Optimizing Javascript for fun and for profit

Date: May 21, 2025·Tags: #perf, #javascript, #dev, #good-reading

What's confusing for me is many common coding patterns, while generally considered good, can actually become performance bottlenecks in optimizing JavaScript for speed. For example

  • Avoid array/object methods like map, filter in functional style
  • Prefer concatenation over template literals for strings

Still many other tricks are useful.

Refs:

<-New Named Tuples Feature since Scala 3.7
Playground Wisdom: Threads Beat Async/Await->