InferDITyped dependency injection for modern TypeScript

Fastify

The Fastify v5 adapter creates a typed request scope in `onRequest` and disposes it in `onResponse`. It works with Fastify plugins and lifecycle hooks.

Fastify adapter

Hono

The Hono v4 adapter stores the request scope in context variables. Use it with Workers and Bun while keeping the scope type at the handler boundary.

Hono adapter

Koa

The Koa v3 adapter binds request context to services through a typed scope and preserves Koa's async middleware flow.

Koa adapter

Express

The Express 5 adapter adds a typed request scope to middleware and routes. Keep service wiring out of globals and ad hoc request factories.

Express adapter

Elysia

The Elysia v1 adapter connects each request to a typed DI scope and carries route types into the service layer.

Elysia adapter

Framework-agnostic core

InferDI has zero runtime dependencies and runs in Node, Bun, Deno, browsers, and workers. Adapters add optional request-scope lifecycle glue.

How adapters work