Function parseDataUri

parseDataUri(
dataUri: string,
): { bytes: Uint8Array; isBase64: boolean; mimeType: string }
Parses a Data URI into decoded bytes plus MIME metadata.

Supports both base64 and URL-encoded payload variants.
Parameters
- dataUri: string
  Data URI input.
Returns { bytes: Uint8Array; isBase64: boolean; mimeType: string }
Decoded bytes, MIME type, and original encoding flag.

Throws
When the Data URI is malformed
- Defined in src/core/utils/SharedUtils.ts:183