Providing authentication and authorization for non-public-facing components of your application is an important part of many systems. All major Scala frameworks come equipped with some native tools for doing that, with complexity and comprehensiveness ranging from basic HTTP scheme with Akka HTTP’s SecurityDirectives to numerous Play plugins like Deadbolt 2 or Silhouette. Read more

Introduction

One of hardest parts in developing and maintaining React/Redux application is handling asynchronous actions: timeouts, requests/response handling, interaction with third-party stores, different callbacks and so on without сomplicating logic into actions-creators and reducers.

In this post, I’m going a real project to show you how to move all side-effects ( and not only ) away from action-creators. All of this in a way that makes them as clean as possible with Redux-Saga. Read more

During the ReactConf 2018 the Hooks were presented and to be honest it has shaken up the React community. If you haven’t seen “React Today and Tomorrow and 90% Cleaner React With Hooks” video yet, then I encourage you to do so.

Introducing stateless functional components in React 0.14 allowed us to create a smaller reusable blocks of code. But if this component had to handle some more advanced logic, then we had to convert it into a class. Now, by introducing React Hooks, we’re able to inject some logic into functional components and futhermore we can reuse this logic blocks in multiple components. Read more

Are you currently working on JWT authentication in React and Redux App? Don’t you know how to handle it? In this article we will cover a sign in process step by step. Read more

Binding.scala is a one-way data-binding library written in Scala. It lets you create reactive user interfaces by writing concise Scala code. In this post, I’ll guide you step by step through the basics, as well as creating a simple dynamic web page. On top of that, I will discuss some undocumented issues I faced, which might be interesting for you if you decide to give Binding.scala a chance in your next project. Read more

The example of Facebook dealing with chat problem shows how important it is to properly manage the state of web applications (and I mean UI state). Facebook tried to synchronize a counter between unread messages and currently open chatboxes which caused lots of problems for the users. Read more

The good old days when a webpage had just few JavaScript and CSS files are gone, now our web apps grow bigger and more complex every year.

And how to manage and develop all that code? First was Grunt but quickly replaced with Gulp and Browserify, which are great. But configuring them properly takes too much time. Fortunately for us developing tools are also evolving and Webpack comes with lots of functionalities ready out-of-box which can significantly speedup process of creating software. Read more

For the last two months I have been familiarising myself with React which was the most popular technology in 2015. Some say that 2016 will be the year of Angular 2 – a completely rewritten, very popular JavaScript framework from Google. Previously, on my own blog, I showed you what’s new in Angular 2 so, if you are new to it, you may want to check that post first.

Today, as I find these two technologies similar in some ways, I decided to compare them. Read more

Replumb is a new library we decided to hack together as single point of reference for future implementations of ClojureScript self-hosted REPLs. At the moment its current version is displayed in all its beauty on clojurescript.io.

The ClojureScript community has already put in a huge amount of effort in order to introduce this very cool feature of having a bootstrapping compiler and as we both are a new member of it and immensely keen on building cool stuff, we thought we could add some glue for it.

This blog post unveils the magic and the gotchas behind require, the omnipresent Clojure(Script) function that loads your symbols in the current namespace. Read more

Introduction

yoda

This blog post was created to see how Scala.js is holding on and have some fun with programming. I decided to do a simple mini-game using Scala.js and Three.js libraries.

I will explore Scala.js from practical perspective. You’ll see the perks of using typed languages in frontend. We are also going to take a look under the hood and see some generated JS code. Finally I’m going to present some advantages and disadvantages of Scala.js and try to answer the question: Is Scala.js production ready ? Read more