Angular 2 Pipes

<!DOCTYPE html>
<html>

  <head>
    <title>angular2 playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://npmcdn.com/zone.js@0.6.12/dist/zone.js"></script>
    <script src="https://npmcdn.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://npmcdn.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="https://npmcdn.com/typescript@1.8.10/lib/typescript.js"></script>
    <script src="config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app>
    loading...
  </my-app>
  </body>

</html>

/* Styles go here */

### Angular2 Starter Plunker - Typescript - RC.0

A simple plunker demonstrating Angular2 usage:
- Uses SystemJS + TypeScript to compile on the fly
- Includes binding, directives, http, pipes, and DI usage.

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  //map tells the System loader where to look for things
  map: {
    app: "./src",
    '@angular': 'https://npmcdn.com/@angular',
    'rxjs': 'https://npmcdn.com/rxjs@5.0.0-beta.6'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    '@angular/core': {
      main: 'bundles/core.umd.js',
      defaultExtension: 'js'
    },
    '@angular/compiler': {
      main: 'bundles/compiler.umd.js',
      defaultExtension: 'js'
    },
    '@angular/common': {
      main: 'bundles/common.umd.js',
      defaultExtension: 'js'
    },
    '@angular/platform-browser-dynamic': {
      main: 'bundles/platform-browser-dynamic.umd.js',
      defaultExtension: 'js'
    },
    '@angular/platform-browser': {
      main: 'bundles/platform-browser.umd.js',
      defaultExtension: 'js'
    },
    '@angular/forms': {
      main: 'index.js',
      defaultExtension: 'js'
    },
    '@angular/router': {
      main: 'index.js',
      defaultExtension: 'js'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

import {Component, NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {OrdinalPipe} from './ordinal.pipe';

@Component({
  selector: 'my-app',
  template: `
    <div>
      <ul>
        <li *ngFor="let num of numbers">
          {{ num }}
        </li>
      </ul>
    </div>
  `,
  providers: [OrdinalPipe]
})
export class App {
  constructor(private pipe: OrdinalPipe) {
    let numbers = [
      1,2,3,4,5,6,7,8,9,10,
      11,12,13,14,15,16,17,18,19,20
    ];
    this.numbers = numbers.map(number => this.pipe.transform(number));
  }
}

@NgModule({
  imports: [ BrowserModule ],
  declarations: [ App, OrdinalPipe ],
  bootstrap: [ App ]
})
export class AppModule {}

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'ordinal'
})
export class OrdinalPipe implements PipeTransform {
  transform(value: number): string {
    let suffix = '';
		let last = value % 10;
		let specialLast = value % 100;
		if (!value || value < 1) {
			return value;
		}
		if (last === 1 && specialLast !== 11) {
			suffix = 'st';
		} else if (last === 2 && specialLast !== 12) {
			suffix = 'nd';
		} else if (last === 3 && specialLast !== 13) {
			suffix = 'rd';
		} else {
			suffix = 'th';
		}
		return value + suffix;
  }
}