OAuth 2 / OpenID Connect for JavaScript Runtimes

This software provides a collection of routines that can be used to build client modules for OAuth 2.1, OAuth 2.0 with the latest Security Best Current Practices (BCP), and FAPI 2.0, as well as OpenID Connect where applicable. The primary goal of this software is to promote secure and up-to-date best practices while using only the capabilities common to both browser and non-browser JavaScript runtimes.

Features

The following features are currently in scope and implemented in this software:

Authorization Server Metadata discovery
Authorization Code Flow (profiled under OpenID Connect 1.0, OAuth 2.0, OAuth 2.1, and FAPI 2.0), with PKCE
Refresh Token, Device Authorization, and Client Credentials Grants
Demonstrating Proof-of-Possession at the Application Layer (DPoP)
Token Introspection and Revocation
Pushed Authorization Requests (PAR)
UserInfo and Protected Resource Requests
Authorization Server Issuer Identification
JWT Secured Introspection, Response Mode (JARM), Authorization Request (JAR), and UserInfo
Validating incoming JWT Access Tokens

Certification

Filip Skokan has certified that this software conforms to the Basic, FAPI 1.0, and FAPI 2.0 Relying Party Conformance Profiles of the OpenID Connect™ protocol.

💗 Help the project

Support from the community to continue maintaining and improving this module is welcome. If you find the module useful, please consider supporting the project by becoming a sponsor.

Dependencies: 0

oauth4webapi has no dependencies and it exports tree-shakeable ESM.

API Reference

oauth4webapi is distributed via npmjs.com, jsr.io, deno.land/x, cdnjs.com, jsdelivr.com, and github.com.

Examples

example ESM import

import * as oauth from 'oauth4webapi'

Authorization Code Flow (OAuth 2.0) - source
Authorization Code Flow (OpenID Connect) - source | diff
Extensions
- DPoP - source | diff
- JWT Secured Authorization Request (JAR) - source | diff
- JWT Secured Authorization Response Mode (JARM) - source | diff
- Pushed Authorization Request (PAR) - source | diff
Client Authentication
- Client Secret in HTTP Authorization Header - source
- Client Secret in HTTP Body - source | diff
- Private Key JWT Client Authentication - source | diff
- Public Client - source | diff
Other Grants
- Client Credentials Grant - source
- Device Authorization Grant - source
- Refresh Token Grant - source | diff
FAPI
- FAPI 1.0 Advanced - source | diff
- FAPI 2.0 Security Profile - source | diff
- FAPI 2.0 Message Signing - source | diff

Supported Runtimes

The supported JavaScript runtimes include those that support the utilized Web API globals and standard built-in objects. These are (but are not limited to):

Browsers
Bun
Cloudflare Workers
Deno
Electron
Node.js (runtime flags may be needed)
Vercel's Edge Runtime

Out of scope

The following features are currently out of scope:

CommonJS
Implicit, Hybrid, and Resource Owner Password Credentials Flows
JSON Web Encryption (JWE)
Automatic polyfills of any kind

License

nickcatal/oauth4webapi

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