Declare lineArray further down in the code

[c3ho]

lFinder/bin/index.js

Line 40 in 59729ee

lineArray = data.toString().split("\n");

I noticed this line is only used here, you can declare it here instead of up top since you're not appending to it or anything.
Otherwise you're initializing it as an empty array only to overwrite it with the value from your .filter().

const lineArray = data.toString().split("\n");

[c3ho]

Sorry see issue #5 first before fixing this one