diff --git a/angular/test/test-app/e2e/src/slides.e2e-spec.ts b/angular/test/test-app/e2e/src/slides.e2e-spec.ts
new file mode 100644
index 0000000000..fc08ba7032
--- /dev/null
+++ b/angular/test/test-app/e2e/src/slides.e2e-spec.ts
@@ -0,0 +1,35 @@
+import { browser, element, by } from 'protractor';
+import { handleErrorMessages, waitTime } from './utils';
+
+describe('slides', () => {
+
+  beforeEach(async () => {
+    await browser.get('/slides');
+  });
+  afterEach(() => {
+    handleErrorMessages();
+  });
+
+  it('should change index on slide change', async () => {
+    expect(await element(by.css('#slide-index')).getText()).toEqual('0');
+    await nextSlide();
+
+    expect(await element(by.css('#slide-index')).getText()).toEqual('1');
+    await nextSlide();
+
+    expect(await element(by.css('#slide-index')).getText()).toEqual('2');
+    await prevSlide();
+
+    expect(await element(by.css('#slide-index')).getText()).toEqual('1');
+  });
+});
+
+async function nextSlide() {
+  await element(by.css('#btn-next')).click();
+  await waitTime(800);
+}
+
+async function prevSlide() {
+  await element(by.css('#btn-prev')).click();
+  await waitTime(800);
+}
\ No newline at end of file
diff --git a/angular/test/test-app/src/app/app-routing.module.ts b/angular/test/test-app/src/app/app-routing.module.ts
index e55c2ff9bd..3e52216f66 100644
--- a/angular/test/test-app/src/app/app-routing.module.ts
+++ b/angular/test/test-app/src/app/app-routing.module.ts
@@ -16,6 +16,7 @@ import { NestedOutletPageComponent } from './nested-outlet-page/nested-outlet-pa
 import { NestedOutletPage2Component } from './nested-outlet-page2/nested-outlet-page2.component';
 import { ViewChildComponent } from './view-child/view-child.component';
 import { ProvidersComponent } from './providers/providers.component';
+import { SlidesComponent } from './slides/slides.component';
 
 const routes: Routes = [
   { path: '', component: HomePageComponent },
@@ -25,6 +26,7 @@ const routes: Routes = [
   { path: 'providers', component: ProvidersComponent },
   { path: 'router-link', component: RouterLinkComponent },
   { path: 'router-link-page', component: RouterLinkPageComponent },
+  { path: 'slides', component: SlidesComponent },
   { path: 'virtual-scroll', component: VirtualScrollComponent },
   { path: 'virtual-scroll-detail/:itemId', component: VirtualScrollDetailComponent },
   { path: 'tabs', redirectTo: '/tabs/account', pathMatch: 'full' },
diff --git a/angular/test/test-app/src/app/app.module.ts b/angular/test/test-app/src/app/app.module.ts
index 94c7723f92..d831ecc8e6 100644
--- a/angular/test/test-app/src/app/app.module.ts
+++ b/angular/test/test-app/src/app/app.module.ts
@@ -24,6 +24,7 @@ import { NestedOutletPage2Component } from './nested-outlet-page2/nested-outlet-
 import { NavComponent } from './nav/nav.component';
 import { ViewChildComponent } from './view-child/view-child.component';
 import { ProvidersComponent } from './providers/providers.component';
+import { SlidesComponent } from './slides/slides.component';
 
 @NgModule({
   declarations: [
@@ -46,7 +47,8 @@ import { ProvidersComponent } from './providers/providers.component';
     NestedOutletPage2Component,
     NavComponent,
     ViewChildComponent,
-    ProvidersComponent
+    ProvidersComponent,
+    SlidesComponent
   ],
   imports: [
     BrowserModule,
diff --git a/angular/test/test-app/src/app/slides/slides.component.html b/angular/test/test-app/src/app/slides/slides.component.html
new file mode 100644
index 0000000000..9c57909951
--- /dev/null
+++ b/angular/test/test-app/src/app/slides/slides.component.html
@@ -0,0 +1,34 @@
+<ion-header>
+  <ion-toolbar>
+    <ion-title>
+      Slides Test
+    </ion-title>
+  </ion-toolbar>
+</ion-header>
+<ion-content>
+  <ion-slides pager="true" (ionSlideDidChange)="checkIndex()">
+
+    <ion-slide>
+      <h1>Slide 1</h1>
+    </ion-slide>
+
+    <ion-slide>
+      <h1>Slide 2</h1>
+    </ion-slide>
+
+    <ion-slide>
+      <h1>Slide 3</h1>
+    </ion-slide>
+  </ion-slides>
+
+  <p>
+    index: <span id="slide-index">{{slideIndex}}</span>
+  </p>
+
+  <ion-button id="btn-prev" (click)="prevSlide()">
+    Prev Slide
+  </ion-button>
+  <ion-button id="btn-next" (click)="nextSlide()">
+    Next Slide
+  </ion-button>
+</ion-content>
\ No newline at end of file
diff --git a/angular/test/test-app/src/app/slides/slides.component.ts b/angular/test/test-app/src/app/slides/slides.component.ts
new file mode 100644
index 0000000000..f389c2ba36
--- /dev/null
+++ b/angular/test/test-app/src/app/slides/slides.component.ts
@@ -0,0 +1,30 @@
+import { Component, OnInit, ViewChild } from '@angular/core';
+import { IonSlides } from '@ionic/angular';
+
+@Component({
+  selector: 'app-slides',
+  templateUrl: './slides.component.html',
+})
+export class SlidesComponent implements OnInit {
+  @ViewChild(IonSlides) slides: IonSlides;
+
+  slideIndex = 0;
+
+  constructor() { }
+
+  ngOnInit() {
+  }
+
+  prevSlide() {
+    this.slides.slidePrev();
+  }
+
+  nextSlide() {
+    this.slides.slideNext();
+  }
+
+  async checkIndex() {
+    this.slideIndex = await this.slides.getActiveIndex();
+  }
+
+}
diff --git a/core/package.json b/core/package.json
index cc46e84da6..1babfb072d 100644
--- a/core/package.json
+++ b/core/package.json
@@ -21,7 +21,6 @@
   "es2015": "dist/esm/es2017/index.js",
   "es2017": "dist/esm/es2017/index.js",
   "jsnext:main": "dist/esm/es2017/index.js",
-  "sideEffects": false,
   "types": "dist/types/interface.d.ts",
   "collection": "dist/collection/collection-manifest.json",
   "webComponents": "dist/web-components.json",