---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/sandbox/variables/extensionMimeResolver.md
description: 'Resolve a MIME type from a filename, without sniffing bytes.'
---

# Variable: extensionMimeResolver

```ts
const extensionMimeResolver: MimeResolver;
```

Defined in: [src/batteries/sandbox/defaults/extension\_mime.ts:47](https://github.com/NHTIO/ADK/blob/v1.20260824.1/src/src/batteries/sandbox/defaults/extension_mime.ts#L47)

Resolve a MIME type from a filename, without sniffing bytes.