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March 08, 2016 Serverless Slackbots Powered by AWS By Kevin Deisz Today Localytics is open sourcing two tools that help you quickly scaffold custom Slack commands using AWS Lambda, AWS API Gateway, and the Serverless framework. These tools grew out of our continued investment in making ChatOps the primary way Localytics engineers manage our infrastructure. With Serverless and a small bit of scaffo

November 23, 2015 Faster SASS builds with Webpack By Francois Ward If hot reload is part of your CSS development workflow, compilation performance is critical. That 5-second compile time in your large application is now a liability. You're already enjoying a more efficient workflow if you're using hot reload for CSS. You no longer have to wait for full page reloads after every change. Optimizing l

August 10, 2015 Tips & Tricks for debugging unfamiliar AngularJS code By Francois Ward You've been given an Angular code base. How do you figure out where everything is? Where scope variables are coming from? What controller does what? Angular doesn't make it easy, but there are few tips and tricks that can make your life easier. Tools like Angular Batarang can help, but they're not always install

JavaScript is single threaded. To avoid blocking applications when performing an ajax request or reading a file, these operations are usually executed asynchronously. Some mechanism is then required to keep track of what is happening. The Problem Most asynchronous JavaScript APIs like XMLHttpRequest expose a way to assign a function, or callback, that will be invoked when the task is completed. Wh