Redirect to target's location

src/app.service.ts

@@ -1,3 +1,20 @@
-export const getLocationOfTarget = (target: string) => {
-    return `Location of ${target}`;
+import axios from 'axios';
+
+const fetchTarget = async (target: string) => {
+    return await axios.get(target, {
+        maxRedirects: 0,
+        validateStatus: (status) => {
+            return status >= 300 && status < 400;
+        },
+    });
+};
+
+export const getLocationOfTarget = async (target: string) => {
+    try {
+        const { headers } = await fetchTarget(target);
+        return headers.location as string;
+    }
+    catch (err) {
+        return undefined;
+    }
 };

src/app.ts

@@ -3,11 +3,16 @@ import { getLocationOfTarget } from './app.service';
 
 let app = express();
 
-app.get('/*', (req, res) => {
+app.get('/*', async (req, res) => {
     const target = req.url.slice(1);
 
-    const location = getLocationOfTarget(target);
-    res.send(location);
+    const location = await getLocationOfTarget(target);
+    if (location) {
+        res.redirect(location);
+    }
+    else {
+        res.sendStatus(404);
+    }
 });
 
 app.listen(3000, () => {