fix: add hasOwnProperty check

midwayjs · Dec 11, 2018 · 19617c1 · 19617c1
1 parent 3004225
commit 19617c1
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/metrics/src/common/MetricName.ts b/packages/metrics/src/common/MetricName.ts
@@ -176,7 +176,9 @@ export class MetricName {
     let tagsArr = [];
 
     for(let key in this.tags) {
-      tagsArr.push(key + MetricName.TAGS_CONCAT + this.tags[key]);
+      if(this.tags.hasOwnProperty(key)) {
+          tagsArr.push(key + MetricName.TAGS_CONCAT + this.tags[key]);
+      }
     }
 
     tagsArr.sort();