Add supporting themes required for Lotusdocs

themes/hugo-mod-jslibs-dist/popperjs/package/lib/utils/expandToHashMap.js.flow

@@ -0,0 +1,11 @@
+// @flow
+
+export default function expandToHashMap<
+  T: number | string | boolean,
+  K: string
+>(value: T, keys: Array<K>): { [key: string]: T } {
+  return keys.reduce((hashMap, key) => {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}