Dropped unnecessary circular reference

Author: WebReflection

docs/core.js

@@ -9,7 +9,7 @@ import { io } from './interpreter/_utils.js';
 import { addAllListeners } from './listeners.js';
 import { Hook } from './worker/hooks.js';
 import workerURL from './worker/url.js';
-import { XWorker } from './index.js';
+import XWorker from './xworker.js';
 
 export const CUSTOM_SELECTORS = [];
 

docs/core.js.map

@@ -1,6 +1,6 @@
 import { $$ } from 'basic-devtools';
 
-import xworker from './worker/class.js';
+import XWorker from './xworker.js';
 import { handle } from './script-handler.js';
 import { assign } from './utils.js';
 import { selectors, prefixes } from './interpreters.js';
@@ -10,7 +10,7 @@ import { listener, addAllListeners } from './listeners.js';
 export { define, whenDefined } from './custom.js';
 export { env } from './listeners.js';
 export * from './errors.js';
-export const XWorker = xworker();
+export { XWorker };
 
 const mo = new MutationObserver((records) => {
     const selector = selectors.join(',');

esm/custom.js

@@ -0,0 +1,3 @@
+import xworker from './worker/class.js';
+
+export default xworker();