fix(gofeatureflag): remove NodeJS.timeout because it fails eslint (#961)

Author: thomaspoignant

libs/providers/go-feature-flag/src/lib/data-collector-hook.ts

@@ -12,12 +12,13 @@ import { CollectorError } from './errors/collector-error';
 import { GoffApiController } from './controller/goff-api';
 
 const defaultTargetingKey = 'undefined-targetingKey';
+type Timer = ReturnType<typeof setInterval>;
 
 export class GoFeatureFlagDataCollectorHook implements Hook {
   // collectUnCachedEvent (optional) set to true if you want to send all events not only the cached evaluations.
   collectUnCachedEvaluation?: boolean;
   // bgSchedulerId contains the id of the setInterval that is running.
-  private bgScheduler?: NodeJS.Timeout | number;
+  private bgScheduler?: Timer;
   // dataCollectorBuffer contains all the FeatureEvents that we need to send to the relay-proxy for data collection.
   private dataCollectorBuffer?: FeatureEvent<any>[];
   // dataFlushInterval interval time (in millisecond) we use to call the relay proxy to collect data.