Test cases and minor function fixes

src/mime/index.test.ts

@@ -0,0 +1,25 @@
+import { describe, it, expect } from 'vitest'
+import { getExtFromMime, getExtFromFilename, getMimeFromExt, isValidExtForMime, getAllExtensionsForMime } from './index'
+
+describe('MIME functions', () => {
+  it('should get the correct extension from MIME type', () => {
+    expect(getExtFromMime('image/jpeg')).toBe('jpg')
+  })
+
+  it('should get the correct extension from filename', () => {
+    expect(getExtFromFilename('example.txt')).toBe('txt')
+  })
+
+  it('should get the correct MIME type from extension', () => {
+    expect(getMimeFromExt('txt')).toBe('text/plain')
+  })
+
+  it('should validate if extension is valid for MIME type', () => {
+    expect(isValidExtForMime('image/jpeg', 'jpg')).toBe(true)
+    expect(isValidExtForMime('image/jpeg', 'png')).toBe(false)
+  })
+
+  it('should get all valid extensions for a MIME type', () => {
+    expect(getAllExtensionsForMime('image/jpeg')).toEqual(['jpg', 'jpe', 'jpeg','jfif'])
+  })
+})

src/mime/mime.ts

@@ -7410,7 +7410,7 @@ export const MimeTypeList :MimeTypes = {
   'image/jpeg': {
     source: 'iana',
     compressible: false,
-    extensions: ['jpeg', 'jpg', 'jpe', 'jfif'],
+    extensions: [ 'jpg', 'jpe', 'jpeg','jfif'],
   },
   'image/jph': {
     source: 'iana',