diff --git a/umap/static/umap/js/modules/data/layer.js b/umap/static/umap/js/modules/data/layer.js
index a742755b..febef6dc 100644
--- a/umap/static/umap/js/modules/data/layer.js
+++ b/umap/static/umap/js/modules/data/layer.js
@@ -528,8 +528,9 @@ export class DataLayer {
       .parse(raw, format)
       .then((geojson) => {
         this.sync.startBatch()
-        this.addData(geojson)
+        const data = this.addData(geojson)
         this.sync.commitBatch()
+        return data
       })
       .catch((error) => {
         console.debug(error)