/**

* Checks if a stack value for `key` exists.
*
* @private
* @name has
* @memberOf Stack
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/

function stackHas(key) {

return this.__data__.has(key);

}

module.exports = stackHas;