This is the killer feature that keeps me a ff user, now that browsers are so equal in performance.
Worked surprisingly well given the network speeds we had (28.8k modems)
The only reason I haven't got into org-mode is because of the context switch and the fact that I'll spend more time figuring how to organise my thoughts.
But emacs is still my daily driver for everything I work with but typescript, so far. It's the most seductive technology I've ever had the pleasure of working with.