| /** |
| * @license |
| * Copyright Google LLC 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 { Tree } from '@angular-devkit/schematics'; |
| import { DefaultTreeElement } from 'parse5'; |
| /** Appends the given element HTML fragment to the `<head>` element of the specified HTML file. */ |
| export declare function appendHtmlElementToHead(host: Tree, htmlFilePath: string, elementHtml: string): void; |
| /** Parses the given HTML file and returns the head element if available. */ |
| export declare function getHtmlHeadTagElement(htmlContent: string): DefaultTreeElement | null; |
