InferDIThe only ultra-fast DI for modern TypeScript

Build apps with next-gen DI for any modern runtime with ultra-fast architecture, clean domain logic, and first-class testability.

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Fastify

Fastify is built for speed, the DI layer should stay out of its way. The Fastify v5 adapter plugs into plugins and hooks, creates a typed request scope in onRequest, and cleans it up in onResponse.

Fastify adapter

Hono

Edge apps need thin glue and quick starts. The Hono v4 adapter stores the request scope in context variables, fits Workers and Bun deployments, and keeps strict types at the network boundary.

Hono adapter

Koa

Koa works best when the middleware chain stays small and explicit. The Koa v3 adapter binds request context to your services through a typed scope without hiding the async control flow.

Koa adapter

Express

Express 5 is still the familiar default for many Node apps. This adapter gives those middleware chains a typed request scope, so services stop leaking through globals, hand-rolled factories, and scattered imports.

Express adapter

Elysia

Elysia v1 already gives Bun apps sharp route types. The adapter carries that type chain into your services, wiring each request to a DI scope so autocomplete follows the path from handler to business logic.

Elysia adapter

Framework-agnostic core

InferDI has zero dependencies and runs anywhere — Node, Bun, Deno, browsers, workers. Adapters are optional request-scope glue, never a requirement.

How adapters work