I should have known when the first package was left-justify, but I read until karen before I realized it must be fiction

Would explain why most of the download traffic comes from the Middle East :)

i think i might be missing some reference/joke

obviously it's referencing the left-pad incident[0], and to 'justify' text is another kind of text manipulation[1]; but with the more common definition, i guess it's a joke about justifying something? The Left? idk

[0] https://en.wikipedia.org/wiki/Npm_left-pad_incident

[1] https://en.wikipedia.org/wiki/Typographic_alignment#Flush_le...

No, the meaning is straightforward. It's a joke because the audience is assumed to write in a left-to-right script (such as English), such that text is already left-justified by default.