revert: feat(elements): implement @angular/elements #19469 (#20152)

This PR was merged without API docs and general rollout plan.

We can't release this as is in 5.1 without a plan for documentation, cli integration, etc.

packages/elements/src/utils.ts

@@ -1,112 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-import {Type} from '@angular/core';
-
-const elProto = Element.prototype as any;
-const matches = elProto.matches || elProto.matchesSelector || elProto.mozMatchesSelector ||
-    elProto.msMatchesSelector || elProto.oMatchesSelector || elProto.webkitMatchesSelector;
-
-/**
- * Provide methods for scheduling the execution of a callback.
- */
-export const scheduler = {
-  /**
-   * Schedule a callback to be called after some delay.
-   */
-  schedule(cb: () => void, delay: number): () =>
-      void{const id = window.setTimeout(cb, delay); return () => window.clearTimeout(id);},
-
-  /**
-   * Schedule a callback to be called before the next render.
-   * (If `window.requestAnimationFrame()` is not available, use `scheduler.schedule()` instead.)
-   */
-  scheduleBeforeRender(cb: () => void): () => void{
-    // TODO(gkalpak): Implement a better way of accessing `requestAnimationFrame()`
-    //                (e.g. accounting for vendor prefix, SSR-compatibility, etc).
-    if (typeof window.requestAnimationFrame === 'undefined') {
-      return scheduler.schedule(cb, 16);
-    } const id = window.requestAnimationFrame(cb);
-    return () => window.cancelAnimationFrame(id);
-  },
-};
-
-/**
- * Convert a camelCased string to kebab-cased.
- */
-export function camelToKebabCase(input: string): string {
-  return input.replace(/[A-Z]/g, char => `-${char.toLowerCase()}`);
-}
-
-/**
- * Create a `CustomEvent` (even on browsers where `CustomEvent` is not a constructor).
- */
-export function createCustomEvent(doc: Document, name: string, detail: any): CustomEvent {
-  const bubbles = false;
-  const cancelable = false;
-
-  // On IE9-11, `CustomEvent` is not a constructor.
-  if (typeof CustomEvent !== 'function') {
-    const event = doc.createEvent('CustomEvent');
-    event.initCustomEvent(name, bubbles, cancelable, detail);
-    return event;
-  }
-
-  return new CustomEvent(name, {bubbles, cancelable, detail});
-}
-
-/**
- * Return the name of the component or the first line of its stringified version.
- */
-export function getComponentName(component: Type<any>): string {
-  return (component as any).overriddenName || component.name ||
-      component.toString().split('\n', 1)[0];
-}
-
-/**
- * Check whether the input is an `Element`.
- */
-export function isElement(node: Node): node is Element {
-  return node.nodeType === Node.ELEMENT_NODE;
-}
-
-/**
- * Check whether the input is a function.
- */
-export function isFunction(value: any): value is Function {
-  return typeof value === 'function';
-}
-
-/**
- * Convert a kebab-cased string to camelCased.
- */
-export function kebabToCamelCase(input: string): string {
-  return input.replace(/-([a-z\d])/g, (_, char) => char.toUpperCase());
-}
-
-/**
- * Check whether an `Element` matches a CSS selector.
- */
-export function matchesSelector(element: Element, selector: string): boolean {
-  return matches.call(element, selector);
-}
-
-/**
- * Test two values for strict equality, accounting for the fact that `NaN !== NaN`.
- */
-export function strictEquals(value1: any, value2: any): boolean {
-  return value1 === value2 || (value1 !== value1 && value2 !== value2);
-}
-
-/**
- * Throw an error with the specified message.
- * (It provides a centralized place where it is easy to apply some change/behavior to all errors.)
- */
-export function throwError(message: string): void {
-  throw Error(message);
-}