issue #4 - fix function calls in decorator issue

src/config.module.ts

@@ -1,19 +1,16 @@
-import { Injectable, NgModule, ModuleWithProviders, APP_INITIALIZER, SkipSelf, Optional } from '@angular/core';
+import { NgModule, ModuleWithProviders, APP_INITIALIZER, SkipSelf, Optional } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { HttpClientModule } from '@angular/common/http';
 
 import { ConfigService } from './config.service';
 import { EnvConfig } from './env-config';
 
-let _env: EnvConfig;
 
-export function ConfigFactory(config: ConfigService) {
-    const res = () => config.load(_env);
+export function ConfigFactory(config: ConfigService, env: EnvConfig) {
+    const res = () => config.load(env);
     return res;
 }
 
-
-
 @NgModule({
     imports: [
         CommonModule,
@@ -24,25 +21,27 @@ export function ConfigFactory(config: ConfigService) {
         {
             provide: APP_INITIALIZER,
             useFactory: ConfigFactory,
-            deps: [ConfigService],
+            deps: [ConfigService, EnvConfig],
             multi: true
         }
     ],
     declarations: []
 })
 
 export class ConfigModule {
-    constructor( @Optional() @SkipSelf() parentModule: ConfigModule) {
+    constructor(@Optional() @SkipSelf() parentModule: ConfigModule) {
         if (parentModule) {
             throw new Error(
                 'ConfigModule is already loaded. Import it in the AppModule only');
         }
     }
 
     static forRoot(env: EnvConfig): ModuleWithProviders {
-        _env = env; 
         return {
-            ngModule: ConfigModule
+            ngModule: ConfigModule,
+            providers: [
+                { provide: EnvConfig, useValue: env }
+            ]
         };
     }
 }

src/config.service.ts

@@ -19,7 +19,6 @@ export class ConfigService {
 
     load(env: EnvConfig) {
         return new Promise((resolve, reject) => {
-            console.log(this._env)
             this._env = env.state;
             this._fallbackDev = env.fallbackDev || false;
 

src/env-config.ts

@@ -1,5 +1,5 @@
 
-export interface EnvConfig {
+export class EnvConfig {
     state: string;
     fallbackDev?: boolean;
 }