type Uint8ArrayWithToHex = Uint8Array & {
  toHex?: () => string;
};

const uint8ArrayPrototype = Uint8Array.prototype as Uint8ArrayWithToHex;

if (typeof uint8ArrayPrototype.toHex !== 'function') {
  Object.defineProperty(Uint8Array.prototype, 'toHex', {
    value: function toHex(this: Uint8Array): string {
      const hex = new Array<string>(this.length);

      for (let index = 0; index < this.length; index += 1) {
        const value = this[index].toString(16);
        hex[index] = value.length === 1 ? `0${value}` : value;
      }

      return hex.join('');
    },
    writable: true,
    configurable: true,
  });
}