Added the already used @ungap/structured-clone/json to the export utilities

Author: WebReflection

docs/README.md

@@ -379,7 +379,8 @@ The module is registered within the interpreter as *JS* module and it offers var
 | currentScript   | `from polyscript import currentScript`   | it's an explicit, always correct, reference to the current node running the generic script code. |
 | js_modules      | `from polyscript import js_modules`      | described in the [Extra config Features](#extra-config-features) part. |
 | lazy_py_modules | `from polyscript import lazy_py_modules` | allows, only in *Python* related interpreters, and without needing static config entries, to import lazily any available module.
-| storage | `from polyscript import storage` | a utility to instantiate a named [idb-map](https://github.com/WebReflection/idb-map/#readme) that can be consumed synchronously.
+| storage         | `from polyscript import storage`         | a utility to instantiate a named [idb-map](https://github.com/WebReflection/idb-map/#readme) that can be consumed synchronously.
+| JSON            | `from polyscript import JSON`            | a utility to stringify/parse more complex or recursive data via [@ungap/structured-clone/json](https://github.com/ungap/structured-clone/#readme).
 
 
 #### lazy_py_modules

docs/index.js

@@ -1,3 +1,4 @@
+import * as JSON from '@ungap/structured-clone/json';
 import IDBMapSync from '@webreflection/idb-map/sync';
 import { dedent } from '../utils.js';
 import { io } from './_io.js';
@@ -17,6 +18,7 @@ export const registerJSModule = (interpreter, name, value) => {
             await storage.sync();
             return storage;
         };
+        value.JSON = JSON;
     }
     interpreter.registerJsModule(name, value);
 };

docs/index.js.map

@@ -91,6 +91,6 @@
         "to-json-callback": "^0.1.1"
     },
     "worker": {
-        "blob": "sha256-y/qSAmO9mTFoVI7HFnSREEX6z7iKiMeZRkWrNHB3ogg="
+        "blob": "sha256-aKFI8LDFH/HzDVvL04EsywRyTDQpQV+n5vYBrEVA35I="
     }
 }