Require NODE_ENV to be set

Co-authored-by: Kent C. Dodds <me+github@kentcdodds.com>

Author: cursoragent

app/utils/env.server.ts

@@ -4,9 +4,7 @@ const nonEmptyString = z.string().trim().min(1)
 
 const schemaBase = z.object({
 		NODE_ENV: z
-			.enum(['production', 'development', 'test'] as const)
-			.optional()
-			.default('development'),
+		.enum(['production', 'development', 'test'] as const),
 		PORT: nonEmptyString,
 		MOCKS: z.enum(['true', 'false']).optional(),
 		PLAYWRIGHT_TEST_BASE_URL: z.string().trim().optional(),