From 3a265e0f52d9b8368108c3d32946c40b21c0136a Mon Sep 17 00:00:00 2001
From: Liang Jiaqing <l.j.q.light@gmail.com>
Date: Fri, 27 Feb 2026 11:47:06 +0800
Subject: [PATCH] feat: add await detection and friendly prompt (v0.32)

- Detect await usage in sync context
- Auto-wrap with async function
- Return friendly prompt suggesting to avoid await
- Provide alternative solution using global variables
---
 assets/ljq_web_driver.user.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/assets/ljq_web_driver.user.js b/assets/ljq_web_driver.user.js
index c5642c8..4a52c7d 100644
--- a/assets/ljq_web_driver.user.js
+++ b/assets/ljq_web_driver.user.js
@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         ljq_web_driver
 // @namespace    http://tampermonkey.net/
-// @version      0.31
+// @version      0.32
 // @description  Execute JS via ljq_web_driver
 // @require      https://code.jquery.com/jquery-3.6.0.min.js
 // @author       You
@@ -310,6 +310,9 @@
                 } catch (e) {
                     if (isIllegalReturnError(e)) {
                         result = (new Function(jsCode))();
+                    } else if (isAwaitError(e)) {
+                        result = (async function() { return eval(jsCode); })();
+                        result = 'Promise is running, cannot get return value. Suggest avoiding await next time, or use global variables (e.g., window.myVar) to store async results.';
                     } else throw e; 
                 }
             }
@@ -336,6 +339,13 @@
         );
     }
 
+    function isAwaitError(e) {
+        return e instanceof SyntaxError && (
+            /await is only valid in async/i.test(e.message) ||  // Chrome
+            /await.*async/i.test(e.message)                     // Firefox等
+        );
+    }
+
     function connect() {
         ws = new WebSocket(wsUrl);