diff --git a/src/Updux.js b/src/Updux.js
index 2a68784..98b5a99 100644
--- a/src/Updux.js
+++ b/src/Updux.js
@@ -7,6 +7,12 @@ function isActionGen(action) {
     return typeof action === 'function' && action.type;
 }
 
+/**
+ * Updux configuration object
+ * @typedef {Object} Updux config
+ * @property {Object} actions - Actions to be made available to the updux.
+ */
+
 export class Updux {
     #localInitial = {};
     #subduxes = {};