/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
declare function getHead(document: Document): HTMLHeadElement;
declare function injectCss(document: Document, css: string): number;
declare function removeCss(document: Document, ref: number): void;
declare function applyStyles(element: HTMLElement, styles: Partial<CSSStyleDeclaration>): void;
export { getHead, injectCss, removeCss, applyStyles };