importgetMapDatafrom'./_getMapData.js'; /** * Checks if a map value for `key` exists. * * @private * @name has * @memberOf MapCache * @param {string} key The key of the entry to check. * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. */functionmapCacheHas(key){returngetMapData(this, key).has(key);} exportdefault mapCacheHas;