feat(useBody): support application/x-www-form-urlencoded

Co-Authored-By florent giraud <hello@florent.dev>

closes #44

src/utils/body.ts

@@ -55,7 +55,15 @@ export async function useBody<T=any> (event: CompatibilityEvent): Promise<T> {
   if (ParsedBodySymbol in event.req) {
     return (event.req as any)[ParsedBodySymbol]
   }
-  const body = await useRawBody(event)
+
+  // TODO: Handle buffer
+  const body = await useRawBody(event) as string
+
+  if (event.req.headers['content-type'] === 'application/x-www-form-urlencoded') {
+    const parsedForm = Object.fromEntries(new URLSearchParams(body))
+    return parsedForm as unknown as T
+  }
+
   const json = destr(body) as T
   (event.req as any)[ParsedBodySymbol] = json
   return json

test/body.test.ts

@@ -28,7 +28,7 @@ describe('', () => {
     })
   })
 
-  describe('useJSON', () => {
+  describe('useBody', () => {
     it('can parse json payload', async () => {
       app.use('/', async (request) => {
         const body = await useBody(request)
@@ -47,5 +47,21 @@ describe('', () => {
 
       expect(result.text).toBe('200')
     })
+
+    it('parse the form encoded into an object', async () => {
+      app.use('/', async (request) => {
+        const body = await useBody(request)
+        expect(body).toMatchObject({
+          field: 'value',
+          another: 'true',
+          number: '20'
+        })
+        return '200'
+      })
+      const result = await request.post('/api/test')
+        .send('field=value&another=true&number=20')
+
+      expect(result.text).toBe('200')
+    })
   })
 })