10-fs-sync.js

const { readFileSync, writeFileSync } = require('fs');

const first = readFileSync('./content/first.txt', 'utf8')

const second = readFileSync('./content/second.txt', 'utf8')


writeFileSync('./content/result-sync.txt', `Here is the result ${first},${second}`, { flag: 'a' })
console.log(first, second)