How to use the morgan.compile function in morgan

// get the status code if response written
        var status = headersSent(res)
            ? res.statusCode
            : undefined;
        // get status color
        var color = status >= 500 ? 31 // red
            : status >= 400 ? 33 // yellow
                : status >= 300 ? 36 // cyan
                    : status >= 200 ? 32 // green
                        : 0; // no color
        // get colored function
        var fn = developmentFormatLine[color];
        if (!fn) {
            // compile
            // Avoid Typescript Error TS2339 (Morgan typings lacks compile)
            fn = developmentFormatLine[color] = logger.compile('\x1b[0m:method :url :body :user \x1b[' +
                color + 'm:status \x1b[0m:response-time ms - :res[content-length]\x1b[0m');
        }
        return fn(tokens, req, res);
    });
    //app.use(logger(':method :url :body :status :response-time ms - :res[content-length]'));