type flag

Author: raju-opti

.github/copilot-instructions-test.md

@@ -31,4 +31,6 @@
  * flag and all associated checks can be removed from the codebase.
  */
 
-export const holdout = () => true;
+export const holdout = () => false as const;
+
+export type IfActive<T extends () => boolean, Y, N = unknown> = ReturnType<T> extends true ? Y : N;

.github/copilot-instructions.md

@@ -26,6 +26,7 @@ import {
 } from '../shared_types';
 import { DecisionSource } from '../utils/enums';
 import { Nullable } from '../utils/type';
+import { holdout, IfActive } from '../feature_toggle';
 
 export type UserEventListenerPayload = {
   userId: string;
@@ -34,7 +35,7 @@ export type UserEventListenerPayload = {
 
 export type ActivateListenerPayload = UserEventListenerPayload & {
   experiment: Experiment | null;
-  holdout: Holdout | null;
+  holdout: IfActive<typeof holdout, Holdout | null>;
   variation: Variation | null;
   logEvent: LogEvent;
 }