OperationCode/front-end

/**
 * Functions are being exported using module.exports, so we can use the methods in
 * node.js and ES6 client side.
 * */

/**
 * @description Capitalize the first letter in a string
 *
 * @export
 * @param {string} someString
 * @returns {string} Returns string with the first character capitalized
 */
function capitalizeFirstLetter(someString = '') {
  const stringCopy = [...someString].join('');

  return stringCopy.charAt(0).toUpperCase() + stringCopy.slice(1);
}

/**
 * @description Return undefined if passed string is empty, otherwise pass the string thru
 *
 * @export
 * @param {string} someString
 * @returns {(undefined|string)} undefined or string
 */
function coerceEmptyStringToUndefined(someString) {
  if (someString === '') {
    return undefined;
  }

  return someString;
}

module.exports = {
  capitalizeFirstLetter,
  coerceEmptyStringToUndefined,
};