const fs = require('fs'); const promisify = require('util').promisify; const readFile = promisify(fs.readFile); async function run() { let r1 = await readFile('./1.txt', 'utf8'); let r2 = await readFile('./2.txt', 'utf8'); let r3 = await readFile('./3.txt', 'utf8'); console.log(r1); console.log(r2); console.log(r3); } run();
