import TransactionType from './types/TransactionType';
/**
 * Turns a string TransactionType into an enum TransactionType.
 *
 * @throws Throws an error if the given transaction type is not valid.
 * @param input - The transaction type.
 *
 * @returns The transaction type as an enum.
 */
export declare function validateTransactionType(input: string): TransactionType;
/**
 * Takes a hex string and decodes it into Ascii.
 *
 * @param input - The hex input.
 * @returns The ascii string.
 */
export declare function hexToAscii(input: string): string;
/**
 * Converts a time into a human readable string.
 * The time is given as the number of seconds after the Ripple epoch.
 *
 * @param time - The number of seconds after the Ripple epoch.
 * @returns The time as a UTC time string.
 */
export declare function parseDate(time: number): string;
/**
 * Turn a number into a rank. E.g.:
 * 1 => 1st
 * 2 => 2nd
 * 3 => 3rd
 * 4 => 4th
 * etc.
 *
 * @param num - The number.
 * @returns Result.
 */
export declare function numberToRankString(num: number): string;
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