local-storage.js -- Add ability to 'get all keys' in local storage

docs/local-storage.md

@@ -44,6 +44,12 @@ Or delete everything stored in the namespace:
 delete storage :: #0FBD8C
 ```
 
+If you ever loose track of what variables you previously set in storage, you can use the below block. It will return an array of all variables (or 'keys') in storage.
+
+```scratch
+(all keys from storage :: #0FBD8C)
+```
+
 ## Performance
 
 The local storage extension is inevitably slower than regular variables.

extensions/local-storage.js

@@ -13,7 +13,7 @@
   }
 
   const getNamespace = () =>
     Scratch.vm.runtime.extensionStorage["localstorage"]?.namespace;
 
   /**
    * @param {string} newNamespace
@@ -199,6 +199,12 @@
               },
             },
           },
+          {
+            opcode: "getAll",
+            blockType: Scratch.BlockType.REPORTER,
+            text: Scratch.translate("all keys from storage"),
+            disableMonitor: true,
+          },
           {
             opcode: "removeAll",
             blockType: Scratch.BlockType.COMMAND,
@@ -258,6 +264,14 @@
       saveToLocalStorage();
     }
 
+    getAll() {
+      if (!validNamespace()) {
+        return "";
+      }
+
+      return JSON.stringify(Object.keys(namespaceValues));
+    }
+
     removeAll() {
       if (!validNamespace()) {
         return "";