Resolve the preferred file extension for an image mime type.
Image mime type, for example the one parsed from a data URI
The file extension without a leading dot
Error when the mime type has no known image file extension
console.log(imageExtensionForMimeType("image/jpeg")); // "jpg" Copy
console.log(imageExtensionForMimeType("image/jpeg")); // "jpg"
Resolve the preferred file extension for an image mime type.