import type { LiteralUnion } from 'type-fest';
import rightPad from 'lodash/padEnd';
import leftPad from 'lodash/padStart';
import BN from 'bn.js';
export declare const isBase58btc: (data: any) => boolean;
export type BytesType = string | Buffer | Uint8Array;
export type EncodingType = LiteralUnion<'hex' | 'base16' | 'base58' | 'base64' | 'Uint8Array' | 'buffer', string>;
export type KeyPairType = {
    publicKey: BytesType;
    secretKey: BytesType;
};
export { BN, leftPad, rightPad };
/**
 * Returns a BN object, converts a number value to a BN
 * @param {string|number|BN} `arg` input a string number, hex string number, number, BigNumber or BN object
 * @return {BN} `output` BN object of the number
 * @throws if the argument is not an array, object that isn't a bignumber, not a string number or number
 */
export declare const numberToBN: (arg: string | number | BN) => BN;
/**
 * Returns a `boolean` on whether or not the `string` starts with '0x'
 *
 * @public
 * @static
 * @param {String} str the string input value
 * @return {Boolean} a boolean if it is or is not hex prefixed
 * @throws if the str input is not a string
 */
export declare const isHexPrefixed: (str: string) => boolean;
/**
 * Removes '0x' from a given `String` if present
 *
 * @public
 * @static
 */
export declare const stripHexPrefix: (str: string | any) => any;
/**
 * Returns true if object is BN, otherwise false
 *
 * @public
 * @static
 * @method isBN
 * @param {Object} object
 * @returns {Boolean}
 */
export declare const isBN: (object: $TSFixMe) => boolean;
/**
 * Returns true if object is BigNumber, otherwise false
 *
 * @public
 * @static
 * @method isBigNumber
 * @param {Object} object
 * @returns {Boolean}
 */
export declare const isBigNumber: (object: $TSFixMe) => boolean;
/**
 * Check if string is HEX, requires a 0x in front
 *
 * @public
 * @static
 * @method isHexStrict
 * @param {String} hex to be checked
 * @returns {Boolean}
 */
export declare const isHexStrict: (hex: string) => boolean;
/**
 * Check if string is HEX
 *
 * @public
 * @static
 * @method isHex
 * @param {String} hex to be checked
 * @returns {Boolean}
 */
export declare const isHex: (hex: string) => boolean;
/**
 * Takes an input and transforms it into an BN
 *
 * @public
 * @static
 * @method toBN
 * @param {Number|String|BN} num, string, HEX string or BN
 * @returns {BN} BN
 */
export declare const toBN: (num: number | string | BN, base?: number | "hex") => BN;
/**
 * Should be called to get hex representation (prefixed by 0x) of utf8 string
 *
 * @public
 * @static
 * @method utf8ToHex
 * @param {String} str
 * @returns {String} hex representation of input string
 */
export declare const utf8ToHex: (str: string) => string;
/**
 * Should be called to get utf8 from it's hex representation
 *
 * @public
 * @static
 * @method hexToUtf8
 * @param {String} hex
 * @returns {String} ascii string representation of hex value
 */
export declare const hexToUtf8: (hex: string) => string;
/**
 * Converts value to number representation
 *
 * @public
 * @static
 * @method hexToNumber
 * @param {String|Number|BN} value
 * @returns {Number}
 */
export declare const hexToNumber: (value: string | number | BN) => number;
/**
 * Converts value to hex representation
 *
 * @public
 * @static
 * @method numberToHex
 * @param {String|Number|BN} value
 * @returns {String}
 */
export declare const numberToHex: (value: $TSFixMe) => string;
/**
 * Convert a byte array to a hex string
 * Note: Implementation from crypto-js
 *
 * @public
 * @static
 * @method bytesToHex
 * @param {Array} bytes
 * @returns {String} the hex string
 */
export declare const bytesToHex: (bytes: $TSFixMe) => string;
/**
 * Convert a hex string to a byte array
 * Note: Implementation from crypto-js
 *
 * @public
 * @static
 * @method hexToBytes
 * @param {String} hex
 * @returns {Array} the byte array
 */
export declare const hexToBytes: (hex: $TSFixMe) => Array<any>;
/**
 * Auto converts any given value into it's hex representation.
 * And even stringify objects before.
 *
 * @public
 * @static
 * @method toHex
 * @param {String|Number|BN|Object|TypedArray|Buffer} value
 * @param {Boolean} returnType
 * @returns {String}
 */
export declare const toHex: (value: string | number | boolean | BN | Uint8Array | Buffer | (number | {
    test: string;
})[] | {
    test: string;
}, returnType?: boolean) => string;
export declare const numberToString: (arg: $TSFixMe) => any;
/**
 * Format a big number to human readable number, such as 1_0000_0000_0000_000 => 1 Token
 */
export declare const fromUnitToToken: (input: string | number | BN, decimal?: number, optionsInput?: $TSFixMe) => string;
/**
 * Convert human readable token number to big number instance
 */
export declare const fromTokenToUnit: (input: string | number, decimal?: number) => BN;
/**
 * Validates if a value is an Uint8Array.
 */
export declare function isUint8Array(value: $TSFixMe): boolean;
/**
 * Generate a random UUID
 */
export declare function UUID(): string;
/**
 * Check if a string is valid UUID
 */
export declare function isUUID(str: string): boolean;
/**
 * Convert input to Uint8Array on best effort, base64 node supported
 */
export declare function toUint8Array(v: any): Uint8Array;
/**
 * Convert input to Buffer on best effort, base64 not supported
 */
export declare function toBuffer(v: any): Buffer;
/**
 * Convert input to base58btc format on best effort
 */
export declare function toBase58(v: any): string;
/**
 * Decode base58 string
 */
export declare function fromBase58(v: string): Buffer;
/**
 * Convert input to base64 format
 */
export declare function toBase64(v: any, escape?: boolean): string;
/**
 * Decode base64(base64_url) string to buffer
 */
export declare function fromBase64(v: string): Buffer;
/**
 * Convert did to address: remove `did:abt:` prefix
 */
export declare function toAddress(did: string): string;
/**
 * Convert address to did: prepend `did:abt:` prefix
 */
export declare function toDid(address: string): string;
export declare function isSameDid(a: string, b: string): boolean;
export declare function formatTxType(type: string): any;