From 442d79e9ceb09806cba057bcbca654bb28f7c2db Mon Sep 17 00:00:00 2001
From: Dan Percic <dan@devplant.ro>
Date: Thu, 28 Jul 2022 13:46:08 +0300
Subject: [PATCH] add module import checks

---
 src/lib/loading/loading.module.ts              | 8 +++++++-
 src/lib/translations/iqser-translate.module.ts | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/lib/loading/loading.module.ts b/src/lib/loading/loading.module.ts
index e55c2e8..9b19ea4 100644
--- a/src/lib/loading/loading.module.ts
+++ b/src/lib/loading/loading.module.ts
@@ -1,4 +1,4 @@
-import { ModuleWithProviders, NgModule } from '@angular/core';
+import { ModuleWithProviders, NgModule, Optional } from '@angular/core';
 import { FullPageLoadingIndicatorComponent } from './full-page-loading-indicator/full-page-loading-indicator.component';
 import { ProgressLoadingComponent } from './progress-loading/progress-loading.component';
 import { LoadingService } from './loading.service';
@@ -17,6 +17,12 @@ const components = [FullPageLoadingIndicatorComponent, ProgressLoadingComponent,
     imports: [MatProgressSpinnerModule, CommonModule, MatProgressBarModule, MatIconModule, TranslateModule],
 })
 export class IqserLoadingModule {
+    constructor(@Optional() loadingService: LoadingService) {
+        if (!loadingService) {
+            throw new Error('Call forRoot() in AppModule to use IqserLoadingModule');
+        }
+    }
+
     static forRoot(): ModuleWithProviders<IqserLoadingModule> {
         return {
             ngModule: IqserLoadingModule,
diff --git a/src/lib/translations/iqser-translate.module.ts b/src/lib/translations/iqser-translate.module.ts
index c611046..8d9c847 100644
--- a/src/lib/translations/iqser-translate.module.ts
+++ b/src/lib/translations/iqser-translate.module.ts
@@ -1,4 +1,4 @@
-import { ModuleWithProviders, NgModule } from '@angular/core';
+import { Inject, ModuleWithProviders, NgModule, Optional } from '@angular/core';
 import { TranslateCompiler, TranslateLoader, TranslateModule } from '@ngx-translate/core';
 import { TranslateMessageFormatCompiler } from 'ngx-translate-messageformat-compiler';
 import { pruningTranslationLoaderFactory } from './http-loader-factory';
@@ -22,6 +22,12 @@ const translateLoaderToken = 'translateLoader';
     exports: [TranslateModule],
 })
 export class IqserTranslateModule {
+    constructor(@Optional() @Inject(translateLoaderToken) translateLoader: TranslateLoader) {
+        if (!translateLoader) {
+            throw new Error('Call forRoot() in AppModule to use IqserTranslateModule');
+        }
+    }
+
     static forRoot(options?: IqserTranslateModuleOptions): ModuleWithProviders<IqserTranslateModule> {
         return {
             ngModule: IqserTranslateModule,