1  /**
 2   * Checks if a `cache` value for `key` exists.
 3   *
 4   * @private
 5   * @param {Object} cache The cache to query.
 6   * @param {string} key The key of the entry to check.
 7   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 8   */
 9  function cacheHas(cache, key) {
10    return cache.has(key);
11  }
12  
13  module.exports = cacheHas;