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var ListCache = require('./_ListCache'),    Map = require('./_Map'),    MapCache = require('./_MapCache');
/** Used as the size to enable large array optimizations. */var LARGE_ARRAY_SIZE = 200;
/** * Sets the stack `key` to `value`. * * @private * @name set * @memberOf Stack * @param {string} key The key of the value to set. * @param {*} value The value to set. * @returns {Object} Returns the stack cache instance. */function stackSet(key, value) {  var data = this.__data__;  if (data instanceof ListCache) {    var pairs = data.__data__;    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {      pairs.push([key, value]);      this.size = ++data.size;      return this;    }    data = this.__data__ = new MapCache(pairs);  }  data.set(key, value);  this.size = data.size;  return this;}
module.exports = stackSet;