fix: Only inject spotlight env var when set

Author: BYK

packages/astro/src/integration/index.ts

@@ -180,13 +180,16 @@ export const sentryAstro = (options: SentryOptions = {}): AstroIntegration => {
         }
 
         // Inject SENTRY_SPOTLIGHT env var for client bundles (fallback for manual setup without PUBLIC_ prefix)
-        updateConfig({
-          vite: {
-            define: {
-              'import.meta.env.SENTRY_SPOTLIGHT': JSON.stringify(process.env.SENTRY_SPOTLIGHT || ''),
+        // Only add if we have a value to inject and the SDK is enabled
+        if (process.env.SENTRY_SPOTLIGHT && sdkEnabled.client) {
+          updateConfig({
+            vite: {
+              define: {
+                'import.meta.env.SENTRY_SPOTLIGHT': JSON.stringify(process.env.SENTRY_SPOTLIGHT),
+              },
             },
-          },
-        });
+          });
+        }
 
         const isSSR = config && (config.output === 'server' || config.output === 'hybrid');
         const shouldAddMiddleware = sdkEnabled.server && autoInstrumentation?.requestHandler !== false;

packages/nuxt/src/module.ts

@@ -108,12 +108,15 @@ export default defineNuxtModule<ModuleOptions>({
     addOTelCommonJSImportAlias(nuxt);
 
     // Inject SENTRY_SPOTLIGHT env var for client bundles (fallback for manual setup without VITE_ prefix)
-    nuxt.hook('vite:extendConfig', (viteConfig, env) => {
-      if (env.isClient) {
-        viteConfig.define = viteConfig.define || {};
-        viteConfig.define['import.meta.env.SENTRY_SPOTLIGHT'] = JSON.stringify(process.env.SENTRY_SPOTLIGHT || '');
-      }
-    });
+    // Only add the hook if we have a value to inject
+    if (process.env.SENTRY_SPOTLIGHT) {
+      nuxt.hook('vite:extendConfig', (viteConfig, env) => {
+        if (env.isClient) {
+          viteConfig.define = viteConfig.define || {};
+          viteConfig.define['import.meta.env.SENTRY_SPOTLIGHT'] = JSON.stringify(process.env.SENTRY_SPOTLIGHT);
+        }
+      });
+    }
 
     const pagesDataTemplate = addTemplate({
       filename: 'sentry--nuxt-pages-data.mjs',

packages/sveltekit/src/vite/sentryVitePlugins.ts

@@ -51,8 +51,10 @@ export async function sentrySvelteKit(options: SentrySvelteKitPluginOptions = {}
 
   const sentryPlugins: Plugin[] = [];
 
-  // Add spotlight plugin unconditionally for zero-config Spotlight support
-  sentryPlugins.push(makeSpotlightDefinePlugin());
+  // Add spotlight plugin for zero-config Spotlight support (only if env var is set)
+  if (process.env.PUBLIC_SENTRY_SPOTLIGHT || process.env.SENTRY_SPOTLIGHT) {
+    sentryPlugins.push(makeSpotlightDefinePlugin());
+  }
 
   if (mergedOptions.autoInstrument) {
     // TODO: Once tracing is promoted stable, we need to adjust this check!