docs: add Authentication API migration guide (auth0-auth-js / auth0-server-js) - #1395
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docs: add Authentication API migration guide (auth0-auth-js / auth0-server-js)#1395tusharpandey13 wants to merge 2 commits into
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…-server-js Add AUTH_MIGRATION_GUIDE.md covering the surgical migration of the Authentication layer off the auth0 package (AuthenticationClient, UserInfoClient) to @auth0/auth0-auth-js (stateless token grants) and @auth0/auth0-server-js (server-managed sessions). ManagementClient is out of scope and stays on auth0. Link the new guide from the README documentation list. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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This was referenced Aug 27, 2026
Source-verified every API claim against auth0-auth-js and auth0-server-js.
Fix the mismatches found:
- fullResponse: remove the fabricated "token cache is bypassed" behavior.
auth0-auth-js AuthClient has no token cache; grant methods always hit the
endpoint. Token caching lives in auth0-server-js. Only discovery/JWKS is cached.
- getTokenByCode: options are codeVerifier and organization; there is no
expectedState parameter (that is on getTokenByMagicLinkCode). Corrected the
code comment and the state-handling note.
- initiateBackchannelAuthentication: scope goes via authorizationParams.scope,
not a top-level key; loginHint is an object ({ sub }), not a bare string.
- server-js re-exports: it DOES re-export ApiResponse and FullResponseOption
(alongside RequestOptions), not just RequestOptions.
- Custom store base class is AbstractStateStore (the exported name), not
AbstractSessionStore.
- serverClient.revokeRefreshToken also accepts an explicit { token }; noted it
defaults to the session refresh token.
- mfa.* list now includes deleteAuthenticator.
- changePassword accepts email OR username (plus connection), not email alone.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Adds
AUTH_MIGRATION_GUIDE.md, an end-user guide for migrating the Authentication API layer off theauth0package (AuthenticationClient,UserInfoClient) to the current first-party server SDKs:@auth0/auth0-auth-jsfor stateless token grants (the direct successor toAuthenticationClient)@auth0/auth0-server-jsfor server-managed sessions (redirect login, cookies, refresh, logout)The Management API (
ManagementClient) is explicitly out of scope and stays onauth0. The guide is written to sit alongside the existing v5/v6 migration guides and matches their conventions.What the guide covers
>= 1.12.1, and the accurateRequestOptions/fullResponsepost-1.12.1 caveat.AuthClientandServerClient..oauth,.database,.passwordless,.backchannel,.tokenExchange, andUserInfoClient, with before/after code and a quick lookup table.expires_in→expiresAtexpiry bug, and the typed error model withisMfaRequiredError().startInteractiveLogin→completeInteractiveLogin→getUser/getAccessToken→logout), store setup, and non-redirect session logins.Also links the new guide from the README documentation list.
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