code: function assignInDefaults(objValue, srcValue, key, object) {
  	  if (objValue === undefined ||
  	      (eq$3(objValue, objectProto$7[key]) && !hasOwnProperty$6.call(object, key))) {
  	    return srcValue;
  	  }
  	  return objValue;
  	}
docs: Used by `_.defaults` to customize its `_.assignIn` use.
  
  @private
  @param {*} objValue The destination value.
  @param {*} srcValue The source value.
  @param {string} key The key of the property to assign.
  @param {Object} object The parent object of `objValue`.
  @returns {*} Returns the value to assign.