Corrected NativeLibraryWrapperService.

src/app/app.module.ts

@@ -3,7 +3,7 @@ import {NgModule} from '@angular/core';
 import {AppComponent} from './app.component';
 import {ConverterRegistryService} from './converter-registry.service';
 import {InputComponentManagerService} from './input-component-manager.service';
-import {NativeLibraryWrapperService} from './nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from './native-library-wrapper.service';
 import {FormsModule} from '@angular/forms';
 import {VersionComponent} from './version/version.component';
 

src/app/converter-registry.service.ts

@@ -8,7 +8,7 @@ import {HexToDecConverter} from './converter/hextodecconverter';
 import {HTMLEntitiesDecoder} from './converter/htmlentitiesdecoder';
 import {HTMLEntitiesEncoder} from './converter/htmlentitiesencoder';
 import {Injectable} from '@angular/core';
-import {NativeLibraryWrapperService} from './nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from './native-library-wrapper.service';
 import {PunycodeDecoder} from './converter/punycodedecoder';
 import {PunycodeEncoder} from './converter/punycodeencoder';
 import {QuotedPrintableDecoder} from './converter/quotedprintabledecoder';

src/app/converter/punycodedecoder.ts

@@ -1,5 +1,5 @@
 import {Converter} from './converter';
-import {NativeLibraryWrapperService} from '../nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from '../native-library-wrapper.service';
 
 export class PunycodeDecoder implements Converter {
 

src/app/converter/punycodeencoder.ts

@@ -1,5 +1,5 @@
 import {Converter} from './converter';
-import {NativeLibraryWrapperService} from '../nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from '../native-library-wrapper.service';
 
 export class PunycodeEncoder implements Converter {
 

src/app/converter/quotedprintabledecoder.ts

@@ -1,5 +1,5 @@
 import {Converter} from './converter';
-import {NativeLibraryWrapperService} from '../nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from '../native-library-wrapper.service';
 
 export class QuotedPrintableDecoder implements Converter {
 

src/app/converter/quotedprintableencoder.ts

@@ -1,5 +1,5 @@
 import {Converter} from './converter';
-import {NativeLibraryWrapperService} from '../nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from '../native-library-wrapper.service';
 
 export class QuotedPrintableEncoder implements Converter {
 

src/app/converter/utf8decoder.ts

@@ -1,5 +1,5 @@
 import {Converter} from './converter';
-import {NativeLibraryWrapperService} from '../nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from '../native-library-wrapper.service';
 
 export class UTF8Decoder implements Converter {
 

src/app/converter/utf8encoder.ts

@@ -1,5 +1,5 @@
 import {Converter} from './converter';
-import {NativeLibraryWrapperService} from '../nativelibrarywrapper.service';
+import {NativeLibraryWrapperService} from '../native-library-wrapper.service';
 
 export class UTF8Encoder implements Converter {
 

src/app/native-library-wrapper.service.spec.ts

@@ -0,0 +1,15 @@
+import { TestBed, inject } from '@angular/core/testing';
+
+import { NativeLibraryWrapperService } from './native-library-wrapper.service';
+
+describe('NativeLibraryWrapperService', () => {
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [NativeLibraryWrapperService]
+    });
+  });
+
+  it('should be created', inject([NativeLibraryWrapperService], (service: NativeLibraryWrapperService) => {
+    expect(service).toBeTruthy();
+  }));
+});

src/app/native-library-wrapper.service.ts

@@ -1,12 +1,11 @@
 import {Injectable} from '@angular/core';
-import {Punycode} from './punycode';
-import {Utf8} from './utf8';
-import {QuotedPrintable} from './quotedprintable';
-import * as NativeUtf8 from 'utf8';
-import * as NativeQuotedPrintable from 'quoted-printable';
 import * as NativePunycode from 'punycode';
+import * as NativeQuotedPrintable from 'quoted-printable';
+import * as NativeUtf8 from 'utf8';
 
-@Injectable()
+@Injectable({
+  providedIn: 'root'
+})
 export class NativeLibraryWrapperService {
   public utf8: Utf8;
   public quotedPrintable: QuotedPrintable;
@@ -18,3 +17,21 @@ export class NativeLibraryWrapperService {
     this.punycode = NativePunycode;
   }
 }
+
+interface Punycode {
+  encode(input: string): string;
+
+  decode(input: string): string;
+}
+
+interface QuotedPrintable {
+  encode(input: string): string;
+
+  decode(input: string): string;
+}
+
+interface Utf8 {
+  encode(input: any): string;
+
+  decode(input: string): any;
+}

src/app/punycode.ts

@@ -1,4 +0,0 @@
-export interface Punycode {
-  encode(input: string): string;
-  decode(input: string): string;
-}

src/app/quotedprintable.ts

@@ -1,4 +0,0 @@
-export interface QuotedPrintable {
-  encode(input: string): string;
-  decode(input: string): string;
-}

src/app/utf8.ts

@@ -1,4 +0,0 @@
-export interface Utf8 {
-  encode(input: any): string;
-  decode(input: string): any;
-}