grumpydi v1.0.0

GrumpyDI

A simple DI container.

Installation

npm i grumpydi --save

Import

import GrumpyDI from "grumpydi";

How to us

First of all you need to create new container and define object with your objects in it.

import GrumpyDI from "grumpydi";

GrumpyDI({ Example1, Example2 });

DI container pass itself in constructor of all objects, so you can easily destructure it.

Let's implement Example1 and Example2

class Example1 {
    onInit ({ Example2 }) {
        console.log(Example2.number * 2);
    }
}

class Example2 {
    constructor (di, number, secondNumber) {
        this.number = number;
        this.secondNumber = secondNumber;
    }
}

As you can see we have in Example1 method onInit. This method will be called when all objects have been registered into DI. Like in constructor, to onInit method is passed DI container.

On top of that we need to pass parameters to constructor in Example2, so let's change our object a little bit.

import GrumpyDI from "grumpydi";

class Example1 {
    onInit ({ Example2 }) {
        console.log((Example2.number + Example2.secondNumber) * 2);
    }
}

class Example2 {
    constructor (di, number, secondNumber) {
        this.number = number;
        this.secondNumber = secondNumber;
    }
}

GrumpyDI({
    Example1,
    Example2: [Example2, 2, 1]
});

You can add additional object through registerObject function.

const di = GrumpyDI({ 
    Example1,
    Example2: [Example2, 2, 1]
});

di.registerObject({
    test: function() {}
});