/**
 * @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
 */
/**
 * Applies CSS prefixes to appropriate style keys.
 *
 * Note: `-ms-`, `-moz` and `-webkit-box` are no longer supported. e.g.
 *    {
 *      display: -webkit-flex;     NEW - Safari 6.1+. iOS 7.1+, BB10
 *      display: flex;             NEW, Spec - Firefox, Chrome, Opera
 *      // display: -webkit-box;   OLD - iOS 6-, Safari 3.1-6, BB7
 *      // display: -ms-flexbox;   TWEENER - IE 10
 *      // display: -moz-flexbox;  OLD - Firefox
 *    }
 */
export declare function applyCssPrefixes(target: {
    [key: string]: any | null;
}): {
    [key: string]: any;
};