Update gm_api.ts

Author: cyfung1031

src/app/service/content/gm_api/gm_api.ts

@@ -1386,18 +1386,18 @@ export default class GMApi extends GM_Base {
 
   @GMContext.API({ alias: "GM_runExclusive" })
   ["GM.runExclusive"](lockKey: string, cb: (...args: any) => any, timeout: number = -1) {
-    lockKey = `${lockKey}`; // 轉化為字串
+    lockKey = `${lockKey}`; // 转化为字串
     if (!lockKey || !this.scriptRes) {
       throw new Error("Invalid Calling");
     }
     const key = `${getStorageName(this.scriptRes).replace(/:/g, ":_")}::${lockKey.replace(/:/g, ":_")}`;
     return new Promise((resolve) => {
-      let disconnectFn: (() => any) | null | undefined;
+      let killConn: (() => any) | null | undefined = undefined;
       let error: any;
       let result: any;
       let done = false;
       const onDisconnected = () => {
-        disconnectFn = null;
+        killConn = null; // before resolve, set disconnectFn to null
         resolve({
           result,
           error,
@@ -1419,9 +1419,13 @@ export default class GMApi extends GM_Base {
         onDisconnected(); // in case .disconnect() not working
       };
       this.connect("runExclusive", [key]).then((con) => {
-        disconnectFn = () => {
+        if (killConn === null) {
+          // already resolved
+          con.disconnect();
+          return;
+        }
+        killConn = () => {
           con.disconnect();
-          onDisconnected(); // in case .disconnect() not working
         };
         con.onDisconnect(onDisconnected);
         con.onMessage((data) => {
@@ -1435,7 +1439,8 @@ export default class GMApi extends GM_Base {
       if (timeout > 0) {
         setTimeout(() => {
           error = new Error("timeout");
-          disconnectFn?.();
+          killConn?.();
+          onDisconnected(); // in case .disconnect() not working
         }, timeout);
       }
     });