I am trying to use a custom Pipe to filter a list of items. // pipes/my-filter/my-filter.ts import { Pipe, PipeTransform } from '@angular/core'; @Pipe({ name: 'my-filter', }) export class MyFilter implements PipeTransform { transform(value: string, ...args) { return value; } } I would like to use it in a page Component that display that list. // pages/mymodule-liste/mymodule-liste.html <ion-content> <ion-searchbar placeholder="Find" [(ngModel)]="myInput"> </ion-searchbar> <button ion-item *ngFor="let item of listItem | myFilter: myInput""> </ion-content> I try to import the Pipe to the Component // pages/mymodule-liste/mymodule-liste.ts import { Component } from '@angular/core'; import { IonicPage, NavController, NavParams } from 'ionic-angular'; import { MyFilter } from '../../pipes/my-filter/my-filter'; @IonicPage() @Component({ selector: 'page-mymodule-liste', templateUrl: 'mymodule-liste.html', }) export class MymoduleListePage { listItem: any constructor( public navCtrl: NavController, public navParams: NavParams, public myFilter: MyFilter) { } } But I get this error: Error: Template parse errors: The pipe 'myFilter' could not be found I also try to declare it as providers in mymodule-list.module.ts, or globaly in my app.modules.ts declarations and providers but still doesn't work. I take a look at Angular documentation about Pipe, as well as other stackoverflow answers but can't find a way to make it work. So my question is how to declare/register a custom Pipe in Angular (v4.1.0) / Ionic (v3.3.0) for use in a specific component? Continue reading...