优化

client/shared/utils/is-promise.ts

@@ -0,0 +1,7 @@
+export function isPromise(obj: any): obj is Promise<unknown> {
+  return (
+    !!obj &&
+    (typeof obj === 'object' || typeof obj === 'function') &&
+    typeof obj.then === 'function'
+  );
+}