Yikes; alternate uses for _two_ already-overloaded terms ("flow" and "node") in the tagline? Naming things isn't _that_ hard. Less of a nitpick and more of a red flag wrt wisdom and experience of the lib's authors.
“Node-based interface” is common for that kind of UI though, the author didn't invent it. It's a shame that NodeJS chose such a common word as its name, but “node” can't be erased from CS just because NodeJS exists (one would have to remove graph theory, cluster grapes, many UIs concepts [tree UI, nodes UI, ...], many 3D jargon, etc.).
“Node-based interface” is common for that kind of UI though, the author didn't invent it. It's a shame that NodeJS chose such a common word as its name, but “node” can't be erased from CS just because NodeJS exists (one would have to remove graph theory, cluster grapes, many UIs concepts [tree UI, nodes UI, ...], many 3D jargon, etc.).