first commit

frontend/node_modules/rc-util/lib/Dom/contains.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = contains;
+function contains(root, n) {
+  if (!root) {
+    return false;
+  }
+
+  // Use native if support
+  if (root.contains) {
+    return root.contains(n);
+  }
+
+  // `document.contains` not support with IE11
+  var node = n;
+  while (node) {
+    if (node === root) {
+      return true;
+    }
+    node = node.parentNode;
+  }
+  return false;
+}