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						- /**
 -  * Checks if a `cache` value for `key` exists.
 -  *
 -  * @private
 -  * @param {Object} cache The cache to query.
 -  * @param {string} key The key of the entry to check.
 -  * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 -  */
 - function cacheHas(cache, key) {
 -   return cache.has(key);
 - }
 - 
 - module.exports = cacheHas;
 
 
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