Functional languages compiled to JavaScript in practice

The thesis focuses on functional principles applied in front-end application development. The main goal is to analyze applicability of functional language Elm in practice, in comparison to contemporary JavaScript that builds on React and Redux libraries. The goal was attained through analysis and comparison of JavaScript and Elm in regards to their architecture and support of real-life front-end application development. Main contribution of this thesis lies in comprehensive analysis and overview of front-end development using JavaScript and Elm. It offers strong argument for using Elm in practice today. It also fills a gap in BroadcastChannel API support in Elm using a dedicated package. The text of this thesis begins with a functional principles support analysis in JavaScript. Next, it describes the most used functional languages compiled to JavaScript, including their applicability by JavaScript developers. Then it compares front-end architecture of both JavaScript and Elm followed by a real-life development experience analysis. The thesis concludes with a practical implementation of a package that fills in for missing BroadcastChannel API support in Elm