1  var getMapData = require('./_getMapData');
 2  
 3  /**
 4   * Checks if a map value for `key` exists.
 5   *
 6   * @private
 7   * @name has
 8   * @memberOf MapCache
 9   * @param {string} key The key of the entry to check.
10   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
11   */
12  function mapCacheHas(key) {
13    return getMapData(this, key).has(key);
14  }
15  
16  module.exports = mapCacheHas;