diff --git a/projects/ngx-debounce-click/src/ngx-debounce-click.directive.spec.ts b/projects/ngx-debounce-click/src/ngx-debounce-click.directive.spec.ts
index b7f6abd..ab2efea 100644
--- a/projects/ngx-debounce-click/src/ngx-debounce-click.directive.spec.ts
+++ b/projects/ngx-debounce-click/src/ngx-debounce-click.directive.spec.ts
@@ -38,7 +38,7 @@ describe('NgxDebounceClickDirective', () => {
     button = fixture.nativeElement.querySelector('button');
   }));
 
-  it('should debounce a click event', fakeAsync(done => {
+  it('should debounce a click event', fakeAsync(() => {
     expect(component.count).toBe(0);
     button.click();
     expect(component.count).toBe(0);
diff --git a/projects/ngx-debounce-click/src/ngx-debounce-click.directive.ts b/projects/ngx-debounce-click/src/ngx-debounce-click.directive.ts
index 944ede9..a43fb53 100644
--- a/projects/ngx-debounce-click/src/ngx-debounce-click.directive.ts
+++ b/projects/ngx-debounce-click/src/ngx-debounce-click.directive.ts
@@ -3,13 +3,10 @@ import {
   EventEmitter,
   HostListener,
   Input,
-  Inject,
   OnInit,
   OnDestroy,
-  Output,
-  PLATFORM_ID
+  Output
 } from '@angular/core';
-import { isPlatformBrowser } from '@angular/common';
 import { Subject, Subscription } from 'rxjs';
 import { debounceTime } from 'rxjs/operators';
 
@@ -21,11 +18,6 @@ export class NgxDebounceClickDirective implements OnInit, OnDestroy {
   @Output() readonly debouncedClick = new EventEmitter<MouseEvent>();
   private readonly clicks = new Subject<MouseEvent>();
   private subscription: Subscription;
-  private isBrowser = false;
-
-  constructor(@Inject(PLATFORM_ID) platformId: string) {
-    this.isBrowser = isPlatformBrowser(platformId);
-  }
 
   ngOnInit() {
     this.listenToClicks();
diff --git a/projects/ngx-eq/src/ngx-eq.directive.spec.ts b/projects/ngx-eq/src/ngx-eq.directive.spec.ts
index f6bff1e..acf83b0 100644
--- a/projects/ngx-eq/src/ngx-eq.directive.spec.ts
+++ b/projects/ngx-eq/src/ngx-eq.directive.spec.ts
@@ -17,7 +17,6 @@ import { NgxEqModule } from './ngx-eq.module';
 class TestComponent {}
 
 describe('NgxEqDirective', () => {
-  let component: TestComponent;
   let fixture: ComponentFixture<TestComponent>;
 
   beforeEach(async(() => {
@@ -27,10 +26,9 @@ describe('NgxEqDirective', () => {
     }).compileComponents();
 
     fixture = TestBed.createComponent(TestComponent);
-    component = fixture.componentInstance;
   }));
 
-  it('should apply ngx-eq css class', fakeAsync(done => {
+  it('should apply ngx-eq css class', fakeAsync(() => {
     tick();
     expect(fixture.nativeElement.innerHTML).toContain('ngx-eq');
   }));
diff --git a/projects/ngx-input-star-rating/src/ngx-input-star-rating.component.spec.ts b/projects/ngx-input-star-rating/src/ngx-input-star-rating.component.spec.ts
index 4a6865d..c710b7f 100644
--- a/projects/ngx-input-star-rating/src/ngx-input-star-rating.component.spec.ts
+++ b/projects/ngx-input-star-rating/src/ngx-input-star-rating.component.spec.ts
@@ -21,7 +21,6 @@ class TestComponent {
 describe('NgxInputStarRatingComponent', () => {
   let component: TestComponent;
   let fixture: ComponentFixture<TestComponent>;
-  let switchEl;
 
   beforeEach(async(() => {
     TestBed.configureTestingModule({
@@ -34,7 +33,6 @@ describe('NgxInputStarRatingComponent', () => {
     fixture = TestBed.createComponent(TestComponent);
     component = fixture.componentInstance;
     fixture.detectChanges();
-    switchEl = fixture.nativeElement.querySelector('.input-rating');
   });
 
   it('should create', () => {
diff --git a/projects/ngx-input-switch/src/ngx-input-switch.component.spec.ts b/projects/ngx-input-switch/src/ngx-input-switch.component.spec.ts
index c779c6c..3d11a3a 100644
--- a/projects/ngx-input-switch/src/ngx-input-switch.component.spec.ts
+++ b/projects/ngx-input-switch/src/ngx-input-switch.component.spec.ts
@@ -21,7 +21,6 @@ class TestComponent {
 describe('NgxInputSwitchComponent', () => {
   let component: TestComponent;
   let fixture: ComponentFixture<TestComponent>;
-  let switchEl;
 
   beforeEach(async(() => {
     TestBed.configureTestingModule({
@@ -34,7 +33,6 @@ describe('NgxInputSwitchComponent', () => {
     fixture = TestBed.createComponent(TestComponent);
     component = fixture.componentInstance;
     fixture.detectChanges();
-    switchEl = fixture.nativeElement.querySelector('.switch');
   });
 
   it('should create', () => {
diff --git a/projects/ngx-json-ld/src/ngx-json-ld.component.spec.ts b/projects/ngx-json-ld/src/ngx-json-ld.component.spec.ts
index 544011f..d2f6495 100644
--- a/projects/ngx-json-ld/src/ngx-json-ld.component.spec.ts
+++ b/projects/ngx-json-ld/src/ngx-json-ld.component.spec.ts
@@ -1,7 +1,6 @@
 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { NgxJsonLdComponent } from './ngx-json-ld.component';
-import { SimpleChange } from '@angular/core';
 
 const testSchema = {
   '@context': 'http://schema.org',
diff --git a/projects/ngx-nav-drawer/src/ngx-nav-drawer.component.ts b/projects/ngx-nav-drawer/src/ngx-nav-drawer.component.ts
index e58e7be..f980875 100644
--- a/projects/ngx-nav-drawer/src/ngx-nav-drawer.component.ts
+++ b/projects/ngx-nav-drawer/src/ngx-nav-drawer.component.ts
@@ -52,7 +52,7 @@ export class NgxNavDrawerComponent implements OnChanges, OnDestroy, OnInit {
   ngOnInit() {
     if (isPlatformBrowser(this.platformId)) {
       this.setFixedPosition();
-      this.subscription = fromEvent(window, 'resize').subscribe(event =>
+      this.subscription = fromEvent(window, 'resize').subscribe(() =>
         this.setFixedPosition()
       );
     }
diff --git a/projects/ngx-tabs/src/ngx-tabs.component.ts b/projects/ngx-tabs/src/ngx-tabs.component.ts
index cda869c..8b472dc 100644
--- a/projects/ngx-tabs/src/ngx-tabs.component.ts
+++ b/projects/ngx-tabs/src/ngx-tabs.component.ts
@@ -10,7 +10,6 @@ import {
   ViewEncapsulation,
   ChangeDetectionStrategy
 } from '@angular/core';
-import { tap } from 'rxjs/operators';
 
 @Component({
   selector: 'ngx-tabs',
diff --git a/tsconfig.json b/tsconfig.json
index b9316d9..46c2147 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -10,6 +10,8 @@
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
     "importHelpers": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
     "target": "es2015",
     "typeRoots": [
       "node_modules/@types"