import { Alignment, Page, UserPreferences, RASMeta, RASDoc } from "../index.d";
export declare const USER_PREFERENCE_STORAGE_ID = "RAUserPreferences";
export declare const USER_PREFERENCE_VERSION = "0.1";
/**
 * Return a zipped array of arrays
 * @param {array[]} arrays
 */
export declare function zip(arrays: any): Array<any[]>;
export declare function isIOS(): boolean;
/**
 * Return pages from readalong XML file
 * @param {string} - the path to the readalong file
 */
export declare function parseRAS(path: string): Promise<RASDoc>;
/**
 * Return pages from parsed XML
 * @param {xml} - the parsed XML (could be an element)
 */
export declare function extractPages(xml: Document | Element): Array<Page>;
/**
 *
 * @param {xml} - the parsed XML
 * @returns {RASMeta} - meta key-values
 */
export declare function extractMeta(xml: Document | Element): RASMeta;
/**
 * Extract alignment data from parsed text
 */
export declare function extractAlignment(parsed_text: Array<Page>): Alignment;
/**
 * Sprite class containing the state of our sprites to play and their progress.
 * @param {Object} options Settings to pass into and setup the sound and visuals.
 */
export declare var Sprite: (options: any) => void;
export declare function isFileAvailable(url: any): Promise<unknown>;
export declare const getUserPreferences: () => UserPreferences | null;
export declare const setUserPreferences: (userPref: UserPreferences) => void;
export declare const hasUserPreferences: () => boolean;
export declare const clearUserPreferences: () => void;
export declare const sentenceIsAligned: (sentence: Element) => boolean;