@fastrack/di

Inversify-style dependency injection for Fastrack: constructor injection only, singleton scope by default, explicit bindings via ContainerModule. DI never auto-registers routes; Fastify plugins stay responsible for HTTP boundaries.

See docs/architecture.md.

Install

pnpm add @fastrack/di

Usage

import { createContainer, bind } from "@fastrack/di";
import { MyService } from "./my-service.js";

const container = createContainer();
container.load(
  bind(MyService).toSelf().inSingletonScope()
);

const service = container.get(MyService);

Rules

• Constructor injection only.
• Singleton scope default.
• Explicit bindings via ContainerModule; no auto-registration of routes.