import { Session } from '../client';
import { Hosts } from './../../config';
/**
 * Resolve cdn url based on handle type
 *
 * @private
 * @param session session object
 * @param handle file handle (hash, src://alias, url)
 */
export declare const resolveCdnUrl: (session: Session, handle: string) => string;
/**
 * Resolve all urls with provided cnames
 *
 * @private
 * @param urls
 * @param cname
 */
export declare const resolveHost: (urls: Hosts, cname: string) => Hosts;
/**
 * Removes empty options from object
 *
 * @private
 * @param obj
 */
export declare const removeEmpty: (obj: any) => any;
export declare const uniqueTime: () => any;
/**
 * Generates random string with provided length
 *
 * @param len
 */
export declare const uniqueId: (len?: number) => string;
/**
 * Check if input is a svg
 *
 * @param {Uint8Array | Buffer} file
 * @returns {string} - mimetype
 */
export declare const getMimetype: (file: Uint8Array | Buffer, name?: string) => Promise<string>;
/**
 * Change extension to according mimetype using ext=>mimetype map
 *
 * @param ext - string
 * @return string|boolean
 */
export declare const extensionToMime: (ext: string) => string;
/**
 * Sanitizer Options
 */
export type SanitizeOptions = boolean | {
    exclude?: string[];
    replacement?: string;
};
/**
 * Sanitize file name
 *
 * @param name
 * @param {bool} options  - enable,disable sanitizer, default enabled
 * @param {string} options.replacement - replacement for sanitized chars defaults to "-"
 * @param {string[]} options.exclude - array with excluded chars default - `['\', '{', '}','|', '%', '`', '"', "'", '~', '[', ']', '#', '|', '^', '<', '>']`
 */
export declare const sanitizeName: (name: string, options?: SanitizeOptions) => string;
/**
 * Filter object to given fields
 *
 * @param toFilter
 * @param requiredFields
 */
export declare const filterObject: (toFilter: any, requiredFields: string[]) => any;
/**
 * Deep cleanup object from functions
 *
 * @param obj
 */
export declare const cleanUpCallbacks: (obj: any) => any;
export * from './index.node';