.

node_modules/@babel/runtime/helpers/esm/classExtractFieldDescriptor.js

@@ -0,0 +1,6 @@
+export default function _classExtractFieldDescriptor(receiver, privateMap, action) {
+  if (!privateMap.has(receiver)) {
+    throw new TypeError("attempted to " + action + " private field on non-instance");
+  }
+  return privateMap.get(receiver);
+}