import { EosActionAuthorizationStruct, EosAuthorizationStruct, EosPublicKey, MsigAuthOptions } from '../models';
/** Returns a UNIX timestamp, that is EOS base32 encoded  */
/**  Returns valid EOS base32, which is different than the standard JS base32 implementation */
export declare function eosBase32(base32String: string): string;
export declare function timestampEosBase32(): string;
/** Returns a random string, that is EOS base32 encoded  */
export declare function randomEosBase32(): string;
/**
 * Returns an EosActionAuthorizationStruct if there is only 1 in the array, otherwise returns null
 */
export declare function getFirstAuthorizationIfOnlyOneExists(authorization: EosActionAuthorizationStruct[]): EosActionAuthorizationStruct;
export declare function publicKeyToAuth(publicKey: EosPublicKey): EosAuthorizationStruct;
export declare function msigOptionToAuth(msigOption: MsigAuthOptions): EosAuthorizationStruct;
export declare function isArrayAndNotEmpty(value: any): boolean;