import { LocalizationManager } from './localization-manager';
/**
 * Class for asset manager
 */
export declare class AssetManager {
    private localizationManager;
    private _cssV2?;
    private _reactExtension?;
    /**
     * Getter for cssV2.
     */
    get cssV2(): boolean;
    /**
     * Getter for if the target is React.
     */
    get reactExtension(): boolean;
    private readonly fontsKeyword;
    constructor(localizationManager: LocalizationManager<void>, _cssV2?: boolean, _reactExtension?: boolean);
    setTheme(theme: string): void;
    /**
     * Injects dynamic assets (css, js, etc..) from the shell
     * This is only meant to be called once during an extensions lifecycle (during init)
     * @param theme the current theme name
     * @param assets the assets to process
     */
    loadAssets(theme: string, assets: MsftSme.MsftSmeAssets): void;
    protected appendAssets(cssAssets: string[]): void;
    /**
     * Only push the fonts and let the extension use cssV2.
     * @param cssAssets the input cssV1 assets.
     * @returns the cssAssetsV2 including fonts.css only.
     */
    private updateCssV2Assets;
}