Unsure if the cost of JavaScript is too high for your user-experience? 🙃 Lighthouse has a JavaScript execution time audit that measures the total i...
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Lighthouse really is one of the best tools I've seen for this sort of thing. I hope it keeps evolving and becomes a longterm cornerstone for web perf measurement.
Absolutely and the cherry on the cake : Lighthouse could be extendable with custom audits (sort of plugins). I have wrote a tutorial explaining how to here :
Google Lighthouse custom audits tutorial
Aymen Loukil
I lighthouse test everything, it's an awesome tool!
Lighthouse is really cool. I killed my open source project that was doing a similar thing after I discovered it.
Lighthouse is definitely a great tool. I run it on any site I truly care about achieving top performance on.