/**
 * @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
 */
export declare const htmlSelectorRe: RegExp;
export declare function validateHtmlSelector(selector: string): void;
export declare function validateClassName(className: string): void;
