Jonathan Curran - JavaScript to Purescript A Migration Story - λC 2018 скачать в хорошем качестве

Jonathan Curran - JavaScript to Purescript A Migration Story - λC 2018

Maintaining a large, interactive JavaScript web application is a challenging task given the dynamic nature of the language and the relatively few shared common abstractions supported by various libraries and frameworks in its ecosystem. Having outgrown JavaScript, Angular, and Redux-Sagas, we looked in our company to PureScript and Halogen in the hope of being able to easily maintain and steadily grow our application while being able to reason about its behavior with relative ease. During this session, we will explore what an iterative migration from a JavasScript-heavy application to a PureScript application looks like. We will explore various pain points experienced with the JavaScript ecosystem during the development of our application and show how we addressed these issues with the introduction of PureScript, Halogen, and a few supporting libraries. Participants will learn how we embedded PureScript in our existing web application, how we performed data validation and authentication, and how bi-directional messaging between UI components can be used to perform complex tasks. Finally, we will demonstrate a few testing strategies.