declare global { interface Uint8Array { toHex(): string; toBase64(options?: { alphabet?: 'base64' | 'base64url'; omitPadding?: boolean }): string; } interface Uint8ArrayConstructor { fromHex(base16: string): Uint8Array; fromBase64( base64: string, options?: { alphabet?: 'base64' | 'base64url'; lastChunkHandling?: 'loose' | 'strict' | 'stop-before-partial'; }, ): Uint8Array; } }