fs read file line by line

node read file line

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();

Posted by: Guest on May-17-2021

Source

const fs = require('fs'); fs.readFile('file.txt', function(err, data) { if(err) throw err; const arr = data.toString().replace(/\r\n/g,'\n').split('\n'); for(let i of arr) { console.log(i); } });

const readline = require('readline'); const readInterface = readline.createInterface({ input: fs.createReadStream('name.txt'), output: process.stdout, console: false }); for await (const line of readInterface) { console.log(line); } //or readInterface.on('line', function(line) { console.log(line); });

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