improve events

src/lib/utils/events.js

@@ -1,10 +1,12 @@
-export function send (name, value, labels) {
-  const event = new CustomEvent('sqliteviz-app-event', {
-    detail: {
-      name,
-      value,
-      labels
-    }
-  })
-  window.dispatchEvent(event)
+export default {
+  send (name, value, labels) {
+    const event = new CustomEvent('sqliteviz-app-event', {
+      detail: {
+        name,
+        value,
+        labels: labels || {}
+      }
+    })
+    window.dispatchEvent(event)
+  }
 }