I quite like the Firefox devtools, but you may be happy to know that brand-new, rewritten devtools are currently coming down the pipeline.
There's also WebReplay, a time-traveling debugger for JS and the rest of the browser, which is a bit longer off but is absolutely amazing (I've seen a demonstration): https://developer.mozilla.org/en-US/docs/Mozilla/Projects/We...
I quite like the Firefox devtools, but you may be happy to know that brand-new, rewritten devtools are currently coming down the pipeline.
There's also WebReplay, a time-traveling debugger for JS and the rest of the browser, which is a bit longer off but is absolutely amazing (I've seen a demonstration): https://developer.mozilla.org/en-US/docs/Mozilla/Projects/We...