Inline queueMicrotask polyfill

facebook · Jan 26, 2021 · 41a02ed · 41a02ed
1 parent cd43d12
commit 41a02ed
Showing 1 changed file with 14 additions and 16 deletions.
diff --git a/packages/scheduler/src/queueMicrotask.js b/packages/scheduler/src/queueMicrotask.js
@@ -6,20 +6,18 @@
  *
  */
 
-function queueMicrotaskPolyfill(callback: boolean => void) {
-  if (typeof queueMicrotask !== 'undefined') {
-    queueMicrotask(callback);
-  } else if (typeof Promise !== 'undefined') {
-    Promise.resolve(null)
-      .then(callback)
-      .catch(e => {
-        setTimeout(() => {
-          throw e;
-        });
-      });
-  } else {
-    setTimeout(callback);
-  }
-}
+const queueMicrotaskImpl =
+  typeof queueMicrotask === 'function'
+    ? queueMicrotask
+    : typeof Promise !== 'undefined'
+    ? callback =>
+      Promise.resolve(null)
+        .then(callback)
+        .catch(e => {
+          setTimeout(() => {
+            throw e;
+          });
+        })
+    : setTimeout;
 
-export default queueMicrotaskPolyfill;
+export default queueMicrotaskImpl;