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