Add warning if someone not define correctly a title to display for the tooltip

Author: sfe-efficy

packages/bootstrap-vue-3/src/directives/BTooltip.ts

@@ -65,8 +65,13 @@ const resolveDelay = (values: DirectiveBinding['value']): Tooltip.Options['delay
   return 0
 }
 
-const resolveTitle = (values: DirectiveBinding['value']): Tooltip.Options['title'] | undefined =>
-  typeof values === 'object' ? values?.title : values
+const resolveTitle = (values: DirectiveBinding['value']): Tooltip.Options['title'] | undefined => {
+  if (typeof values === 'undefined') {
+    console.warn('Review tooltip directive usage. Some uses are not defining a title in root component or a value like `v-b-tooltip=\'{title: "my title"}\'` nor `v-b-tooltip="\'my title\'"` to define a title');
+    return;
+  }
+  return typeof values === 'object' ? values?.title : values;
+}
 
 /**
  * @external