BROWSER_RUNTIME: DuckDBRuntime & {
    _fileInfoCache: Map<number, DuckDBFileInfo>;
    _files: Map<string, any>;
    _globalFileInfo: DuckDBGlobalFileInfo | null;
    _opfsRoot: FileSystemDirectoryHandle | null;
    _preparedHandles: Record<string, FileSystemSyncAccessHandle>;
    assignOPFSRoot(): Promise<void>;
    getFileInfo(mod, fileId): null | DuckDBFileInfo;
    getGlobalFileInfo(mod): null | DuckDBGlobalFileInfo;
} = ...

Type declaration