feat(nextjs): Default to VERCEL_ENV as environment

Author: Luca Forstner

packages/nextjs/src/client/index.ts

@@ -38,7 +38,9 @@ const globalWithInjectedValues = global as typeof global & {
 export function init(options: BrowserOptions): void {
   applyTunnelRouteOption(options);
   buildMetadata(options, ['nextjs', 'react']);
-  options.environment = options.environment || process.env.NODE_ENV;
+
+  options.environment = options.environment || process.env.NEXT_PUBLIC_VERCEL_ENV || process.env.NODE_ENV;
+
   addClientIntegrations(options);
 
   reactInit(options);

packages/nextjs/src/edge/index.ts

@@ -46,9 +46,8 @@ export function init(options: EdgeOptions = {}): void {
     }
   }
 
-  if (options.environment === undefined && process.env.SENTRY_ENVIRONMENT) {
-    options.environment = process.env.SENTRY_ENVIRONMENT;
-  }
+  options.environment =
+    options.environment || process.env.SENTRY_ENVIRONMENT || process.env.VERCEL_ENV || process.env.NODE_ENV;
 
   if (options.autoSessionTracking === undefined && options.dsn !== undefined) {
     options.autoSessionTracking = true;

packages/nextjs/src/server/index.ts

@@ -79,7 +79,10 @@ export function init(options: NodeOptions): void {
   }
 
   buildMetadata(options, ['nextjs', 'node']);
-  options.environment = options.environment || process.env.NODE_ENV;
+
+  options.environment =
+    options.environment || process.env.SENTRY_ENVIRONMENT || process.env.VERCEL_ENV || process.env.NODE_ENV;
+
   addServerIntegrations(options);
   // Right now we only capture frontend sessions for Next.js
   options.autoSessionTracking = false;