Jgamer1y•8mo ago

Is there a recommended library to do dependency injection in Deno?

I'm creating a Rest API with the repository and controllers pattern but my code in the main.ts file keeps getting bigger and bigger

// Repositories
const animeFavoritesRepo = new MongoAnimeFavoritesRepository(mongoDatabase);
const animesRepo = new MongoAnimesRepository(mongoDatabase);
const usersRepo = new MongoUsersRepository(mongoDatabase);
// .... more repos

// Routes
// I'm injectin the controllers and repos
const auth = new AuthRoutes(new AuthController(usersRepo), usersRepo).router();
app.use(auth.routes());
app.use(auth.allowedMethods());
// ... more routes

// Repositories
const animeFavoritesRepo = new MongoAnimeFavoritesRepository(mongoDatabase);
const animesRepo = new MongoAnimesRepository(mongoDatabase);
const usersRepo = new MongoUsersRepository(mongoDatabase);
// .... more repos

// Routes
// I'm injectin the controllers and repos
const auth = new AuthRoutes(new AuthController(usersRepo), usersRepo).router();
app.use(auth.routes());
app.use(auth.allowedMethods());
// ... more routes

11 Replies

Antonio Sampaio•8mo ago

Have you tried any packages that are popular in nodejs ecosystem? Maybe inversify, tsyringe

Jgamer1y•8mo ago

I tried with npm:tsyringe and ¡ it works ! Thanks for the response 👍 I will use it in my project

fro.profesional•8mo ago

@Joaquín Buendía do you know if it works on deno deploy? Did you have to do anything to make it work? Also ant specific Deno version?

Jgamer1y•8mo ago

I don't know if it works in deno deploy, my project runs on a docker image I just followed the tsyringe documentation but using the npm: tag

Jgamer1y•8mo ago

https://github.com/microsoft/tsyringe

GitHub

GitHub - microsoft/tsyringe: Lightweight dependency injection conta...

Lightweight dependency injection container for JavaScript/TypeScript - GitHub - microsoft/tsyringe: Lightweight dependency injection container for JavaScript/TypeScript

Jgamer1y•8mo ago

My Deno version: 1.38.5. Docker image: denoland/deno:alpine-1.38.5

fro.profesional•8mo ago

Thanks!

manodhya.o•5mo ago

hey, can i know any 3rd party package that runs on Deno environment that do DI? I tried many packages but didn't work, or giving the error of "InvalidWorkerResponse"

fro.profesional•5mo ago

Yes they work but bundle is needed On deno cli works normally, on deploy bundle is needed

manodhya.o•5mo ago

can i have more context on this as i'm new for DI. i'm using https://deno.land/x/alosaur@v0.9.0/src/injection/README.md?source= and followed everything as they mentioned. but still getting the "InvalidWorkerCreation" error

Sorikairo•5mo ago

You can use Danet and leverage its custom DI system. It even provides a CLI to bundle for Deploy, a guide on how to do so manually, and a github action ready to use.