i think cron works

src/core/structures/default-services.ts

@@ -1,4 +1,9 @@
 import type { LogPayload, Logging, ErrorHandling } from '../interfaces';
+import { AnyFunction } from '../../types/utility';
+import cron from 'node-cron'
+import { EventEmitter } from 'events';
+import type { CronEventCommand, Module } from '../../types/core-modules'
+import { EventType } from './enums';
 /**
  * @internal
  * @since 2.0.0
@@ -41,3 +46,39 @@ export class DefaultLogging implements Logging {
         console.warn(`WARN: ${this.date().toISOString()} -> ${payload.message}`);
     }
 }
+
+export class Cron extends EventEmitter { 
+    tasks: string[] = [];
+    modules: Map<string, CronEventCommand> = new Map();
+    private sanityCheck(eventName: string | symbol) : asserts eventName is string {
+        if(typeof eventName === 'symbol') throw Error("Cron cannot add symbol based listener")
+        if(!cron.validate(eventName)) {
+            throw Error("Invalid cron expression while adding")
+        }
+    }
+    addCronModule(module: Module) {
+        if(module.type !== EventType.Cron) {
+            throw Error("Can only add cron modules");
+        }
+        this.modules.set(module.name!, module as CronEventCommand); 
+    }
+    addListener(eventName: string | symbol, listener: AnyFunction): this {
+        this.sanityCheck(eventName);
+        const retrievedModule = this.modules.get(eventName);
+        if(!retrievedModule) throw Error("Adding task: module " +eventName +"was not found");
+        cron.schedule(retrievedModule.pattern, listener, {
+            name: retrievedModule?.name!
+        });
+        return this;
+    }
+    removeListener(eventName: string | symbol, listener: AnyFunction) {
+        this.sanityCheck(eventName);
+        const retrievedModule = this.modules.get(eventName);
+        if(!retrievedModule) throw Error("Removing cron: module " +eventName +"was not found");
+        const task= cron.getTasks().get(retrievedModule.name!) 
+        if(!task) throw Error("Finding cron task with"+ retrievedModule.name + " not found");
+        task.stop();
+        super.removeListener(eventName, listener);
+        return this;
+    }
+}