1 files changed, 47 insertions, 5 deletions
diff --git a/js/dist/dom/selector-engine.js b/js/dist/dom/selector-engine.js
index de6949b177..1d260dce76 100644
--- a/js/dist/dom/selector-engine.js
+++ b/js/dist/dom/selector-engine.js
@@ -1,5 +1,5 @@
 /*!
-  * Bootstrap selector-engine.js v5.0.2 (https://getbootstrap.com/)
+  * Bootstrap selector-engine.js v5.1.0 (https://getbootstrap.com/)
   * Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   */
@@ -11,15 +11,52 @@
 
   /**
    * --------------------------------------------------------------------------
-   * Bootstrap (v5.0.2): dom/selector-engine.js
+   * Bootstrap (v5.1.0): util/index.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
    * --------------------------------------------------------------------------
    */
 
+  const isElement = obj => {
+    if (!obj || typeof obj !== 'object') {
+      return false;
+    }
+
+    if (typeof obj.jquery !== 'undefined') {
+      obj = obj[0];
+    }
+
+    return typeof obj.nodeType !== 'undefined';
+  };
+
+  const isVisible = element => {
+    if (!isElement(element) || element.getClientRects().length === 0) {
+      return false;
+    }
+
+    return getComputedStyle(element).getPropertyValue('visibility') === 'visible';
+  };
+
+  const isDisabled = element => {
+    if (!element || element.nodeType !== Node.ELEMENT_NODE) {
+      return true;
+    }
+
+    if (element.classList.contains('disabled')) {
+      return true;
+    }
+
+    if (typeof element.disabled !== 'undefined') {
+      return element.disabled;
+    }
+
+    return element.hasAttribute('disabled') && element.getAttribute('disabled') !== 'false';
+  };
+
   /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
+   * --------------------------------------------------------------------------
+   * Bootstrap (v5.1.0): dom/selector-engine.js
+   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+   * --------------------------------------------------------------------------
    */
   const NODE_TEXT = 3;
   const SelectorEngine = {
@@ -76,6 +113,11 @@
       }
 
       return [];
+    },
+
+    focusableChildren(element) {
+      const focusables = ['a', 'button', 'input', 'textarea', 'select', 'details', '[tabindex]', '[contenteditable="true"]'].map(selector => `${selector}:not([tabindex^="-"])`).join(', ');
+      return this.find(focusables, element).filter(el => !isDisabled(el) && isVisible(el));
     }
 
   };