more

packages/svelte/src/internal/client/dom/task.js

@@ -27,13 +27,13 @@ function run_post_micro_tasks() {
 	run_all(tasks);
 }
 
-export function run_idle_tasks() {
+function run_idle_tasks() {
 	var tasks = idle_tasks;
 	idle_tasks = [];
 	run_all(tasks);
 }
 
-export function run_micro_tasks() {
+function run_micro_tasks() {
 	run_boundary_micro_tasks();
 	run_post_micro_tasks();
 }
@@ -70,3 +70,16 @@ export function queue_idle_task(fn) {
 
 	idle_tasks.push(fn);
 }
+
+/**
+ * Synchronously run any queued tasks.
+ */
+export function flush_tasks() {
+	if (boundary_micro_tasks.length > 0 || micro_tasks.length > 0) {
+		run_micro_tasks();
+	}
+
+	if (idle_tasks.length > 0) {
+		run_idle_tasks();
+	}
+}

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

@@ -27,7 +27,7 @@ import {
 	REACTION_IS_UPDATING,
 	EFFECT_ASYNC
 } from './constants.js';
-import { run_idle_tasks, run_micro_tasks } from './dom/task.js';
+import { flush_tasks } from './dom/task.js';
 import { internal_set } from './reactivity/sources.js';
 import {
 	destroy_derived_effects,
@@ -931,8 +931,7 @@ export function flush_sync(fn) {
 
 		var result = fn?.();
 
-		run_micro_tasks();
-		run_idle_tasks();
+		flush_tasks();
 
 		if (queued_root_effects.length > 0 || root_effects.length > 0) {
 			flush_sync();