Uint8Array to / from base64 and hex

class Uint8Array {
  static fromBase64(string: string, options?: { alphabet?: 'base64' | 'base64url', lastChunkHandling?: 'loose' | 'strict' | 'stop-before-partial' }): Uint8Array;
  static fromHex(string: string): Uint8Array;
  setFromBase64(string: string, options?: { alphabet?: 'base64' | 'base64url', lastChunkHandling?: 'loose' | 'strict' | 'stop-before-partial' }): { read: uint, written: uint };
  setFromHex(string: string): { read: uint, written: uint };
  toBase64(options?: { alphabet?: 'base64' | 'base64url', omitPadding?: boolean }): string;
  toHex(): string;
}

CommonJS entry points

core-js/proposals/array-buffer-base64