/**
 * Caches and provides any load results, Loaded either by name from CDN or directly by URL.
 */
export declare class CDNLoader {
    /**
     * Internal response cache
     */
    private responseCache;
    /**
     * CDN prefix to prepend to src
     */
    private cdnPrefix;
    /**
     * @returns {boolean} clarify whether the prefix has been resolved or not.
     */
    get isPrefixResolved(): boolean;
    /**
     * @returns {boolean} clarify whether the prefix is pending or not.
     */
    get isPrefixPending(): boolean;
    /**
     * @returns promise, which will be resolved with CDN prefix, once set.
     */
    getCdnPrefix(): Promise<string>;
    /**
     * Sets CDN prefix to load source.
     * Resolves deferred promise with the provided CDN prefix.
     * If the prefix is falsy, reject instead.
     * @param prefix - CDN prefix.
     * @returns {void}
     */
    setCdnPrefix(prefix: string): void;
    /**
     * Asynchronously tries to load
     * @param href The location of the SVG to load
     * @returns Promise of the SVG body
     */
    private loadContent;
    /**
     * Tries to load an src either by src or by provided URL
     * @param src name or Source location.
     * @returns Promise which will be resolved with response body
     */
    load(src: string): Promise<Response | undefined>;
}