When I went to that list I was specifically looking for underscore.js and date.js. Seeing a serious project that does not use these libraries makes me twitch.
Maybe you couldn't see underscore.js because it was written as "Underscore"? Or maybe you didn't read the article…
Yeah, underscore was there but date wasn't. I guess my point was that there wasn't a date.js or some reasonable equivalent time library because date/time programming sucks.
The title says: "A List of Foundational JavaScript Tools" seems like those could be useful but not foundational. Right?