Does anyone know why those web-dev tools: yarn, npm, npx, pnpm don't have man entries? man isn't probably used much anymore, but not having it makes them appear less serious and mature to me.

Probably because the Internet exists.

Because your average JS dev has no clue how to use these things and googles dafuq out of everything anyway.

@C0D4 not only that, but I have noticed that newer developers have the attention span of a dead fly

They started. It's just that before finishing the manual for one, they already invent another.

wdym? npm/npx manpage exists

And most tools have a help command

There’s no clear winner in the man-integration JS framework yet. Last I heard 9 out of the 15 frameworks from last year died. At this pace we will have it narrowed down to 3 decent frameworks in 5 years, so just be patient or contribute your own.

@devRancid I get this with $ npm help npm but man npm returns No manual entry for npm.

man is mostly for system tools.