| /** |
| * @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 |
| */ |
| /** |
| * Patches an elements focus and blur methods to emit events consistently and predictably. |
| * This is necessary, because some browsers, like IE11, will call the focus handlers asynchronously, |
| * while others won't fire them at all if the browser window is not focused. |
| * @docs-private |
| */ |
| export declare function patchElementFocus(element: HTMLElement): void; |
| /** @docs-private */ |
| export declare function triggerFocus(element: HTMLElement): void; |
| /** @docs-private */ |
| export declare function triggerBlur(element: HTMLElement): void; |
