Making JavaScript on WebAssembly fast

JavaScript in the browser runs many times faster than it did two decades ago. And that happened because the browser vendors spent that time working on intensive performance optimizations in their JavaScript engines.

Because of this optimization work, JavaScript is now running in many places besides the browser. But there are still some environments where the JS engines can’t apply those optimizations in the right way to make things fast.

We’re working to solve this, beginning a whole new wave of JavaScript optimization work. We’re improving JavaScript performance for entirely different environments, where different rules apply. And this is possible because of WebAssembly. In this talk, I’ll explain how this all works and what’s coming next.

Watch the replay!
Lin Clark photo

Lin Clark

Senior Principal Software Engineer, Fastly

Lin Clark is a Senior Principal Engineer at Fastly, focusing on WebAssembly. She is a co-founder of the Bytecode Alliance, which is driving WebAssembly’s outside-the-browser ecosystem forward. Many people know her through her long-running series, Code Cartoons, which helps people make sense of various WebAssembly standards and the ecosystem’s overall direction. She has worked on web standardization and devtools at Mozilla, helped people understand the JS ecosystem at npm, and was a Drupal core module maintainer.