Move dropdown offset function logic into private function. (#28138)

1 files changed, 13 insertions, 6 deletions

diff --git a/js/src/dropdown.js b/js/src/dropdown.js
index 9aaf5a339e..31deaa725e 100644
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@@ -319,24 +319,30 @@ class Dropdown {
     return $(this._element).closest('.navbar').length > 0
   }
 
-  _getPopperConfig() {
-    const offsetConf = {}
+  _getOffset() {
+    const offset = {}
+
     if (typeof this._config.offset === 'function') {
-      offsetConf.fn = (data) => {
+      offset.fn = (data) => {
         data.offsets = {
           ...data.offsets,
-          ...this._config.offset(data.offsets) || {}
+          ...this._config.offset(data.offsets, this._element) || {}
         }
+
         return data
       }
     } else {
-      offsetConf.offset = this._config.offset
+      offset.offset = this._config.offset
     }
 
+    return offset
+  }
+
+  _getPopperConfig() {
     const popperConfig = {
       placement: this._getPlacement(),
       modifiers: {
-        offset: offsetConf,
+        offset: this._getOffset(),
         flip: {
           enabled: this._config.flip
         },
@@ -352,6 +358,7 @@ class Dropdown {
         enabled: false
       }
     }
+
     return popperConfig
   }