Add JSDoc

Author: ArthurClemens

README.md

@@ -15,6 +15,7 @@ Simple undo manager to provide undo and redo actions in JavaScript applications.
   - [hasRedo](#hasredo)
   - [setCallback](#setcallback)
   - [getIndex](#getindex)
+  - [getCommands](#getcommands)
 - [Use with CommonJS](#use-with-commonjs)
 - [Use with RequireJS](#use-with-requirejs)
 
@@ -142,7 +143,7 @@ const hasRedo = undoManager.hasRedo();
 
 ### setCallback
 
-Get notified on changes.
+Get notified on changes. Pass a function to be called on undo and redo actions.
 
 ```js
 undoManager.setCallback(myCallback);
@@ -156,6 +157,14 @@ Returns the index of the actions list.
 const index = undoManager.getIndex();
 ```
 
+### getCommands
+
+Returns the list of queued commands.
+
+```js
+const commands = undoManager.getCommands();
+```
+
 ## Use with CommonJS
 
 ```bash

lib/undomanager.js

@@ -27,6 +27,13 @@ https://github.com/ArthurClemens/JavaScript-Undo-Manager
       // functions
       execute;
 
+    /**
+     * Executes a single command.
+     * @property {object} command        - Command
+     * @property {function} command.undo - Undo function
+     * @property {function} command.redo - Redo function
+     * @property {string} action         - "undo" or "redo"
+     */
     execute = function (command, action) {
       if (!command || typeof command[action] !== 'function') {
         return this;
@@ -40,9 +47,12 @@ https://github.com/ArthurClemens/JavaScript-Undo-Manager
     };
 
     return {
-      /*
-      Add a command to the queue.
-      */
+      /**
+       * Adds a command to the queue.
+       * @property {object} command        - Command
+       * @property {function} command.undo - Undo function
+       * @property {function} command.redo - Redo function
+       */
       add: function (command) {
         if (isExecuting) {
           return this;
@@ -66,16 +76,17 @@ https://github.com/ArthurClemens/JavaScript-Undo-Manager
         return this;
       },
 
-      /*
-      Pass a function to be called on undo and redo actions.
-      */
+      /** 
+       * Pass a function to be called on undo and redo actions.
+       * @property {function} callbackFunc - Callback function
+       */
       setCallback: function (callbackFunc) {
         callback = callbackFunc;
       },
 
-      /*
-      Perform undo: call the undo function at the current index and decrease the index by 1.
-      */
+      /**
+       * Performs undo: call the undo function at the current index and decrease the index by 1.
+       */
       undo: function () {
         let command = commands[index];
         if (!command) {
@@ -89,9 +100,9 @@ https://github.com/ArthurClemens/JavaScript-Undo-Manager
         return this;
       },
 
-      /*
-      Perform redo: call the redo function at the next index and increase the index by 1.
-      */
+      /**
+       * Performs redo: call the redo function at the next index and increase the index by 1.
+       */
       redo: function () {
         let command = commands[index + 1];
         if (!command) {
@@ -105,9 +116,9 @@ https://github.com/ArthurClemens/JavaScript-Undo-Manager
         return this;
       },
 
-      /*
-      Clear the memory, losing all stored states. Reset the index.
-      */
+      /**
+       * Clears the memory, losing all stored states. Resets the index.
+       */
       clear: function () {
         let prev_size = commands.length;
 
@@ -119,24 +130,44 @@ https://github.com/ArthurClemens/JavaScript-Undo-Manager
         }
       },
 
+      /**
+       * Tests if any undo actions exist.
+       * @returns {boolean}
+       */
       hasUndo: function () {
         return index !== -1;
       },
 
+      /**
+       * Tests if any redo actions exist.
+       * @returns {boolean}
+       */
       hasRedo: function () {
         return index < commands.length - 1;
       },
 
+      /**
+       * Returns the list of queued commands.
+       * @returns {array}
+       */
       getCommands: function () {
         return commands;
       },
 
+      /**
+       * Returns the index of the actions list.
+       * @returns {number}
+       */
       getIndex: function () {
         return index;
       },
 
-      setLimit: function (l) {
-        limit = l;
+      /**
+       * Sets the maximum number of undo steps. Default: 0 (unlimited).
+       * @property {number} max - Maximum number of undo steps
+       */
+      setLimit: function (max) {
+        limit = max;
       },
     };
   };