gistfile1.txt

$ cat app.ts
const rl = require('readline').createInterface({
    input: process.stdin,
});

rl.on('line', (n: number) => {
    const m = n + 1;
    console.log(`m = ${m}`);
});

$ ts-node app.ts
1
m = 11
2
m = 21
3
m = 31
fsdafjasdfasd
m = fsdafjasdfasd1