fix: resolve event-loop blocking when aborting a fetch

lib/fetch/index.js

@@ -313,16 +313,14 @@ function finalizeAndReportTiming (response, initiatorType = 'other') {
 }
 
 // https://w3c.github.io/resource-timing/#dfn-mark-resource-timing
-function markResourceTiming (timingInfo, originalURL, initiatorType, globalThis, cacheState) {
-  if (nodeMajor > 18 || (nodeMajor === 18 && nodeMinor >= 2)) {
-    performance.markResourceTiming(timingInfo, originalURL.href, initiatorType, globalThis, cacheState)
-  }
-}
+const markResourceTiming = (nodeMajor > 18 || (nodeMajor === 18 && nodeMinor >= 2))
+  ? performance.markResourceTiming
+  : () => {}
 
 // https://fetch.spec.whatwg.org/#abort-fetch
 function abortFetch (p, request, responseObject, error) {
   // 1. Reject promise with error.
-  p.reject(error)
+  setImmediate(() => p.reject(error))
 
   // 2. If request’s body is not null and is readable, then cancel request’s
   // body with error.

lib/pool.js

@@ -76,18 +76,17 @@ class Pool extends PoolBase {
   }
 
   [kGetDispatcher] () {
-    let dispatcher = this[kClients].find(dispatcher => !dispatcher[kNeedDrain])
-
-    if (dispatcher) {
-      return dispatcher
+    for (const client of this[kClients]) {
+      if (!client[kNeedDrain]) {
+        return client
+      }
     }
 
     if (!this[kConnections] || this[kClients].length < this[kConnections]) {
-      dispatcher = this[kFactory](this[kUrl], this[kOptions])
+      const dispatcher = this[kFactory](this[kUrl], this[kOptions])
       this[kAddClient](dispatcher)
+      return dispatcher
     }
-
-    return dispatcher
   }
 }