Reading a file line by line in JavaScript and Node.js

While writing a small Node.js utility in JavaScript, I needed to read a text file from disk, line by line, into a string array. I wrote a small utility function to this task, which is async, returning a Promise.

Usage is pretty straightforward:

const readLines = require('./readLines');

async function foo() {
  const lines = await readLines('myFile.txt');
  console.log(lines.length);
}