Build an Authorization Server with Bun, Hono, and OpenID Connect

Modern applications increasingly rely on OpenID Connect (OIDC) for secure, standards-based authentication. But most tutorials point you at hosted identity providers. What if you need to run your own authorization server maybe for a microservices platform, an internal tool, or simply to understand how the flow works end to end? In this article we'll build a fully working OIDC Authorization Code Flow server from scratch using: Bun : a fast all-in-one JavaScript runtime Hono : a lightweight, edge-r