My talk on CSS runtime performance
A few months ago, I gave a talk on CSS performance at performance.now in Amsterdam. The recording is available online: (You can also read the slides.) This is one of my favorite talks I’ve ever given. It was the product of months (honestly, years) of research, prompted by a couple questions: What is the fastest way to implement scoped styles? (Surprisingly few people seem to ask this question.) Do
The balance has shifted away from SPAs
21 May The balance has shifted away from SPAs Posted May 21, 2022 by Nolan Lawson in Web. Tagged: spas. 24 Comments There’s a feeling in the air. A zeitgeist. SPAs are no longer the cool kids they once were 10 years ago. Hip new frameworks like Astro, Qwik, and Elder.js are touting their MPA capabilities with “0kB JavaScript by default.” Blog posts are making the rounds listing all the challenges
Introducing fuite: a tool for finding memory leaks in web apps
17 Dec Introducing fuite: a tool for finding memory leaks in web apps Posted December 17, 2021 by Nolan Lawson in performance, Web. Tagged: memory, performance. 18 Comments Debugging memory leaks in web apps is hard. The tooling exists, but it’s complicated, cumbersome, and often doesn’t answer the simple question: Why is my app leaking memory? Because of this, I’d wager that most web developers a
How to write about web performance
12 Sep How to write about web performance Posted September 12, 2021 by Nolan Lawson in performance, Web. Tagged: performance. 3 Comments I’ve been writing about performance for a long time. I like to think I’ve gotten pretty good at it, but sometimes I look back on my older blog posts and cringe at the mistakes I made. This post is an attempt to distill some of what I’ve learned over the years to
JavaScript performance beyond bundle size
23 Feb JavaScript performance beyond bundle size Posted February 23, 2021 by Nolan Lawson in performance, Web. 8 Comments There’s an old story about a drunk trying to find his keys in the streetlight. Why? Well, because that’s where it’s the brightest. It’s a funny story, but also relatable, because as humans we all tend to take the path of least resistance. I think we have the same problem in the
A tour of JavaScript timers on the web
1 Sep A tour of JavaScript timers on the web Posted September 1, 2018 by Nolan Lawson in Web. Tagged: javascript, performance. 14 Comments Pop quiz: what is the difference between these JavaScript timers? Promises setTimeout setInterval setImmediate requestAnimationFrame requestIdleCallback More specifically, if you queue up all of these timers at once, do you have any idea which order they’ll fir
Smaller Lodash bundles with Webpack and Babel | Read the Tea Leaves
20 Mar Smaller Lodash bundles with Webpack and Babel Posted March 20, 2018 by Nolan Lawson in Web. Tagged: javascript, lodash, performance. 9 Comments One of the benefits of working with smart people is that you can learn a lot from them through osmosis. As luck would have it, a recent move placed my office next to John-David Dalton‘s, with the perk being that he occasionally wanders into my offic
The cost of small modules
15 Aug The cost of small modules Posted August 15, 2016 by Nolan Lawson in performance, Web. 53 Comments Update (30 Oct 2016): since I wrote this post, a bug was found in the benchmark which caused Rollup to appear slightly better than it would otherwise. However, the overall results are not substantially different (Rollup still beats Browserify and Webpack, although it’s not quite as good as Clos
High-performance Web Worker messages
29 Feb High-performance Web Worker messages Posted February 29, 2016 by Nolan Lawson in Webapps. Tagged: performance, web workers. 16 Comments Update: this blog post was based on the latest browsers as of early 2016. Things have changed, and in particular the benchmark shows that recent versions of Chrome do not exhibit the performance cliff for non-stringified postMessage() messages as described
How to fix a bug in an open-source project
28 Dec How to fix a bug in an open-source project Posted December 28, 2015 by Nolan Lawson in Open source. 11 Comments So, you’ve found a bug in an open-source project. First off: don’t panic! This is perfectly normal. Software is written by humans, and humans make mistakes. You might also be thinking to yourself, “Gee, I’d love to fix this bug.” I mean, who wouldn’t want to be the hero who swoops
The struggles of publishing a JavaScript library
19 Oct The struggles of publishing a JavaScript library Posted October 19, 2015 by Nolan Lawson in Webapps. Tagged: javascript, modules, npm. 19 Comments If you’ve done any web development in the past few years, then you’ve probably typed something like this: $ bower install jquery Or maybe even: $ npm install --save lodash For anyone who remembers the dark days of combing Github for jQuery plugin
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