Set in turbopack runtime

timneutkens · timneutkens · commit c28e54d25aca · 2025-04-07T22:02:40.000+02:00
diff --git a/turbopack/crates/turbopack-ecmascript-runtime/js/src/nodejs/runtime.ts b/turbopack/crates/turbopack-ecmascript-runtime/js/src/nodejs/runtime.ts
@@ -27,6 +27,8 @@ type SourceInfo =
       parentId: ModuleId;
     };
 
+process.env.TURBOPACK = '1';
+
 function stringifySourceInfo(source: SourceInfo): string {
   switch (source.type) {
     case SourceType.Runtime:
