const f = new Function('',
  'const recursiveFunction= (x) =>{' +
    'if (x <= 0) return 0;' +
 
    'const value=recursiveFunction(x-1);' +
 
    'return 1 + value;' +
  '};' +
  'return recursiveFunction(400);'
);
 
const g = new Function('',
  'const recursiveFunction= (x) =>{' +
    'if (x <= 0) return 0;' +
 
    'const value=recursiveFunction(x-1);' +
 
    'return 1 + value;' +
  '};' +
  'return recursiveFunction(500);'
)
 
var stack = [1000000];
 
var y = 0;
 
while (stack.length){
  let x = stack.pop();
 
  if (x == 0){
    print('Stack result for 1,000,000: ' + y);
    continue;
  }
 
  y = y + 1;
  stack.push(x - 1);
}
 
print('Recursive result for 400: ' + f());
print('Recursive result for 500: ' + g()); // Oops... "prog.js:5:0 InternalError: too much recursion"

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