Create server.js

server.js

@@ -0,0 +1,22 @@
+import express from 'express';
+import { render } from '@antv/gpt-vis-ssr';
+
+const app = express();
+app.use(express.json());
+
+app.post('/api/chart', async (req, res) => {
+  try {
+    const options = req.body; // chart options (type, data, etc.)
+    const vis = await render(options);
+    const buffer = vis.toBuffer();
+    res.setHeader('Content-Type', 'image/png');
+    res.send(buffer);
+  } catch (err) {
+    res.status(400).json({ error: err.message });
+  }
+});
+
+const port = process.env.PORT || 7860;
+app.listen(port, () => {
+  console.log('API running on port ' + port);
+});