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/** Used for native method references. */
var objectProto = Object.prototype;
/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;
/**
* Checks if a cached value for `key` exists.
*
* @private
* @name has
* @memberOf _.memoize.Cache
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function mapHas(key) {
return key != '__proto__' && hasOwnProperty.call(this.__data__, key);
}
module.exports = mapHas;
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