nodejs: read and write file: use fs and promise
const { readFile, writeFile} = require('fs').promises; const start = async () => { try { const first = await readFile('./content/first.txt', 'utf8'); const second = await readFile('./content/second.txt', 'utf8'); // Write file await writeFile('./content/result_mind_grenade.txt', `THIS IS AWESOME : ${first} ${second}`, { flag: 'a' }); console.log(first); console.log(second); } catch (error) { console.log(error); } } start();