From ddeacebd7b24f9b88a618bb9f315cb1fd589039f Mon Sep 17 00:00:00 2001
From: mgechev <mgechev@gmail.com>
Date: Wed, 26 Aug 2020 21:22:40 +0300
Subject: [PATCH] feat(devtools): add a demo pipe with ngOnDestroy

---
 src/app/demo-app/todo/home/home.module.ts         |  3 ++-
 src/app/demo-app/todo/home/sample.pipe.ts         | 15 +++++++++++++++
 .../demo-app/todo/home/todos/todos.component.html |  2 ++
 3 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 src/app/demo-app/todo/home/sample.pipe.ts

diff --git a/src/app/demo-app/todo/home/home.module.ts b/src/app/demo-app/todo/home/home.module.ts
index b70dd24e5aa..e9080ffb6ac 100644
--- a/src/app/demo-app/todo/home/home.module.ts
+++ b/src/app/demo-app/todo/home/home.module.ts
@@ -5,6 +5,7 @@ import { TodoComponent } from './todos/todo/todo.component';
 import { TodosFilter } from './todos/todos.pipe';
 import { TooltipDirective } from './todos/todo/tooltip.directive';
 import { CommonModule } from '@angular/common';
+import { SamplePipe } from './sample.pipe';
 
 @NgModule({
   imports: [
@@ -17,7 +18,7 @@ import { CommonModule } from '@angular/common';
       },
     ]),
   ],
-  declarations: [TodosComponent, TodoComponent, TodosFilter, TooltipDirective],
+  declarations: [SamplePipe, TodosComponent, TodoComponent, TodosFilter, TooltipDirective],
   exports: [TodosComponent],
 })
 export class HomeModule {}
diff --git a/src/app/demo-app/todo/home/sample.pipe.ts b/src/app/demo-app/todo/home/sample.pipe.ts
new file mode 100644
index 00000000000..6bfa29f37c6
--- /dev/null
+++ b/src/app/demo-app/todo/home/sample.pipe.ts
@@ -0,0 +1,15 @@
+import { Pipe, OnDestroy, PipeTransform } from '@angular/core';
+
+@Pipe({
+  name: 'sample',
+  pure: false,
+})
+export class SamplePipe implements PipeTransform, OnDestroy {
+  transform(val: any): void {
+    return val;
+  }
+
+  ngOnDestroy(): void {
+    console.log('Destroying');
+  }
+}
diff --git a/src/app/demo-app/todo/home/todos/todos.component.html b/src/app/demo-app/todo/home/todos/todos.component.html
index cc6010f617e..8ef36df8c35 100644
--- a/src/app/demo-app/todo/home/todos/todos.component.html
+++ b/src/app/demo-app/todo/home/todos/todos.component.html
@@ -2,6 +2,8 @@
 <a [routerLink]="">Home</a>
 <a [routerLink]="">Home</a>
 
+<p>{{ 'Sample text processed by a pipe' | sample }}</p>
+
 <section class="todoapp">
   <header class="header">
     <h1>todos</h1>