print range of numbers promises

gistfile1.txt

function printNumbers(a, b) {
 if (a > b || typeof a !== 'number' || typeof b !== 'number') {
      throw 'Incorrect arguments';
 }
 for(let i = a, counter = 0, promises = []; i <= b; i++, counter++) {
 	promises.push(
  		new Promise((resolve, reject) => {
    			setTimeout(() => {
        			resolve(i)
      		}, 1000 * counter)
    		}
  	));
  if (i == b) {
  	return promises;
  }
 }
}	

printNumbers(1, 5)
	.forEach(p => p.then(console.log));