Function decodeBase64

packages/consortium-cli/src/api/encryption.ts:32–41

(base64: string, variant: 'base64' | 'base64url' = 'base64')

 * Decode a base64 string to a Uint8Array
 */
export function decodeBase64(base64: string, variant: 'base64' | 'base64url' = 'base64'): Uint8Array {
  if (variant === 'base64url') {
    const base64Standard = base64
      .replaceAll('-', '+')
      .replaceAll('_', '/')
      + '='.repeat((4 - base64.length % 4) % 4);
    return new Uint8Array(Buffer.from(base64Standard, 'base64'));
  }
  return new Uint8Array(Buffer.from(base64, 'base64'));
}

/**
 * Generate secure random bytes