pass correct arguments to onClick in BpkButton

Author: Arthur Vivian

changelog.md

@@ -2,7 +2,9 @@
 
 ## UNRELEASED
 
-__Nothing yet...__
+**Fixed:**
+- bpk-component-button:
+  - Fixed SyntheticEvent not being passed to the onClick handler.
 
 ## 2017-08-17 (2) - Fix a missing dependency in several components
 

packages/bpk-component-button/src/BpkButton.js

@@ -71,9 +71,9 @@ const BpkButton = (props) => {
 
   // Due to React bug in Chrome, the onClick event fires even if the button is disabled.
   // Pull request is being worked on (as of 2016-12-22): https://github.com/facebook/react/pull/8329
-  const onClickWrapper = onClick ? () => {
+  const onClickWrapper = onClick ? (...args) => {
     if (!disabled) {
-      onClick(...arguments);
+      onClick(...args);
     }
   } : null;