicating if the login process has been successful and the user is authenticated
tokens, the current tokens returned by the login or the refresh process

Methods

init(), initialize the AuthClient (N.B. this shouldn't be called if using AuthProvider - see above)
login(credentials), start the login process
refresh(), refresh the current tokens
logout(), logout and invalidate the current tokens
on(eventName, listenerFn), subscribe to eventName events emitted by the AuthClient
off(eventName, listenerFn), unsubscribe from eventName events emitted by the AuthClient
subscribe(() => { }), subscribe to AuthClient state changes
getSnapshot(), returns the current state of the AuthClient

React components

Setup React components to interact with the AuthClient using the createAuth function exported by this library

import { createAuth } from '@forward-software/react-auth';

export const { AuthProvider, useAuthClient } = createAuth(authClient);

the createAuth function returns:

AuthProvider, the context Provider component that should wrap your app and provide access to your AuthClient
useAuthClient, the hook to retrieve and interact with your AuthClient