Index: node_modules/recharts/es6/animation/timeoutController.js
===================================================================
--- node_modules/recharts/es6/animation/timeoutController.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/recharts/es6/animation/timeoutController.js	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,31 @@
+/**
+ * Callback type for the timeout function.
+ * Receives current time in milliseconds as an argument.
+ */
+
+/**
+ * A function that, when called, cancels the timeout.
+ */
+
+export class RequestAnimationFrameTimeoutController {
+  setTimeout(callback) {
+    var delay = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
+    var startTime = performance.now();
+    var requestId = null;
+    var executeCallback = now => {
+      if (now - startTime >= delay) {
+        callback(now);
+        // tests fail without the extra if, even when five lines below it's not needed
+        // TODO finish transition to the mocked timeout controller and then remove this condition
+      } else if (typeof requestAnimationFrame === 'function') {
+        requestId = requestAnimationFrame(executeCallback);
+      }
+    };
+    requestId = requestAnimationFrame(executeCallback);
+    return () => {
+      if (requestId != null) {
+        cancelAnimationFrame(requestId);
+      }
+    };
+  }
+}