/**
  * Extracted from https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.uint8-array.to-hex.js
  * FIXME we don't need this soon after `UInt8Array.prototype.toHex` is
  * implemented. See https://github.com/tc39/proposal-arraybuffer-base64
  */
export declare function uint8ArrayToHex(arr: Uint8Array): string;
/**
  * Extracted from https://github.com/zloirock/core-js/blob/master/packages/core-js/internals/uint8-from-hex.js
  * FIXME we don't need this soon after `UInt8Array.prototype.fromHex` is
  * implemented. See https://github.com/tc39/proposal-arraybuffer-base64
  */
export declare function hexToUint8Array(string: string, into?: any): Uint8Array;
