code analysis Slaying God-Classes with "AST Scout", a code structure visualization tool A few months ago I worked on a legacy Typescript project where having Class files with more than 1,500 lines-of-code was quite common. A single source-file with this many lines-of-code is sometimes
automation Monitoring unused CSS by unleashing the raw power of the DevTools Protocol Update: Check out headless-devtools, a library for automating DevTools actions from code by leveraging the DevTools Protocol Chrome DevTools is the go-to analysis tool for understanding what's going on under-the-covers of your app
code analysis Writing a custom ESLint rule to spot undeclared props hiding in plain sight This post aims to give a walkthrough of how to design a custom ESLint rule without any prerequisites. However, some experience with Javascript Abstract Syntax Trees (ASTs) will be helpful. Consider watching my
performance Extracting actionable insights from web perf optimizations This was originally posted at the 2015 Performance Calendar. A lot of different factors can affect a web page's performance. For this reason, truly effective Web Performance Optimization starts with identifying the most
javascript Raiding memory leaks in the Pyramid of PrevObject A while ago I found that interaction with a component in our site results in many detached dom elements. At first glance, it wasn't clear from the code what was causing it. After
performance Releasing "Chunk Scatter", an HTTP chunked encoding analysis tool Update: I presented a talk about this tool at the 2016 Reversim Summit. Slides can be found here. "Chunk Scatter" (github, demo) is a simple tool I wrote for analyzing HTTP
javascript Prototype's real world usage: optimizing memory usage One of the first things you learn about Javascript when you start delving into the language is that it doesn't support classical inheritance, but rather prototypal inheritance. The topic of prototype-based inheritance is
Announcing "Food Announcer", a food delivery robot Last month our company had its yearly Hackathon. The hardest part of any Hackathon is, of course, to choose what project to take on. I knew I wanted to break out of my