Node.JS Program Crashes on open

Whenever I open my Node.JS program it decides to close on enter. Could anyone help me, I would appreciate it.

const request = require("request");
function nCheck() {
  let output = "";
  let size = "4"; //size of name to check for!
  let possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
  for(let i = 0; i < size; i++) {
    output += possible.charAt(Math.floor(Math.random() * possible.length));
  }
  request(`https://www.roblox.com/UserCheck/DoesUsernameExist?username=${output}`, function(error, responce, body) {
    if(error) return console.log("WARNING: SOMETHING WENT WRONG!");
    let name = JSON.parse(body);
    if(name.success === true) {
      console.log(`${output} is **[TAKEN]**`);
    } else if(name.success === false) {
      console.log(`${output} is --[USEABLE]--`);
    }
  });
  setTimeout(nCheck, 1);
};
setTimeout(nCheck, 1);

via LyfeRapz