Validate type of input

typeCheck.js

export const isDate = date => {
  const dateTest = new Date(date);
  return (
    dateTest && Object.prototype.toString.call(dateTest) === '[object Date]' && !isNaN(dateTest)
  );
};

export const isNumber = value => {
  return typeof value === 'number' && !Number.isNaN(value);
};

export const isEmpty = value => {
  return (
    value == null ||
    (typeof value === 'object' && Object.keys(value).length === 0) ||
    (typeof value === 'string' && value.trim().length === 0)
  );
};