Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/node_modules/react-query/es/react/QueryClientProvider.js

@@ -0,0 +1,48 @@
+import React from 'react';
+var defaultContext = /*#__PURE__*/React.createContext(undefined);
+var QueryClientSharingContext = /*#__PURE__*/React.createContext(false); // if contextSharing is on, we share the first and at least one
+// instance of the context across the window
+// to ensure that if React Query is used across
+// different bundles or microfrontends they will
+// all use the same **instance** of context, regardless
+// of module scoping.
+
+function getQueryClientContext(contextSharing) {
+  if (contextSharing && typeof window !== 'undefined') {
+    if (!window.ReactQueryClientContext) {
+      window.ReactQueryClientContext = defaultContext;
+    }
+
+    return window.ReactQueryClientContext;
+  }
+
+  return defaultContext;
+}
+
+export var useQueryClient = function useQueryClient() {
+  var queryClient = React.useContext(getQueryClientContext(React.useContext(QueryClientSharingContext)));
+
+  if (!queryClient) {
+    throw new Error('No QueryClient set, use QueryClientProvider to set one');
+  }
+
+  return queryClient;
+};
+export var QueryClientProvider = function QueryClientProvider(_ref) {
+  var client = _ref.client,
+      _ref$contextSharing = _ref.contextSharing,
+      contextSharing = _ref$contextSharing === void 0 ? false : _ref$contextSharing,
+      children = _ref.children;
+  React.useEffect(function () {
+    client.mount();
+    return function () {
+      client.unmount();
+    };
+  }, [client]);
+  var Context = getQueryClientContext(contextSharing);
+  return /*#__PURE__*/React.createElement(QueryClientSharingContext.Provider, {
+    value: contextSharing
+  }, /*#__PURE__*/React.createElement(Context.Provider, {
+    value: client
+  }, children));
+};