you cannot save (as in, redeem, rescue, fix, improve, ameliorate, etc.) javascript very much, is what i have learned from all the tools and languages i've used over the years that purport to do so (eg typescript and flow). they maybe help a little now and then but the abstraction is sooooo olestra leaky that it kinda ends up being such a big fat lie that it is almost worse in some regards. apparently, however, you can make the whole thing even worse by having tools that are apparently broken junk. why is "this" undefined, but "this.db" isn't? etc.