perf(runtime): short-circuit `queue_async_op` for Poll::Ready (#15773)

1 files changed, 2 insertions, 1 deletions

diff --git a/core/01_core.js b/core/01_core.js
index ab9722bc1..fda3e4977 100644
--- a/core/01_core.js
+++ b/core/01_core.js
@@ -160,10 +160,11 @@
 
   function opAsync(opName, ...args) {
     const promiseId = nextPromiseId++;
+    let p = setPromise(promiseId);
     const maybeError = ops[opName](promiseId, ...args);
     // Handle sync error (e.g: error parsing args)
     if (maybeError) return unwrapOpResult(maybeError);
-    let p = PromisePrototypeThen(setPromise(promiseId), unwrapOpResult);
+    p = PromisePrototypeThen(p, unwrapOpResult);
     if (opCallTracingEnabled) {
       // Capture a stack trace by creating a new `Error` object. We remove the
       // first 6 characters (the `Error\n` prefix) to get just the stack trace.