export function bufferToU8a(buffer: Buffer): Uint8Array;
export function ensureByte(num: any): number;
export function ensureBytes(bytes: Uint8Array | Iterable<number>): Uint8Array;
export function ensureUint8Array(bytes: any): Uint8Array;
export function hexToU8a(str: string): Uint8Array;
export function isByte(num: any): boolean;
export function isBytes(bytes: Uint8Array | Iterable<number>): boolean;
export function isHex(value: any): boolean;
export function isHexWithGivenByteSize(value: string, byteSize?: number): boolean;
export function normalizeOrConvertStringToU8a(bytesOrString: Uint8Array | string): Uint8Array;
export function normalizeToHex(data: Uint8Array | string): string;
export function normalizeToU8a(bytes: string | Uint8Array | Array<number>): Uint8Array;
export function randomAsHex(length: number): string;
export function randomAsU8a(length: number): Uint8Array;
export function stringToBuffer(str: string): Buffer;
export function stringToHex(str: string): string;
export function stringToU8a(str: string): Uint8Array;
export function u8aToHex(bytes: Iterable<number>): string;
export function u8aToString(bytes: Iterable<number>): string;
export function u8aToU8a(bytes: Iterable<number>): Uint8Array;
export function valueBytes(value: any): Uint8Array;
export function valueNumberOrBytes(value: any): Uint8Array;