Add files

509bba0_unpacked_with_node_modules/~/tabbable/index.js

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+module.exports = function(el) {
+  var basicTabbables = [];
+  var orderedTabbables = [];
+
+  // A node is "available" if
+  // - it's computed style
+  var isUnavailable = createIsUnavailable();
+
+  var candidateSelectors = [
+    'input',
+    'select',
+    'a[href]',
+    'textarea',
+    'button',
+    '[tabindex]',
+  ];
+
+  var candidates = el.querySelectorAll(candidateSelectors);
+
+  var candidate, candidateIndex;
+  for (var i = 0, l = candidates.length; i < l; i++) {
+    candidate = candidates[i];
+    candidateIndex = parseInt(candidate.getAttribute('tabindex'), 10) || candidate.tabIndex;
+
+    if (
+      candidateIndex < 0
+      || (candidate.tagName === 'INPUT' && candidate.type === 'hidden')
+      || candidate.disabled
+      || isUnavailable(candidate)
+    ) {
+      continue;
+    }
+
+    if (candidateIndex === 0) {
+      basicTabbables.push(candidate);
+    } else {
+      orderedTabbables.push({
+        tabIndex: candidateIndex,
+        node: candidate,
+      });
+    }
+  }
+
+  var tabbableNodes = orderedTabbables
+    .sort(function(a, b) {
+      return a.tabIndex - b.tabIndex;
+    })
+    .map(function(a) {
+      return a.node
+    });
+
+  Array.prototype.push.apply(tabbableNodes, basicTabbables);
+
+  return tabbableNodes;
+}
+
+function createIsUnavailable() {
+  // Node cache must be refreshed on every check, in case
+  // the content of the element has changed
+  var isOffCache = [];
+
+  // "off" means `display: none;`, as opposed to "hidden",
+  // which means `visibility: hidden;`. getComputedStyle
+  // accurately reflects visiblity in context but not
+  // "off" state, so we need to recursively check parents.
+
+  function isOff(node, nodeComputedStyle) {
+    if (node === document.documentElement) return false;
+
+    // Find the cached node (Array.prototype.find not available in IE9)
+    for (var i = 0, length = isOffCache.length; i < length; i++) {
+      if (isOffCache[i][0] === node) return isOffCache[i][1];
+    }
+
+    nodeComputedStyle = nodeComputedStyle || window.getComputedStyle(node);
+
+    var result = false;
+
+    if (nodeComputedStyle.display === 'none') {
+      result = true;
+    } else if (node.parentNode) {
+      result = isOff(node.parentNode);
+    }
+
+    isOffCache.push([node, result]);
+
+    return result;
+  }
+
+  return function isUnavailable(node) {
+    if (node === document.documentElement) return false;
+
+    var computedStyle = window.getComputedStyle(node);
+
+    if (isOff(node, computedStyle)) return true;
+
+    return computedStyle.visibility === 'hidden';
+  }
+}
+
+
+
+//////////////////
+// WEBPACK FOOTER
+// ./~/tabbable/index.js
+// module id = 2892
+// module chunks = 4