优化

src/services/provider/scan.js

@@ -235,27 +235,30 @@ export function clear() {
 }
 
 export function onScanListener(listener, key, match, level) {
+  if (!key || typeof key !== 'string') {
+    return;
+  }
   if (typeof listener !== 'function') {
     return;
   }
   let item = null;
   for (let i = 0; i < _scan_listener_list.length; i++) {
     const _i = _scan_listener_list[i];
-    if (_i.listener === listener) {
+    if (_i.key === key) {
       item = _i;
       break;
     }
   }
   if (item) {
-    item.key = key;
     item.level = level;
     item.match = match;
+    item.listener = listener;
   } else {
     item = {
       key,
-      match,
-      level,
-      listener,
+      match: match || "",
+      level: level || 0,
+      listener: listener ,
       cancel: () => {
         const index = _scan_listener_list.indexOf(item);
         if (index !== -1) {