createEnum.js

export const createEnum = (keys, values, isUnique) => {
  if (!keys) return {};

  if (values === undefined || !Array.isArray(values)) {
    if (Array.isArray(keys)) {
      const enumObj = {};
      for (const key of keys) {
        enumObj[key] = isUnique ? Symbol(key) : key;
      }
      return Object.freeze(enumObj);
    }

    if (typeof keys === 'object') {
      return Object.freeze(keys);
    }

    throw new Error('Invalid keys');
  }

  if (Array.isArray(keys) && Array.isArray(values)) {
    if (keys.length !== values.length) {
      throw new Error('Keys and values must be the same length');
    }

    const enumObj = {};
    for (let i = 0; i < keys.length; ++i) {
      enumObj[keys[i]] = values[i];
    }
    return Object.freeze(enumObj);
  }
};