The __filename variable in Node.js serves a specific and important purpose. It holds the absolute path of the code file that is currently being executed. This means that __filename provides the complete path starting from the root of the file system to the file itself, including the file name[1][2].
The primary use of __filename is to help developers obtain the exact location of the file that is running. This can be particularly useful in various scenarios such as logging, generating file paths relative to the current file, or when you need to access resources in the same directory as the script. For instance, if you need to read or write files in the same directory, knowing the absolute path through __filename can be very handy[1][2].
Moreover, __filename can be used to display or log the name of the file, which can help in debugging by identifying which part of the application the logs are coming fro...
