finally a good copilot suggestion

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Aviv Keller <me@aviv.sh>

Author: avivkeller

apps/site/next.constants.mjs

@@ -23,6 +23,15 @@ export const VERCEL_ENV = process.env.VERCEL_ENV || undefined;
  */
 export const VERCEL_REGION = process.env.VERCEL_REGION || undefined;
 
+/**
+ * This constant determines if the current environment is NOT a Vercel runtime environment.
+ *
+ * The logic is as follows:
+ * - If we are NOT in a development environment (`!IS_DEV_ENV`) AND:
+ *   - Vercel environment variable (`VERCEL_ENV`) is defined but the Vercel region (`VERCEL_REGION`) is NOT defined, OR
+ *   - Vercel environment variable (`VERCEL_ENV`) is NOT defined at all.
+ * This helps identify cases where the application is running outside of Vercel's runtime environment.
+ */
 export const IS_NOT_VERCEL_RUNTIME_ENV =
   (!IS_DEV_ENV && VERCEL_ENV && !VERCEL_REGION) || (!IS_DEV_ENV && !VERCEL_ENV);