Prettied, Linted and updated angular.json according to the latest schematic of Angular CLI.

Now all that is needed is to make it ready for strict compiling.
Removed eslint-plugin-prettier as it is not recommended and causes errors for both eslint and prettier

Bumped to v8.0.0

overlord/src/app/settings/settings.service.ts

@@ -1,14 +1,11 @@
+import { HttpClient } from '@angular/common/http';
 import { Injectable } from '@angular/core';
 import { Observable } from 'rxjs/internal/Observable';
 import { catchError } from 'rxjs/operators';
-import { HttpClient, HttpHeaders } from '@angular/common/http';
+
 import { ErrorLoggerService } from '../core/error-logger.service';
 import { Product } from '../core/product';
 
-const httpOptions = {
-  headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
-};
-
 const serviceName = 'SettingsService';
 
 @Injectable({ providedIn: 'root' })
@@ -20,7 +17,7 @@ export class SettingsService {
     return <Observable<any>>(
       this.http
         .get<any>(url)
-        .pipe(catchError(this.log.handleError(serviceName, `getLockInformation`)))
+        .pipe(catchError(this.log.handleError(serviceName, 'getLockInformation')))
     );
   }
 
@@ -29,7 +26,7 @@ export class SettingsService {
     return <Observable<any>>(
       this.http
         .post<any>(url, lockInformation)
-        .pipe(catchError(this.log.handleError(serviceName, `setLockInformation`)))
+        .pipe(catchError(this.log.handleError(serviceName, 'setLockInformation')))
     );
   }
 
@@ -38,7 +35,7 @@ export class SettingsService {
     return <Observable<any>>(
       this.http
         .delete<any>(url)
-        .pipe(catchError(this.log.handleError(serviceName, `deleteLockInformation`)))
+        .pipe(catchError(this.log.handleError(serviceName, 'deleteLockInformation')))
     );
   }
 
@@ -49,13 +46,9 @@ export class SettingsService {
     quantity: number,
   ): Observable<boolean> {
     const url = '/api/reset-stock';
-    return <Observable<any>>this.http
-      .post<any>(`${url}/${product.id}`, {
-        stockDate: stockDate,
-        resetDate: resetDate,
-        quantity: quantity,
-      })
-      .pipe(catchError(this.log.handleError(serviceName, `resetStock`)));
+    return this.http
+      .post<any>(`${url}/${product.id}`, { stockDate, resetDate, quantity })
+      .pipe(catchError(this.log.handleError(serviceName, 'resetStock')));
   }
 
   rebaseDatabase(date: string): Observable<boolean> {
@@ -63,21 +56,21 @@ export class SettingsService {
     return <Observable<any>>(
       this.http
         .post<any>(`${url}/${date}`, {})
-        .pipe(catchError(this.log.handleError(serviceName, `rebaseDatabase`)))
+        .pipe(catchError(this.log.handleError(serviceName, 'rebaseDatabase')))
     );
   }
 
   setMaintenance(enable: boolean): Observable<any> {
     const url = '/api/maintenance';
-    return <Observable<any>>this.http
+    return this.http
       .post<any>(url, { enabled: enable })
-      .pipe(catchError(this.log.handleError(serviceName, `setMaintenance`)));
+      .pipe(catchError(this.log.handleError(serviceName, 'setMaintenance')));
   }
 
   getMaintenance(): Observable<any> {
     const url = '/api/maintenance';
     return <Observable<any>>(
-      this.http.get<any>(url).pipe(catchError(this.log.handleError(serviceName, `getMaintenance`)))
+      this.http.get<any>(url).pipe(catchError(this.log.handleError(serviceName, 'getMaintenance')))
     );
   }
 
@@ -86,7 +79,7 @@ export class SettingsService {
     return <Observable<any>>(
       this.http
         .post<any>(url, {})
-        .pipe(catchError(this.log.handleError(serviceName, `checkDatabaseIntegrity`)))
+        .pipe(catchError(this.log.handleError(serviceName, 'checkDatabaseIntegrity')))
     );
   }
 }