I tried compiling it as suggested by the GitHub page.

The build folder weighs in at 618MB and it took 5 minutes and 139 packages to compile on a decent 2019 machine. The final executable is 84M (debug, 11MB after stripping)

It then takes something like 10MB of RAM for opening an empty file, of which 1MB is on the heap.

It is not Electron, but for an "ed" remake, it is definitely a bloat monster. Overall, it is 100 to 1000 times heavier than "ed".

EDIT: speaking of bloat, I remember when EMACS was nicknamed "Eight Megabytes And Constantly Swapping" as a joke on how bloated it was. Times have changed...