Grabbed dndbeyond's source code

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

ddb_main/subApps/builder/contexts/ModalManager/ModalManager.tsx

@@ -0,0 +1,59 @@
+import { createContext, FC, useContext, useState } from "react";
+
+import { ConfirmModal, ConfirmModalProps } from "~/components/ConfirmModal";
+
+export interface ModalData {
+  content: React.ReactNode;
+  props: Omit<ConfirmModalProps, "open">;
+}
+export interface ModalManagerContextType {
+  createModal: (modalData: ModalData) => void;
+}
+
+export const ModalManagerContext = createContext<ModalManagerContextType>(
+  null!
+);
+
+export const ModalManagerProvider: FC = ({ children }) => {
+  const [modalData, setModalData] = useState<ModalData | null>(null);
+
+  const createModal = (modalData: ModalData) => {
+    setModalData(modalData);
+  };
+
+  const removeModal = () => {
+    setModalData(null);
+  };
+
+  const handleClose = () => {
+    removeModal();
+    if (modalData) {
+      modalData.props.onClose();
+    }
+  };
+
+  const handleConfirm = () => {
+    removeModal();
+    if (modalData) {
+      modalData.props.onConfirm();
+    }
+  };
+
+  return (
+    <ModalManagerContext.Provider value={{ createModal }}>
+      {children}
+      <ConfirmModal
+        {...modalData?.props}
+        onConfirm={handleConfirm}
+        onClose={handleClose}
+        open={!!modalData}
+      >
+        {modalData?.content}
+      </ConfirmModal>
+    </ModalManagerContext.Provider>
+  );
+};
+
+export const useModalManager = () => {
+  return useContext(ModalManagerContext);
+};