@@ -0,0 +1,5 @@
+---
+"@solidjs/signals": patch
+---
+
+Drop the lane source's redundant `isPending` companion refresh on derived pending/settle; the verdict never depended on it and the source's own paths keep it current.
@@ -333,14 +333,16 @@ function recomputeLane(el: Computed<any>, own: boolean): OptimisticLane | null |
   return null;
 }
 
-/** recompute()'s catch path: track pending async in the current lane. */
+/** recompute()'s catch path: record the pending async as the current lane's
+ * (ownership — laneHeld decides the hold). The lane source's isPending
+ * companion is NOT refreshed here: its verdict never read _pendingAsync, and
+ * the source's own write/commit/settlement paths keep it current. */
 function laneAsyncPending(el: Computed<any>): void {
   const lane = findLane(currentOptimisticLane!);
   if (lane._source !== el) {
     lane._pendingAsync.add(el);
     ext(el)._optimisticLane = lane;
     (el as any)._config |= CONFIG_HAS_LANE;
-    GlobalQueue._updatePendingSignal !== null && GlobalQueue._updatePendingSignal(lane._source);
   }
 }
 
@@ -349,8 +351,6 @@ function laneAsyncSettled(el: Computed<any>): void {
   const resolvedLane = resolveLane(el);
   if (resolvedLane) {
     resolvedLane._pendingAsync.delete(el);
-    GlobalQueue._updatePendingSignal !== null &&
-      GlobalQueue._updatePendingSignal(resolvedLane._source);
   }
 }
 
 
@@ -359,7 +359,13 @@ module.exports = [
     // same INV-3 rule transactions use — lives in the lanes module this
     // scenario retains via latest(); the core floor and createStore are
     // byte-identical. ~40 B for the predicate and its two call sites.
-    limit: "10.13 KB",
+    //
+    // Dead companion refresh removed (follow-up): 10.13 -> 10.10 KB,
+    // measured at 10.062 macOS. laneAsyncPending/laneAsyncSettled refreshed
+    // the lane source's isPending companion on every derived pending/settle,
+    // but computePendingState never read _pendingAsync — the source's own
+    // write, commit and settlement paths already refresh it. -18 B.
+    limit: "10.10 KB",
     modifyEsbuildConfig
   },
   {
-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"@solidjs/signals": patch
 +---
++
 +Drop the lane source's redundant `isPending` companion refresh on derived pending/settle; the verdict never depended on it and the source's own paths keep it current.
Original file line number	Diff line number	Diff line change
`@@ -333,14 +333,16 @@ function recomputeLane(el: Computed<any>, own: boolean): OptimisticLane \| null \|`
`333`	`333`	`return null;`
`334`	`334`	`}`
`335`	`335`
`336`		`-/** recompute()'s catch path: track pending async in the current lane. */`
	`336`	`+/** recompute()'s catch path: record the pending async as the current lane's`
	`337`	`+ * (ownership — laneHeld decides the hold). The lane source's isPending`
	`338`	`+ * companion is NOT refreshed here: its verdict never read _pendingAsync, and`
	`339`	`+ * the source's own write/commit/settlement paths keep it current. */`
`337`	`340`	`function laneAsyncPending(el: Computed<any>): void {`
`338`	`341`	`const lane = findLane(currentOptimisticLane!);`
`339`	`342`	`if (lane._source !== el) {`
`340`	`343`	`lane._pendingAsync.add(el);`
`341`	`344`	`ext(el)._optimisticLane = lane;`
`342`	`345`	`(el as any)._config \|= CONFIG_HAS_LANE;`
`343`		`- GlobalQueue._updatePendingSignal !== null && GlobalQueue._updatePendingSignal(lane._source);`
`344`	`346`	`}`
`345`	`347`	`}`
`346`	`348`
`@@ -349,8 +351,6 @@ function laneAsyncSettled(el: Computed<any>): void {`
`349`	`351`	`const resolvedLane = resolveLane(el);`
`350`	`352`	`if (resolvedLane) {`
`351`	`353`	`resolvedLane._pendingAsync.delete(el);`
`352`		`- GlobalQueue._updatePendingSignal !== null &&`
`353`		`- GlobalQueue._updatePendingSignal(resolvedLane._source);`
`354`	`354`	`}`
`355`	`355`	`}`
`356`	`356`