luhn-generator/update/node_modules/eslint-plugin-react/lib/util/isFirstLetterCapitalized.js

A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

'use strict';

/**
 * Check if the first letter of a string is capitalized.
 * @param {String} word String to check
 * @returns {Boolean} True if first letter is capitalized.
 */
function isFirstLetterCapitalized(word) {
  if (!word) {
    return false;
  }
  const firstLetter = word.charAt(0);
  return firstLetter.toUpperCase() === firstLetter;
}

module.exports = isFirstLetterCapitalized;