Introduction to Kraken-js

Kraken-js is a secure and scalable layer that extends Express by providing structure and convention, along with a set of powerful tools to manage and build robust applications. In this guide, we’ll explore dozens of useful APIs offered by Kraken-js, accompanied by practical code snippets and an example application.

Getting Started with Kraken-js

First, install Kraken-js via npm:

  
    npm install kraken-js --save
  

Configuration API

Manage your application’s configuration using the kraken-js configuration API.

  
    const kraken = require('kraken-js');
    const app = express();

    const options = {
      onconfig: function (config, next) {
        // Modify the config object before it gets used
        next(null, config);
      }
    };

    app.use(kraken(options));
    app.listen(8000);
  

Middleware API

Leverage middleware for functionality like security, logging, and application metrics.

  
    const kraken = require('kraken-js');
    const app = express();

    // Security middleware
    const helmet = require('helmet');
    app.use(helmet());

    // Logging middleware
    const morgan = require('morgan');
    app.use(morgan('combined'));

    app.use(kraken());
    app.listen(8000);
  

Routing API

Define routes easily and effectively with Kraken-js.

  
    const router = require('express').Router();

    router.get('/', (req, res) => {
      res.send('Hello, Kraken-js!');
    });

    module.exports = router;
  

Security API

Implement security measures such as CSRF protection.

  
    const kraken = require('kraken-js');
    const app = express();

    const lusca = require('lusca');
    app.use(lusca.csrf());

    app.use(kraken());
    app.listen(8000);
  

Application Example

Now, let’s see an example application that uses all the discussed APIs:

  
    const express = require('express');
    const kraken = require('kraken-js');
    const lusca = require('lusca');
    const helmet = require('helmet');
    const morgan = require('morgan');
    const app = express();

    const options = {
      onconfig: function (config, next) {
        // Modify config
        next(null, config);
      }
    };
 
    app.use(helmet());
    app.use(morgan('combined'));
    app.use(lusca.csrf());
    app.use(kraken(options));

    // Routing middleware
    const router = require('express').Router();
    router.get('/', (req, res) => {
      res.send('Hello, Kraken-js!');
    });
    app.use(router);

    app.listen(8000, () => {
      console.log('App is running on http://localhost:8000');
    });
  

By following this comprehensive guide, you can build robust and scalable applications using Kraken-js with ease.

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