It's basically equivalently easy to a python script. JavaScript and Python have almost identical semantics. I'd usuallty reach for node over python because I write JavaScript everyday at $dayjob, and I can I can do so almost without concious effort. Whereas I write python much less often, so it'd slow me down a little as I forget and have to look up details of the syntax, the names of functions, etc. I'm also much less familiar with the python library ecosystem, so I'd need to reaearch whichlibraries to use. Presumably a python developer would have this in reverse.

Bash is different. It's good for stringing toghether external commands, but rapidly becomes a mess if you need to do any complex data manipulation. Argument parsing in bash is also a pain.