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						- var getMapData = require('./_getMapData');
 - 
 - /**
 -  * 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`.
 -  */
 - function mapCacheHas(key) {
 -   return getMapData(this, key).has(key);
 - }
 - 
 - module.exports = mapCacheHas;
 
 
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