diff --git a/src/Phaseolies/Console/Commands/FrontendInstallCommand.php b/src/Phaseolies/Console/Commands/FrontendInstallCommand.php
index d6b0765..bed3439 100644
--- a/src/Phaseolies/Console/Commands/FrontendInstallCommand.php
+++ b/src/Phaseolies/Console/Commands/FrontendInstallCommand.php
@@ -483,9 +483,12 @@ protected function bootstrapFile(string $cssStack, bool $typescript): string
             ? "import 'bootstrap/dist/js/bootstrap.bundle.min.js';\n"
             : '';
 
-        return $this->renderFrontendStub('entries/bootstrap.stub', [
-            'bootstrapVendorImport' => $bootstrapVendorImport,
-        ]);
+        return $this->renderFrontendStub(
+            'entries/' . ($typescript ? 'bootstrap.ts.stub' : 'bootstrap.js.stub'),
+            [
+                'bootstrapVendorImport' => $bootstrapVendorImport,
+            ]
+        );
     }
 
     /**
diff --git a/src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.js.stub b/src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.js.stub
new file mode 100644
index 0000000..df24346
--- /dev/null
+++ b/src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.js.stub
@@ -0,0 +1,9 @@
+{{ bootstrapVendorImport }}const csrfToken = document
+    .querySelector('meta[name="csrf-token"]')
+    ?.getAttribute('content');
+
+window.__DOPPAR_FRONTEND__ = {
+    ...(window.__DOPPAR_FRONTEND__ ?? {}),
+    csrfToken: csrfToken ?? null,
+    headers: csrfToken ? { 'X-CSRF-TOKEN': csrfToken } : {},
+};
diff --git a/src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.stub b/src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.ts.stub
similarity index 100%
rename from src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.stub
rename to src/Phaseolies/Console/Commands/stubs/frontend/entries/bootstrap.ts.stub
diff --git a/tests/Console/FrontendInstallCommandTest.php b/tests/Console/FrontendInstallCommandTest.php
index 3d29c0d..e7ce21a 100644
--- a/tests/Console/FrontendInstallCommandTest.php
+++ b/tests/Console/FrontendInstallCommandTest.php
@@ -105,6 +105,20 @@ public function testClientBootstrapExposesCsrfHeaderFromMetaToken(): void
         $this->assertStringNotContainsString('XMLHttpRequest.prototype', $bootstrap);
         $this->assertStringNotContainsString('X-Requested-With', $bootstrap);
         $this->assertStringContainsString("import 'bootstrap/dist/js/bootstrap.bundle.min.js';", $bootstrap);
+        $this->assertStringContainsString('declare global', $bootstrap);
+    }
+
+    public function testJavascriptBootstrapStubAvoidsTypescriptOnlySyntax(): void
+    {
+        $command = new FrontendInstallCommand();
+        $method = new \ReflectionMethod($command, 'bootstrapFile');
+
+        $bootstrap = $method->invoke($command, 'bootstrap', false);
+
+        $this->assertStringContainsString("meta[name=\"csrf-token\"]", $bootstrap);
+        $this->assertStringContainsString("headers: csrfToken ? { 'X-CSRF-TOKEN': csrfToken } : {}", $bootstrap);
+        $this->assertStringContainsString("import 'bootstrap/dist/js/bootstrap.bundle.min.js';", $bootstrap);
+        $this->assertStringNotContainsString('declare global', $bootstrap);
     }
 
     public function testVuePackageJsonUsesViteSevenCompatiblePluginVersion(): void