Ignore comment lines for the from_line value

Summary

I would like it if the from_line option could ignore comment lines when determining the line number.

Motivation

I receive a CSV structured like this:

// Some
// Number of
// Comments
thing1=value1
thing2=value2
header1,header2,header3
value,value,value
...

Where there's some arbitrary number of comment lines at the top, followed by exactly 2 lines of unrelated data that I need to skip before the actual csv content begins. The exact starting line can vary.

Alternative

I'm fetching the csv using got.stream and piping it into parse, then processing rows using for await. I might be able to add some middleware to filter out the unwanted rows before it goes to the parser but I'm not sure the best way to approach that.

Draft

Ideally I would like to be able to use {comment: '//', from_line: 3} to skip over all comments as well as the 2 unrelated lines. I.e. it would start parsing from 3rd non-comment line.

Start by reading how the parser handles the comment and from_line options, including streaming input from got.stream and row processing with for await. Confirm that {comment: '//', from_line: 3} begins parsing at the third non-comment line while still skipping the two unrelated lines, then cover the behavior with parser tests.