grunt

1 files changed, 10 insertions, 2 deletions

diff --git a/js/dist/collapse.js b/js/dist/collapse.js
index f4a25a11c..41c5533b5 100644
--- a/js/dist/collapse.js
+++ b/js/dist/collapse.js
@@ -103,7 +103,11 @@ var Collapse = function ($) {
     Collapse.prototype.show = function show() {
       var _this = this;
 
-      if (this._isTransitioning || $(this._element).hasClass(ClassName.ACTIVE)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning');
+      }
+
+      if ($(this._element).hasClass(ClassName.ACTIVE)) {
         return;
       }
 
@@ -176,7 +180,11 @@ var Collapse = function ($) {
     Collapse.prototype.hide = function hide() {
       var _this2 = this;
 
-      if (this._isTransitioning || !$(this._element).hasClass(ClassName.ACTIVE)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning');
+      }
+
+      if (!$(this._element).hasClass(ClassName.ACTIVE)) {
         return;
       }