lodash/_mapSet.js

define(['./_Map', './_assocSet', './_hashSet', './_isKeyable'], function(Map, assocSet, hashSet, isKeyable) {

  /**
   * Sets the map `key` to `value`.
   *
   * @private
   * @name set
   * @memberOf MapCache
   * @param {string} key The key of the value to set.
   * @param {*} value The value to set.
   * @returns {Object} Returns the map cache instance.
   */
  function mapSet(key, value) {
    var data = this.__data__;
    if (isKeyable(key)) {
      hashSet(typeof key == 'string' ? data.string : data.hash, key, value);
    } else if (Map) {
      data.map.set(key, value);
    } else {
      assocSet(data.map, key, value);
    }
    return this;
  }

  return mapSet;
});