message: docs(aio): fix pipes example e2e spec to work with Angular v4
  There was a breaking change between 4 and 5 for i18n formatting of dates.
  PR Close
diff: 'use strict'; // necessary for es6 output in node
  import { browser, element, by } from 'protractor';
  +const { version: angularVersion } = require('@angular/core/package.json');
  describe('Pipes', function () {
  @@ -28,7 +29,11 @@ describe('Pipes', function () {
  it('should be able to toggle birthday formats', function () {
  let birthDayEle = element(by.css('app-hero-birthday2 > p'));
  + if (angularVersion.indexOf('4.') === 0) { // Breaking change between v4 and v5 (https://github.com/angular/angular/commit/079d884)
  + expect(birthDayEle.getText()).toEqual(`The hero's birthday is 4/15/1988`);
  + } else {
  expect(birthDayEle.getText()).toEqual(`The hero's birthday is 4/15/88`);
  + }
  let buttonEle = element(by.cssContainingText('app-hero-birthday2 > button', 'Toggle Format'));
  expect(buttonEle.isDisplayed()).toBe(true);
  buttonEle.click().then(function() {
  