Articles on JavaScript
It’s Never Been Better to Get Started with Cypress Web Tests
If your project could at all be described as a web application, your UX pipeline would likely benefit from adopting Cypress. Beating out Selenium on speed as well as breadth of testing tools, Cypress provides automated testing of your website’s critical features in a matter of minutes. A testing framework built on top of many …
Migrating From Sprockets to Webpacker
Starting with Rails 6, Webpacker became the default asset compiler, replacing sprockets–better known as the asset pipeline. While the asset pipeline was a big step for its time in making it easy to package JS, CSS, and images, webpack has matured enough to do all of the above and more, due to modern JavaScript’s support …
The Best of Both Worlds: HTML Apps & Svelte
At Carbon Five we try to be agile about our technology choices and pick the simplest tool for the job at hand. That means that even in 2019, the era of React and Redux and GraphQL and all the other fancy tools for client-side web applications, sometimes the best tool for our clients is a …
Replacing Component Lifecycle Methods with React Hooks
When writing React components, we sometimes need access to lifecycle events to handle a variety of side effects: fetching data on mount, sanitizing props when the component updates, cleaning up before the component unmounts, etc.
A Proposal: Elixir-Style Modules in JavaScript
Moving your code towards a more functional style can have a lot of benefits – it can be easier to reason about, easier to test, more declarative, and more. One thing that sometimes comes out worse in the move to FP, though, is organization. By comparison, Object Oriented Programming classes are a pretty useful unit …
An AJAX Auto-Save Implementation
For a recent client engagement, we were tasked with implementing auto-save on a multi-field form: any time any of the field values changed, we’d save the form to the server. This is a common scenario where users are composing longer inputs, such as emails, word processing, and spreadsheets.
An Introduction to ADTs and Structural Pattern Matching in TypeScript
Preface To quote Rúnar Bjarnason: One of the great features of modern programming languages is structural pattern matching on algebraic data types. Once you’ve used this feature, you don’t ever want to program without it. You will find this in languages like Haskell and Scala. I couldn’t agree more myself. That said, I spend most …
Easy pipeline debugging with curried console.log
These days I’ve been writing a lot more functional javascript, using tools like RxJS and Ramda. They allow for beautiful, declarative pipelines of functions, like:
Services and Serverless – Carbon Five LA Talk Night August 17th
The micro-services push is on with developers writing simpler applications that interact with each other. But how do you deploy these services? Manage versions and discoverability? Learn two approaches from our August 17th Talk Night speakers as they cover using Docker or going completely server-less with Amazon Web Services’ Lambda! First we’ll have Samuel Chow, …
New Arrow Functions in ES6!
Among many of the new features of ES6, aka ECMAScript 2015, is the arrow function expression, also known as the fat arrow function. For those that have been programming in CoffeeScript, the syntax will look quite at home. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. …