If they are using Docker anyways and thus able to use any command line tools they want, I can't help but wonder how fast 'awk' or even a Perl script would have

If they are using Docker anyways and thus able to use any command line tools they want, I can't help but wonder how fast 'awk' or even a Perl script would have given them what they need... I have seen convoluted stuff done in JS when a few shell commands would have taken care of things, before.