This article was created in partnership with Sencha. Thank you for supporting the partners who make SitePoint possible. JavaScript application source code has traditionally been hard to understand, due to code being spread across JavaScript, HTML, and CSS files, as well as events and data flowing through a number of non intuitive paths. Like all software, the JavaScript development environment includes bundlers, package managers, version control systems, and test tools. Each of these requires some learning curve. Inconsistencies and incompatibilities…