diff --git a/packages/plugin-fsapp/src/index.ts b/packages/plugin-fsapp/src/index.ts
index 5123d0235c..024f8f05ce 100644
--- a/packages/plugin-fsapp/src/index.ts
+++ b/packages/plugin-fsapp/src/index.ts
@@ -6,6 +6,11 @@
  */
 
 import semver from 'semver';
+import glob from 'glob';
+import * as babel from '@babel/core';
+import {types as t} from '@babel/core';
+import {parse} from '@babel/parser';
+import traverse from '@babel/traverse';
 import {
   definePlugin,
   fs,
@@ -15,6 +20,61 @@ import {
   type PrebuildOptions,
 } from '@brandingbrand/code-cli-kit';
 
+async function validateEnvFiles(baseDir: string): Promise<any[]> {
+  const pattern = path.join(baseDir, '**', 'env.*.ts');
+  const files = glob.sync(pattern, {ignore: '**/node_modules/**'});
+
+  const results = [];
+
+  for (const file of files) {
+    const code = await fs.readFile(file, 'utf-8');
+    const ast = parse(code, {
+      sourceType: 'module',
+      plugins: ['typescript'],
+    });
+
+    let hasDefaultExport = false;
+    let hasDefineEnvImport = false;
+
+    traverse(ast, {
+      ExportNamedDeclaration(path) {
+        const declaration = path.node.declaration;
+        if (
+          t.isTypeAlias(declaration) ||
+          t.isInterfaceDeclaration(declaration) ||
+          t.isTSTypeAliasDeclaration(declaration) ||
+          t.isTSInterfaceDeclaration(declaration)
+        ) {
+          // Allows type exports
+          return;
+        }
+      },
+      ExportDefaultDeclaration() {
+        hasDefaultExport = true;
+      },
+      ImportDeclaration(path) {
+        if (
+          path.node.source.value === '@brandingbrand/code-cli-kit' &&
+          path.node.specifiers.some(
+            specifier =>
+              t.isImportSpecifier(specifier) &&
+              t.isIdentifier(specifier.imported) &&
+              specifier.imported.name === 'defineEnv',
+          )
+        ) {
+          hasDefineEnvImport = true;
+        }
+      },
+    });
+
+    if (hasDefaultExport && hasDefineEnvImport) {
+      results.push(file);
+    }
+  }
+
+  return results;
+}
+
 /**
  * Helper function to validate and process environment files.
  * @param {string} envDir - The path to the environment directory.