feat(serve-static): mimes option for serve-static

src/serve-static.ts

@@ -10,6 +10,7 @@ export type ServeStaticOptions = {
    */
   root?: string
   path?: string
+  mimes?: Record<string, string>
   index?: string // default is 'index.html'
   rewriteRequestPath?: (path: string) => string
   onNotFound?: (path: string, c: Context) => void | Promise<void>
@@ -60,7 +61,12 @@ export const serveStatic = (options: ServeStaticOptions = { root: '' }): Middlew
       return next()
     }
 
-    const mimeType = getMimeType(path)
+    let mimeType: string | undefined = undefined
+    if (options.mimes) {
+      mimeType = getMimeType(path, options.mimes) ?? getMimeType(path)
+    } else {
+      mimeType = getMimeType(path)
+    }
     if (mimeType) {
       c.header('Content-Type', mimeType)
     }

test/serve-static.test.ts

@@ -135,3 +135,30 @@ describe('Serve Static Middleware', () => {
     expect(res.status).toBe(404)
   })
 })
+
+describe('With `mimes` options', () => {
+  const mimes = {
+    m3u8: 'application/vnd.apple.mpegurl',
+    ts: 'video/mp2t',
+  }
+  const app = new Hono()
+  app.use('/static/*', serveStatic({ root: './assets', mimes }))
+
+  const server = createAdaptorServer(app)
+
+  it('Should return content-type of m3u8', async () => {
+    const res = await request(server).get('/static/video/morning-routine.m3u8')
+    expect(res.status).toBe(200)
+    expect(res.headers.get('Content-Type')).toBe('application/vnd.apple.mpegurl')
+  })
+  it('Should return content-type of ts', async () => {
+    const res = await request(server).get('/static/video/morning-routine1.ts1')
+    expect(res.status).toBe(200)
+    expect(res.headers.get('Content-Type')).toBe('video/mp2t')
+  })
+  it('Should return content-type of default on Hono', async () => {
+    const res = await request(server).get('/static/video/introduction.mp4')
+    expect(res.status).toBe(200)
+    expect(res.headers.get('Content-Type')).toBe('video/mp4')
+  })
+})