Fix: return JSON response for 404 errors instead of plain text (#1738)

Author: codehassoul

src/app.test.ts

@@ -116,6 +116,10 @@ await test('createApp', async (t) => {
         tc.statusCode,
         `${response.status} !== ${tc.statusCode} ${tc.method} ${tc.url} failed`,
       )
+      if (tc.statusCode === 404) {
+        const body = await response.json()
+        assert.deepEqual(body, { error: 'Not Found' })
+      }
     })
   }
 

src/app.ts

@@ -159,7 +159,7 @@ export function createApp(db: Low<Data>, options: AppOptions = {}) {
   app.use('/:name', (req, res) => {
     const { data } = res.locals
     if (data === undefined) {
-      res.sendStatus(404)
+      res.status(404).json({ error: 'Not Found' })
     } else {
       if (req.method === 'POST') res.status(201)
       res.json(data)