luhn-generator/update/node_modules/eslint/lib/util/unicode/is-regional-indicator-symbol.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

/**
 * @author Toru Nagashima <https://github.com/mysticatea>
 */
"use strict";

/**
 * Check whether a given character is a regional indicator symbol.
 * @param {number} code The character code to check.
 * @returns {boolean} `true` if the character is a regional indicator symbol.
 */
module.exports = function isRegionalIndicatorSymbol(code) {
    return code >= 0x1F1E6 && code <= 0x1F1FF;
};