express-loggin-js

An express middleware for loggin-js

Table Of Content

• Installing
• Importing
• Api
  • .logger(opts)
  • .errorLogger(opts)
• Found a bug?
• Collaborating

Installing

• Install with npm

npm install express-loggin-js --save

Importing

// Require the logging library
const logging = require('loggin-js');

// Require the express middleware
const loggingMW = require('express-loggin-js');

Api

.logger(opts)

To create a loggin-js middleware is as easy as calling the available .logger function. You can create a default one by calling it without any arguments, additionally it also accepts a set of options defined bellow, here is a usage example:

const app = express();

app.use(logginMW.logger({
  color: true,
  loggers: [loggin.Loggers.ConsoleLogger]
}));

app.get('/hello', function (req, res) {
  // Logger is attached to the response to lert you use it within the routes
  res.logger.debug('Logger from within the response!');

  res.send({
   message: 'Hello world!'
  });
});

Options:
logger accepts an object containing some options, it extends options from loggin.Loggers.Options, and adds a couple of custom ones.

interface LoggerOptions = {
  /* Loggin'JS Options */
  color?: boolean;                        // Should the logger be colored
  lineNumbers?: boolean;                  // Should the logger output line numbers
  level?: number|string|loggin.Severity;  // Set the logger level
  channel?: string;                       // Set the channel for the logger, defaults to filename
  formatter: string;                      // Set the logger formatter
  
  /* Custom Options */
  loggers: loggin.Loggers.Logger[];       // List of loggers to pack
  msg: string|function;                   // Template or function to get the log message
  showRaw: boolean;                       // Show raw request
  ignore(req, res): boolean;              // Ignore routes
}

.errorLogger(opts)

To create an ERROR middleware is also really easy, just call .errorLogger instead. It accepts the same options as .logger

const app = express();

app.get('/hello', function (req, res) {
  // Logger is attached to the response to lert you use it within the routes
  res.logger.debug('Logger from within the response!');

  res.send({
   message: 'Hello world!'
  });
});

// Notice it's placed after routes and other app.use calls
app.use(logginMW.errorLogger({
  color: true,
  loggers: [loggin.Loggers.ConsoleLogger]
}));

Options:
errorLogger accepts an object containing some options, it extends options from loggin.Loggers.Options, and adds a couple of custom ones.

interface ErrorLoggerOptions = {
  /* Loggin'JS Options */
  color?: boolean;                        // Should the logger be colored
  lineNumbers?: boolean;                  // Should the logger output line numbers
  level?: number|string|loggin.Severity;  // Set the logger level
  channel?: string;                       // Set the channel for the logger, defaults to filename
  formatter: string;                      // Set the logger formatter
  
  /* Custom Options */
  loggers: loggin.Loggers.Logger[];       // List of loggers to pack
  msg: string|function;                   // Template or function to get the log message
  showRaw?: boolean;                      // Show raw request
  ignore?(req, res): boolean;             // Ignore routes
}

Found a bug?

If you found a bug or like to leave a feature request, please leave an issue and we will take care of it.

Just make sure it's not already filed.

Collaborating

Hi there, if you like the project don't hesitate in collaborating (if you like to), submit a pull request, post an issue, ...
Any help or ideas are apreciated!