feat(types): add DataBus system with auto-generated type declarations

src/startup_scripts/DataBus.js

@@ -0,0 +1,62 @@
+/**
+ * Creates a simple data-exchange bus for sharing values across KubeJS scripts.
+ * Provides export/import functionality similar to TypeScript modules with type hints.
+ *
+ * @returns {DataBus}
+ */
+function createDataBus() {
+    /**
+     * @type {Map<string, any>}
+     */
+    const dataMap = new Map();
+
+    /**
+     * @type {DataBus}
+     */
+    const bus = {
+        /**
+         * Export a value under a given name.
+         * @template T
+         * @param {string} name - Export identifier
+         * @param {T} value - Value to export
+         */
+        export: function (name, value) {
+            dataMap.set(name, value);
+        },
+
+        /**
+         * Import a previously exported value.
+         * @template T
+         * @param {string} name - Export identifier
+         * @returns {T} The exported value
+         * @throws {Error} If the export does not exist.
+         */
+        import: function (name) {
+            if (!dataMap.has(name)) {
+                throw new Error(`DataBus: export "${name}" not found`);
+            }
+            return dataMap.get(name);
+        },
+
+        /**
+         * Check if an export exists.
+         * @param {string} name - Export identifier
+         * @returns {boolean}
+         */
+        hasExport: function (name) {
+            return dataMap.has(name);
+        },
+
+        /**
+         * List all available export names.
+         * @returns {string[]}
+         */
+        listExports: function () {
+            return Array.from(dataMap.keys());
+        },
+    };
+
+    return bus;
+}
+
+global["dataBus"] = createDataBus();