If you're a real Linux user, you can build such a system yourself quite trivially by combining xargs, sed and grep. You see, nodejs is the pumpkin spice latte of languages. I, a sophisticate, insist upon the fine single malt whiskey of Perl, paired with a delectable shell script charcuterie. Anything less is the fare of unsophisticated lusers, who are often (purely coincidentally) women or other outgroups.
Was this supposed to be a command line tool used in a Linux environment, where grep, sed, etc. are already available? Doesn't excuse their behavior, not at all, but I can see exactly how that might provoke their derision. The mistake was quite worse than I thought. But it is foolish to be provoked by the foolishness or ignorance of others. They could have remained silent, or could have reached out constructively (e.g. by introducing them to those widely distributed set of really powerful command line tools).
Or is there some JavaScript additional functionality that I'm missing?
I don't care if they're not 100% feature complete, the fact I can remember how to use them for my simple everday tasks (searching, finding/replacing across many files) without needing to consult a manpage or search online for answers is enough.
I used grep daily for years and _still_ it didn't feel like it made sense. I remember reading about Ack (https://beyondgrep.com/) some time in 2009-2010 , installing it and switching over entirely within about five minutes.
Modern sed:
Modern grep: