Cool Dependency Injection
A lightweight, powerful and very easy to use dependency injection framework.
Support singleton, prototype and custom scopes, configuration injection and handling of
multiple instances of modules.
npm install --save cdiand code:
let path = require('path');
let CDI = require('cdi');
let cdi = new cdi({
moduleSrc: [path.join(__dirname, 'src')]
});
let myMainModule = cdi.getInstance('MainModule');
myMainModule.nowDoMyStuff();
// as i promised, simple as hell :Dsrc/wheels.js:
class Wheels {
constructor(size) {
this.size = size;
}
}
module.exports = Wheels;
module.exports.inject = ['config:bike:wheels.size'];src/bike.js:
class Bike {
constructor(wheels) {
this.wheels = wheels;
}
}
module.exports = Bike;
module.exports.inject = ['Wheels'];main.js:
const path = require('path');
const CDI = require('cdi');
const bikeConfig = {
wheels: {
size: 26
}
};
let cdi = new CDI({
moduleSrc: [path.join(__dirname, 'src')],
cacheFile: path.join(__dirname, 'cache', 'cdi.json'),
configurations: {
bike: bikeConfig
}
});
let myBike = cdi.getInstance('Bike');
// now you got your bike with injected wheels, which got the size information injectedready for more?
src/speed.js:
class Speed {
constructor() {
this.speed = 0;
}
setSpeed(speed) {
this.speed = speed;
}
}
module.exports = Speed;src/wheel.js:
class Wheel {
constructor(size, speed) {
this.size = size;
this.position = module.exports.tree;
this.speed = speed;
}
}
module.exports = Wheel;
module.exports.inject = ['config:bike:wheels.size', 'Speed:root'];src/bike.js:
class Bike {
constructor(frontWheel, backWheel) {
this.wheels = {frontWheel, backWheel};
}
}
module.exports = Bike;
module.exports.inject = ['Wheel:front', 'Wheel:back'];main.js:
const path = require('path');
const CDI = require('cdi');
const bikeConfig = {
wheels: {
size: 26
}
};
let cdi = new CDI({
moduleSrc: [path.join(__dirname, 'src')],
cacheFile: path.join(__dirname, 'cache', 'cdi.json'),
configurations: {
bike: bikeConfig
}
});
let myBike = cdi.getInstance('Bike');
// now you got your bike with two injected wheels, which got the size information injected
// and share one common speed instanceI don't want to just copy paste documentation. So best head over to https://f3lang.github.io/cdi
You want to make the world a better place and want to start with this module? awesome :D
Please read the contribution guidelines to get started and i'm looking forward to new stuff.