import "es6-promise/auto";
import "unfetch/polyfill";
/**
 * Main loader class.
 *
 * @export
 * @class Loader
 */
export declare class Loader {
    /**
     * Run the loader.
     *
     * Loads polyfill if needed and bundle.
     *
     * @param {boolean} [autorun=false]
     * @return {Promise<void>}
     * @memberof Loader
     */
    run(autorun?: boolean): Promise<void>;
    /**
     * Script loading.
     *
     * @private
     * @param {string} cacheKey LocalStorage key to save script in.
     * @param {string} scriptUrl Script's URL.
     * @param {string} versionUrl Version's URL.
     * @memberof Loader
     */
    private load;
    /**
     * Update script using url;
     *
     * @private
     * @param {string} scriptUrl Script's url.
     * @param {string} cacheKey Local Storage key to store the script in.
     * @param {number} version Script version.
     * @memberof Loader
     */
    private updateScript;
    /**
     * Append script to document body.
     *
     * @private
     * @param {string} scriptAsText Script as text.
     * @param {string} name Goes in data-biggy-script attribute.
     * @memberof Loader
     */
    private appendScript;
}