1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index bb639f91b..a407511f6 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -30,6 +30,12 @@ const ScrollSpy = (($) => {
     target : ''
   }
 
+  const DefaultType = {
+    offset : 'number',
+    method : 'string',
+    target : '(string|element)'
+  }
+
   const Event = {
     ACTIVATE      : `activate${EVENT_KEY}`,
     SCROLL        : `scroll${EVENT_KEY}`,
@@ -164,6 +170,8 @@ const ScrollSpy = (($) => {
         config.target = `#${id}`
       }
 
+      Util.typeCheckConfig(NAME, config, DefaultType)
+
       return config
     }