better code structure in injector/decorator and implemented initialization priorities

test/InitializationTest/ComponentA.ts

@@ -0,0 +1,16 @@
+import { Inject, Singleton } from "../../src/Decorator"
+import { Initializable } from "../../src/Interfaces"
+import { COMPONENT_A_VALUE } from "../CONSTANTS"
+import { TestComponent } from "./TestComponent"
+
+@Singleton({
+    initializationPriority: 3
+})
+export class ComponentA implements Initializable{
+    @Inject(TestComponent)
+    private testComponent: TestComponent
+
+    initialize(): void{
+        this.testComponent.pushData(COMPONENT_A_VALUE)
+    }
+}

test/InitializationTest/ComponentB.ts

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+import { Inject, Singleton } from "../../src/Decorator"
+import { Initializable } from "../../src/Interfaces"
+import { COMPONENT_B_VALUE } from "../CONSTANTS"
+import { TestComponent } from "./TestComponent"
+
+@Singleton({
+    initializationPriority: 2
+})
+export class ComponentB implements Initializable{
+    @Inject(TestComponent)
+    private testComponent: TestComponent
+
+    initialize(): void{
+        this.testComponent.pushData(COMPONENT_B_VALUE)
+    }
+}

test/InitializationTest/ComponentC.ts

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+import { Inject, Singleton } from "../../src/Decorator"
+import { Initializable } from "../../src/Interfaces"
+import { COMPONENT_C_VALUE } from "../CONSTANTS"
+import { TestComponent } from "./TestComponent"
+
+@Singleton({
+    initializationPriority: 1
+})
+export class ComponentC implements Initializable{
+    @Inject(TestComponent)
+    private testComponent: TestComponent
+
+    initialize(): void{
+        this.testComponent.pushData(COMPONENT_C_VALUE)
+    }
+}

test/InitializationTest/Test.ts

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+import { expect } from 'chai';
+import { Injector } from '../../src/Injector'
+import { COMPONENT_A_VALUE, COMPONENT_B_VALUE, COMPONENT_C_VALUE } from '../CONSTANTS';
+import { TestComponent } from './TestComponent'
+
+var chai = require("chai");
+var chaiAsPromised = require("chai-as-promised");
+
+chai.use(chaiAsPromised);
+
+describe('dependjs', () => {
+    it('initialized in the requested order', () => {
+
+        const testComp = Injector.resolve(TestComponent)
+        const data = testComp.getData()
+
+        expect(data).to.eql([COMPONENT_C_VALUE, COMPONENT_B_VALUE, COMPONENT_A_VALUE])
+    })
+})

test/InitializationTest/TestComponent.ts

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+import { Singleton } from "../../src/Decorator";
+
+@Singleton()
+export class TestComponent{
+
+    private data: string[] = []
+
+    pushData(str: string){
+        this.data.push(str)
+    }
+
+    getData(){
+        return this.data
+    }
+
+}