This page contains information on creating and assigning a logger of an index, as well as on the implementation of a custom logger.
Use of standard file logger In order to save information about events and errors in an index into a file, you should use the standard file logger or your own custom logger. It is important to remember that each time you open an existing index, you must create and assign an instance of the logger again, because the logger is not saved....Search for Node.js / Developer Guide / Advanced...