Index: node_modules/es-toolkit/dist/array/unionBy.mjs
===================================================================
--- node_modules/es-toolkit/dist/array/unionBy.mjs	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/es-toolkit/dist/array/unionBy.mjs	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,7 @@
+import { uniqBy } from './uniqBy.mjs';
+
+function unionBy(arr1, arr2, mapper) {
+    return uniqBy(arr1.concat(arr2), mapper);
+}
+
+export { unionBy };