Nodejs read buffer line by line. source: https://stackoverflow.com/questions/36896841/read-strings-line-by-line-from-buffer-instance-in-node-js-module

read.js

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

const buf = fs.readFileSync('./1.txt');

var bufferStream = new stream.PassThrough();
bufferStream.end(buf);

var rl = readline.createInterface({
  input: bufferStream,
});

rl.on('line', function (line) {
  if (line.includes('report_id')) {
    console.log('content = ' + line);
  }
});