Index: node_modules/recharts/lib/util/stacks/getStackSeriesIdentifier.js
===================================================================
--- node_modules/recharts/lib/util/stacks/getStackSeriesIdentifier.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/recharts/lib/util/stacks/getStackSeriesIdentifier.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,14 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.getStackSeriesIdentifier = getStackSeriesIdentifier;
+/**
+ * Returns identifier for stack series which is one individual graphical item in the stack.
+ * @param graphicalItem - The graphical item representing the series in the stack.
+ * @return The identifier for the series in the stack
+ */
+function getStackSeriesIdentifier(graphicalItem) {
+  return graphicalItem === null || graphicalItem === void 0 ? void 0 : graphicalItem.id;
+}
Index: node_modules/recharts/lib/util/stacks/stackTypes.js
===================================================================
--- node_modules/recharts/lib/util/stacks/stackTypes.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/recharts/lib/util/stacks/stackTypes.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,1 @@
+"use strict";