Auth0

OAuth 2.0 provider for Auth0.

Also see the OAuth 2.0 guide.

Initialization

The domain should not include the protocol or path.

import { Auth0 } from "arctic";

const domain = "xxx.auth0.com";
const auth0 = new Auth0(domain, clientId, clientSecret, redirectURI);

Create authorization URL

import { generateState } from "arctic";

const state = generateState();
const scopes = ["openid", "profile"];
const url = auth0.createAuthorizationURL(state, scopes);

Validate authorization code

validateAuthorizationCode() will either return an OAuth2Tokens, or throw one of OAuth2RequestError, ArcticFetchError, or a standard Error (parse errors). Auth0 returns an access token, the access token expiration, and a refresh token.

import { OAuth2RequestError, ArcticFetchError } from "arctic";

try {
	const tokens = await auth0.validateAuthorizationCode(code);
	const accessToken = tokens.accessToken();
	const accessTokenExpiresAt = tokens.accessTokenExpiresAt();
	const refreshToken = tokens.refreshToken();
} catch (e) {
	if (e instanceof OAuth2RequestError) {
		// Invalid authorization code, credentials, or redirect URI
		const code = e.code;
		// ...
	}
	if (e instanceof ArcticFetchError) {
		// Failed to call `fetch()`
		const cause = e.cause;
		// ...
	}
	// Parse error
}

Refresh access tokens

Use refreshAccessToken() to get a new access token using a refresh token. Auth0 returns the same values as during the authorization code validation. This method also returns OAuth2Tokens and throws the same errors as validateAuthorizationCode()

import { OAuth2RequestError, ArcticFetchError } from "arctic";

try {
	const tokens = await auth0.refreshAccessToken(accessToken);
	const accessToken = tokens.accessToken();
	const accessTokenExpiresAt = tokens.accessTokenExpiresAt();
	const refreshToken = tokens.refreshToken();
} catch (e) {
	if (e instanceof OAuth2RequestError) {
		// Invalid authorization code, credentials, or redirect URI
	}
	if (e instanceof ArcticFetchError) {
		// Failed to call `fetch()`
	}
	// Parse error
}

OpenID Connect

Use OpenID Connect with the openid scope to get the user's profile with an ID token or the userinfo endpoint. Arctic provides decodeIdToken() for decoding the token's payload.

const scopes = ["openid"];
const url = auth0.createAuthorizationURL(state, codeVerifier, scopes);

import { decodeIdToken } from "arctic";

const tokens = await auth0.validateAuthorizationCode(code, codeVerifier);
const idToken = tokens.idToken();
const claims = decodeIdToken(idToken);

const response = await fetch("https://xxx.auth.com/userinfo", {
	headers: {
		Authorization: `Bearer ${accessToken}`
	}
});
const user = await response.json();

Get user profile

Make sure to add the profile scope to get the user profile and the email scope to get the user email.

const scopes = ["openid", "profile", "email"];
const url = auth0.createAuthorizationURL(state, codeVerifier, scopes);

Revoke tokens

Revoke tokens with revokeToken(). Currently, only refresh tokens can be revoked. It throws the same errors as validateAuthorizationCode().

try {
	await box.revokeToken(refreshToken);
} catch (e) {
	// Handle errors
}