ci(lint): pin golangci-lint and fix issues from v2.15.0

.github/workflows/lint-test.yaml

@@ -24,7 +24,7 @@ jobs:
       - name: Lint
         uses: golangci/golangci-lint-action@ba0d7d2ec06a0ea1cb5fa41b2e4a3ab91d21278a # v9.3.0
         with:
-          version: latest
+          version: v2.15.0
           args: --timeout 5m
 
   test:

.golangci.yml

@@ -140,6 +140,9 @@ linters:
           disabled: true
         - name: modifies-parameter
           disabled: true
+        # Every queue holds a sync mutex; a value receiver on MarshalJSON would copy it.
+        - name: marshal-receiver
+          disabled: true
         - name: var-naming
           arguments:
             - []
@@ -203,7 +206,9 @@ formatters:
     - gofumpt
   settings:
     gofumpt:
-      extra-rules: true
+      extra:
+        group-params: true
+        clothe-returns: true
   exclusions:
     generated: lax
     paths:

priority.go

@@ -46,9 +46,9 @@ func (h *priorityHeap[T]) Push(elem any) {
 func (h *priorityHeap[T]) Pop() any {
 	n := len(h.elems)
 
-	elem := (h.elems)[n-1]
+	elem := h.elems[n-1]
 
-	h.elems = (h.elems)[0 : n-1]
+	h.elems = h.elems[0 : n-1]
 
 	return elem
 }
@@ -115,10 +115,10 @@ func NewPriority[T comparable](
 	// provided, the elements are sorted and trimmed to fit the capacity.
 	if options.capacity != nil && *options.capacity < elementsHeap.Len() {
 		sort.Slice(elementsHeap.elems, func(i, j int) bool {
-			return lessFunc((elementsHeap.elems)[i], (elementsHeap.elems)[j])
+			return lessFunc(elementsHeap.elems[i], elementsHeap.elems[j])
 		})
 
-		elementsHeap.elems = (elementsHeap.elems)[:*options.capacity]
+		elementsHeap.elems = elementsHeap.elems[:*options.capacity]
 	}
 
 	heap.Init(elementsHeap)