1 files changed, 11 insertions, 0 deletions
diff --git a/popperjs/package/dist/esm/utils/uniqueBy.js b/popperjs/package/dist/esm/utils/uniqueBy.js
new file mode 100644
index 0000000..5e083f3
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/uniqueBy.js
@@ -0,0 +1,11 @@
+export default function uniqueBy(arr, fn) {
+  var identifiers = new Set();
+  return arr.filter(function (item) {
+    var identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
+\ No newline at end of file