refactor(components): convert components to separate modules

src/components/virtual-scroll/virtual-scroll.module.ts

@@ -0,0 +1,28 @@
+import { NgModule, ModuleWithProviders } from '@angular/core';
+
+import { VirtualFooter } from './virtual-footer';
+import { VirtualHeader } from './virtual-header';
+import { VirtualItem } from './virtual-item';
+import { VirtualScroll } from './virtual-scroll';
+
+@NgModule({
+  declarations: [
+    VirtualFooter,
+    VirtualHeader,
+    VirtualItem,
+    VirtualScroll
+  ],
+  exports: [
+    VirtualFooter,
+    VirtualHeader,
+    VirtualItem,
+    VirtualScroll
+  ]
+})
+export class VirtualScrollModule {
+  public static forRoot(): ModuleWithProviders {
+    return {
+      ngModule: VirtualScrollModule, providers: []
+    };
+  }
+}