InversifyJS VS awilix

One of the most popular libraries in JavaScript for implementing the Inversion of Control (IoC) pattern is InversifyJS. It provides a robust and flexible framework for managing dependencies in a clean, modular way. However, InversifyJS has some drawbacks. One major limitation is the amount of boilerplate code required to set up and manage dependencies. Additionally, it often requires structuring your application in a specific way, which may not suit every project.

Take a class for which we are tasked to write a unit test. This class may have a dozen methods and a dozen more attributes. In my environment we were already using inversify to dependency inject into this class, and using container snapshot and restore as setup and teardown operators, in our jest test file. But it began getting out of control even after refactoring into test cases and test runners.

Inversify (https://inversify.io/) for IoC.

Alguns frameworks trabalham desta forma por padrão, como é o caso do Angular, quando este não é o padrão do framework que utilizamos podemos usar alguma biblioteca, como a Inversify ou tsyringe da Microsoft.

Using decorators required setting an --experimentalDecorators experimental compiler flag. Several popular TypeScript libraries, such as type-graphql and inversify, rely on this implementation.

inversify

It blows 🤯 my mind to think that my #opensource project InversifyJS has reached over 100 MILLION DOWNLOADS on npm. InversifyJS is a lightweight (<50KB) but powerful Inversion Of Control (IoC) container for #JavaScript applications powered by #TypeScript. It is used to implement Dependency Injection (DI) in thousands of applications, including high-profile products like Microsoft Sway and over forty thousand open source repositories on #GitHub and over two thousand open source packages on #npm.

we use https://inversify.io/ in production, it works great.

In next post I will show you how to using with other DI package like awilix , tsyringe, etc...

In real project we have some Dependency Injection library, in my case it is Awilix. Now we need realize integration of repository with out DI solution.

I used awilix in several project, seems good enough for us, no problem so far. https://github.com/jeffijoe/awilix

IoC: (stand for Inversion of Control) is an implementation of the Dependency Injection, the letter D in the SOLID principal. Every time you create a new Service class, or a new repository class, or a new controller, you need to register them in this container. This boilerplate uses Awilix library to achieve the factor.