add all frontend files

node_modules/rc-tabs/es/util.js

@@ -0,0 +1,34 @@
+/**
+ * We trade Map as deps which may change with same value but different ref object.
+ * We should make it as hash for deps
+ * */
+export function stringify(obj) {
+  var tgt;
+  if (obj instanceof Map) {
+    tgt = {};
+    obj.forEach(function (v, k) {
+      tgt[k] = v;
+    });
+  } else {
+    tgt = obj;
+  }
+  return JSON.stringify(tgt);
+}
+var RC_TABS_DOUBLE_QUOTE = 'TABS_DQ';
+export function genDataNodeKey(key) {
+  return String(key).replace(/"/g, RC_TABS_DOUBLE_QUOTE);
+}
+export function getRemovable(closable, closeIcon, editable, disabled) {
+  if (
+  // Only editable tabs can be removed
+  !editable ||
+  // Tabs cannot be removed when disabled
+  disabled ||
+  // closable is false
+  closable === false ||
+  // If closable is undefined, the remove button should be hidden when closeIcon is null or false
+  closable === undefined && (closeIcon === false || closeIcon === null)) {
+    return false;
+  }
+  return true;
+}