feat: add pool size env

index.ts

@@ -65,7 +65,7 @@ router.get('/ask/stream', async (ctx) => {
 app.use(router.routes());
 
 (async () => {
-    await freeBrowserPool.init(5, process.env.DEBUG === '1');
+    await freeBrowserPool.init(process.env.POOL_SIZE || 2, process.env.DEBUG === '1');
     const server = app.listen(3000, () => {
         console.log("Now listening: 127.0.0.1:3000");
     });