1 files changed, 11 insertions, 0 deletions
diff --git a/popperjs/package/lib/utils/expandToHashMap.js.flow b/popperjs/package/lib/utils/expandToHashMap.js.flow
new file mode 100644
index 0000000..bfcc968
--- /dev/null
+++ b/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;
+  }, {});
+}