Revert "use a workaround"

This reverts commit 035b126.

Author: nicoloboschi

src/api/constants.ts

@@ -13,24 +13,13 @@
 // limitations under the License.
 
 import { LIB_NAME, LIB_VERSION } from '@/src/version';
-import * as path from "path";
-import * as fs from "fs";
 
 export const RAGSTACK_REQUESTED_WITH = (() => {
-  /**
-   * Do not use require() here, it will break the build in some environments such as NextJS application
-   * if @datastax/ragstack-ai is not installed (which is perfectly fine).
-   */
   try {
-    const expectedFilePath = path.join('@datastax', 'ragstack-ai', 'package.json');
-    for (const nodeModulesPath of module.paths) {
-      const fullFilePath = path.join(nodeModulesPath, expectedFilePath);
-      if (fs.existsSync(fullFilePath)) {
-        const packageJson = JSON.parse(fs.readFileSync(fullFilePath, 'utf8'))
-        return `ragstack-ai-ts/${packageJson.version}`
-      }
-    }
-    return ''
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    const ragstack = require('@datastax/ragstack-ai');
+    const version =  ragstack['RAGSTACK_VERSION'] || "?";
+    return `ragstack-ai-ts/${version}`
   } catch (e) {
     return '';
   }