fix: mini repls were broken

packages/core/repl.mjs

@@ -3,10 +3,6 @@ import { evaluate as _evaluate } from './evaluate.mjs';
 import { logger } from './logger.mjs';
 import { setTime } from './time.mjs';
 
-export let scheduler; // expose scheduler to global scope
-// this is not optimal as it will only work for one repl at a time
-// TODO: use pattern.context to expose scheduler
-
 export function repl({
   interval,
   defaultOutput,
@@ -18,7 +14,7 @@ export function repl({
   transpiler,
   onToggle,
 }) {
-  scheduler = new Cyclist({
+  const scheduler = new Cyclist({
     interval,
     onTrigger: async (hap, deadline, duration) => {
       try {