Validating Integer Form Inputs Before Updating State

import { ref } from 'vue';
 
const quantity = ref(1);
const inputError = ref('');
 
function updateQuantity(rawInput) {
  const parsedNumber = Number(rawInput);
 
  if (typeof rawInput !== 'string' && typeof rawInput !== 'number') {
    inputError.value = 'Invalid input type provided.';
    return;
  }
 
  if (!Number.isInteger(parsedNumber) || parsedNumber <= 0) {
    inputError.value = 'Please provide a positive whole number.';
    return;
  }
 
  inputError.value = '';
  quantity.value = parsedNumber;
}