A design paradigm for creating abstract divisions from related functionality in a software system. “The layers architectural pattern helps to structure applications that can be decomposed into groups of subtasks in which each group of subtasks is at a particular level of abstraction.” [📖POSA, p. 31] A Layered Architecture may…

Reflecting on the role and meaning of software development as craftsmanship. Seeing software development as handiwork implies the revaluation of certain inherent aspects formerly considered as important and those traditionally given less importance, and how this revaluation impacts the individual developer, a software development team, and the process of developing…

Fixing missing favicon.ico in Ext JS applications. The original issue is tracked here: https://github.com/conjoon/conjoon/issues/24 The issue I’m not quite sure when and why it broke, but it looks like production builds of Sencha Ext JS applications do not contain any favicon.ico originally existing in the development build (anymore). While everything seems to…

Implementing Constructor Injection with the help of JavaScript Proxies — Remove hardcoded dependencies in Code and provide interchangeable strategies for algorithms by injecting dependencies using an Inversion of Control-Container. Motivation Low coupling and high cohesion does not imply the total absence of associations: The usage of abstraction layers rightfully demands specifics that provide concrete implementations satisfying contracts between parts of a…

Using modern ECMAScript syntax with Sencha Ext JS projects — Sencha Ext JS ships with a closed source build tool that bundles the Closure Compiler; in some cases, this prevents developers from using modern ECMAScript syntax. This article introduces @coon-js/delorean, a tool that works around this issue with the help of an additional transpilation layer. One reason for frustration when…

I’m happy to announce conjoon 1.0, the very first major release of the Open Source JavaScript Email client. For updating to the latest version, simply use our installer. It will let you select the latest release when opting for the version to install. Highlights​ v1.0.0 marks the first major release for…

Dynamically mapping method calls to existing typed values. Motivation Large parts of the conjoon backend are currently being reworked to meet compliance with the JSON:API. …

Siesta is a JavaScript unit and UI testing tool originally written by Mats Bryntse which allows for running tests (for Ext JS (view-) components, amongst others) directly in the web browser (or headless in case you want to use it with your ci tools). It is conjoon’s favorite among the…

The internet ™️ has caught up on an ad by FERCHAU, found — amongst others — somewhere within the depths of the Berlin subway. Some devs cringe at the code used with the ad — turns out it can easily get de-mystified with JavaScript’s function-as-object style: const careerStuck…