fix $effect.root

packages/svelte/src/internal/client/constants.js

@@ -10,6 +10,7 @@ export const DIRTY = 1 << 9;
 export const MAYBE_DIRTY = 1 << 10;
 export const INERT = 1 << 11;
 export const DESTROYED = 1 << 12;
+export const ROOT_EFFECT = 1 << 13;
 
 export const ROOT_BLOCK = 0;
 export const IF_BLOCK = 1;

packages/svelte/src/internal/client/reactivity/computations.js

@@ -20,7 +20,8 @@ import {
 	UNOWNED,
 	CLEAN,
 	UNINITIALIZED,
-	INERT
+	INERT,
+	ROOT_EFFECT
 } from '../constants.js';
 import { noop } from '../../common.js';
 
@@ -83,8 +84,10 @@ function internal_create_effect(type, fn, sync, block, schedule) {
 	signal.x = current_component_context;
 	if (current_effect !== null) {
 		signal.l = current_effect.l + 1;
+		if ((signal.f & ROOT_EFFECT) === 0) {
 			push_reference(current_effect, signal);
 		}
+	}
 	if (schedule) {
 		schedule_effect(signal, sync);
 	}
@@ -140,7 +143,7 @@ export function user_effect(fn) {
  * @returns {() => void}
  */
 export function user_root_effect(fn) {
-	const effect = render_effect(fn, current_block, true);
+	const effect = internal_create_effect(RENDER_EFFECT | ROOT_EFFECT, fn, true, current_block, true);
 	return () => {
 		destroy_signal(effect);
 	};