lodash/_stackSet.js

define(['./_ListCache', './_MapCache'], function(ListCache, 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 cache = this.__data__;
    if (cache instanceof ListCache && cache.__data__.length == LARGE_ARRAY_SIZE) {
      cache = this.__data__ = new MapCache(cache.__data__);
    }
    cache.set(key, value);
    return this;
  }

  return stackSet;
});