Don't pass metadata object to users onCompleted.

- Users should use result.summarize() to get metadata.

Author: oskarhane

README.md

@@ -46,8 +46,8 @@ session.run(statement.join(' '), params).subscribe({
         for(var i in record) {
             console.log(i, ': ', record[i]);
         }
-    }, onCompleted: function(metadata) {
-        console.log(metadata);
+    }, onCompleted: function() {
+        session.close();
     }, onError: function(error) {
         console.log(error);
     }
@@ -61,7 +61,8 @@ session.run(statement.join(' '), params)
             for(var i in record) {
                 console.log(i, ': ', record[i]);
             }
-        })
+        });
+        session.close();
     })
     .catch(function(error) {
         console.log(error);

lib/result.js

@@ -94,7 +94,7 @@ class Result {
     let onCompletedOriginal = observer.onCompleted;
     let onCompletedWrapper = (metadata) => {
       this.summary = new ResultSummary(this._statement, this._parameters, metadata);
-      onCompletedOriginal.call(observer, metadata);
+      onCompletedOriginal.call(observer);
     }
     observer.onCompleted = onCompletedWrapper;
     this._streamObserver.subscribe(observer);