ionic-framework/tooling/generators/pipe/pipe.tmpl.js

The ionic-framework package comes with both Javascript and Sass frontend dependencies, located in the root of the package, and a Node API, located in `tooling/`.

import {Injectable, Pipe} from 'angular2/angular2';

@Pipe({
  name: '<%= fileName %>'
})
@Injectable()
class <%= jsClassName %> {
  transform(v, args) { 
    return v.toLowerCase(); 
  }
}