readline() is not defined about zx

[quantumsheep]

You might want to use question() as a substitute:

#!/usr/bin/env zx

const a = await question('');
const b = await question('');
const sum = a + b;
console.log("Sum is: " + sum);

Also considering your code, you may want convert a and b to numbers as a and b will be strings.

[Siddhant-K-code]

Also considering your code, you may want convert a and b to numbers as a and b will be strings.

yeah, that's why it will be good if we can take integers as input also.