Update index.js

index.js

@@ -84,7 +84,15 @@ app.get('/qrcode', async (req, res) => {
 		} else if (['read', 'scan'].includes(mode)) {
 			// Fetch the image and read the QR code
 			const response = await fetch(url);
-			const buffer = await response.buffer();
+			if (!rts.ok || rts.status !== 200) return res.send({
+				status: 400,
+				message: 'Can\'t buffer url'
+			})
+			if (!/image/.test(rts.headers.get('content-type'))) return res.send({
+				status: 400,
+				message: 'Only image type'
+			})
+			const buffer = Buffer.from(await response.arrayBuffer());
 			const image = await Jimp.read(buffer);
 
 			// Preprocess the image to enhance QR code readability
@@ -246,7 +254,7 @@ async function processScreenshot(req, res, {
 			'Content-Length': screenshot.length,
 		});
 		res.end(screenshot);
-        console.log('process done')
+		console.log('process done');
 		await browser.close();
 	} catch (e) {
 		log(e)