Read a file one line at a time in node.js?

Question

I am trying to read a large file one line at a time. I found a question on Quora that dealt with the subject but I\'m missing some connections to make the whole thing fit to

Answer 1

Update in 2019

An awesome example is already posted on official Nodejs documentation. here

This requires the latest Nodejs is installed on your machine. >11.4

const fs = require('fs');
const readline = require('readline');

async function processLineByLine() {
  const fileStream = fs.createReadStream('input.txt');

  const rl = readline.createInterface({
    input: fileStream,
    crlfDelay: Infinity
  });
  // Note: we use the crlfDelay option to recognize all instances of CR LF
  // ('\r\n') in input.txt as a single line break.

  for await (const line of rl) {
    // Each line in input.txt will be successively available here as `line`.
    console.log(`Line from file: ${line}`);
  }
}

processLineByLine();