@WDXLab/DI

Dependency Injection for TypeScript

Installation

npm install @wdxlab/di --save

Usage

tsconfig.json

{
  "compilerOptions": {
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  },
}

Simple example:

import {Injector, Injectable} from "@wdxlab/di";

@Injectable()
class Foo {
    sum(a: number, b: number) {
        return a + b;
    }
}

@Injectable()
class Bar {
    constructor(protected foo: Foo) {}

    sum(a: number, b: number) {
        return this.foo.sum(a, b);
    }
}

const injector = new Injector();
const bar = injector.instantiate(Bar);

console.log(bar.sum(1, 2)); // 3

‼️ TODO: describe docs below ‼️

Methods

instantiate(module, description?)

callMethod(target, methodName, description?)

get(clazz)

set(instance)

fn(fn, params)

clear()

Decorators

Injectable(description?)

Class decorator

isInjectable(target)

getInjectableOptions(target)

InjectArg(name)

Parameter decorator

InjectArgFactory(factory)

Parameter decorator

getInjectionParamFactories(target, key?)

Method(meta?)

Method decorator

getMethods(target)