/**
 * The Manifest service class.
 *  (Localized string cannot be used in this class due to initialization phase when the strings are not ready yet.)
 */
export declare class ManifestLoader {
    private static readonly logSourceName;
    private static gatewayUrl;
    private static manifestFile;
    private static deferred;
    private static internalLoaded;
    /**
     * Manifest loading promise.
     */
    get loaded(): Promise<void>;
    /**
     * Load the manifest.
     */
    static loadManifest(): Promise<void>;
    /**
     * Load the manifest into the MsftSme.Environment.
     *
     * @param hostCoreManager the hostCoreManager object to load the manifest.
     * @param manifest the self loading manifest.
     * @return Promise<any> the promise object.
     */
    private static load;
    /**
     * Merges the GatewayUrl manifest with the passed in shell manifest
     * Merges modules only at this time with a preference for modules included in the shell
     */
    private static mergeGatewayManifest;
    /**
     * retrieves all of the side loaded manifests.
     *
     * @return Observable<any[]> the manifests.
     */
    private static fetchSideloadManifests;
    /**
     * Update the environment by the manifest.
     */
    private static update;
}