Add scheduleTask and runWorkLoop to public API

packages/react-native-fantom/src/index.js

@@ -60,6 +60,17 @@ class Root {
   // TODO: add an API to check if all surfaces were deallocated when tests are finished.
 }
 
+const DEFAULT_TASK_PRIORITY = schedulerPriorityImmediate;
+
+/**
+ * Schedules a task to run on the event loop.
+ * If the work loop is running, it will be executed according to its priority.
+ * Otherwise, it will wait in the queue until the work loop runs.
+ */
+export function scheduleTask(task: () => void | Promise<void>) {
+  nativeRuntimeScheduler.unstable_scheduleCallback(DEFAULT_TASK_PRIORITY, task);
+}
+
 let flushingQueue = false;
 
 /*
@@ -70,14 +81,23 @@ let flushingQueue = false;
 export function runTask(task: () => void | Promise<void>) {
   if (flushingQueue) {
     throw new Error(
-      'Nested runTask calls are not allowed. If you want to schedule a task from inside another task, use scheduleTask instead.',
+      'Nested `runTask` calls are not allowed. If you want to schedule a task from inside another task, use `scheduleTask` instead.',
     );
   }
 
-  nativeRuntimeScheduler.unstable_scheduleCallback(
-    schedulerPriorityImmediate,
-    task,
-  );
+  scheduleTask(task);
+  runWorkLoop();
+}
+
+/**
+ * Runs the event loop until all tasks are executed.
+ */
+export function runWorkLoop(): void {
+  if (flushingQueue) {
+    throw new Error(
+      'Cannot start the work loop because it is already running. If you want to schedule a task from inside another task, use `scheduleTask` instead.',
+    );
+  }
 
   try {
     flushingQueue = true;