Day 3:Try,Catch and Finally.js

'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
});

process.stdin.on('end', _ => {
    inputString = inputString.trim().split('\n').map(string => {
        return string.trim();
    });
    
    main();    
});

function readLine() 
{
    return inputString[currentLine++];
}

/*
 * Complete the reverseString function
 * Use console.log() to print to stdout.
 */
function reverseString(s) 
{
    if (typeof s != "string") 
     {   
        console.log("s.split is not a function")
        console.log(s);
     }       
    else
    {             
        var newString = "";
        for (var i = s.length - 1; i >= 0; i--) 
        {   
            newString += s[i];
        }
        console.log(newString);
    }
}


function main() 
{
    const s = eval(readLine());
    
    reverseString(s);
}