filter-selectors

1. npm install filter-selectors

2. npm install @angular/material

3. npm install @angular/cdk

4. in "app.modules.ts":

   	import { FilterSelectorsModule } from 'filter-selectors'
   
   	@NgModule({
   	.
   	.
   	imports:[
   		.
   		FilterSelectorsModule,
   		.
   	],
   	exports:[
   		.
   		FilterSelectorsModule,
   		.
   	]

5. in "styles.css" add:

   	@import '~@angular/material/prebuilt-themes/indigo-pink.css';

6. in "index.html" add:

   	<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">