feat: declare version

Author: tenphi

src/version.ts

@@ -5,16 +5,17 @@ interface Window {
   };
 }
 
-if (window.CubeUIKit?.version) {
+const version = '__UIKIT_VERSION__';
+
+// Ensure CubeUIKit is defined on window in a way bundlers recognize
+window.CubeUIKit = window.CubeUIKit || { version };
+
+// Check for multiple versions
+if (window.CubeUIKit.version && window.CubeUIKit.version !== version) {
   console.error('More than one version of CubeUIKit is loaded', {
-    loadedVersions: [window.CubeUIKit.version, '__UIKIT_VERSION'],
+    loadedVersions: [window.CubeUIKit.version, version],
   });
 } else {
-  if (!window.CubeUIKit || !Array.isArray(window.CubeUIKit)) {
-    window.CubeUIKit = {
-      version: '__UIKIT_VERSION__',
-    };
-  } else {
-    window.CubeUIKit.version = '__UIKIT_VERSION__';
-  }
+  // Set version if not already set
+  window.CubeUIKit.version = version;
 }