ci: add prealloc to linter rules

.golangci.yml

@@ -27,6 +27,7 @@ linters:
   - nilerr
   - nolintlint
   - predeclared
+  - prealloc
   - revive
   - stylecheck
   - unconvert

cmd/gateway_dump.go

@@ -30,7 +30,7 @@ func listWorkspaces(ctx context.Context, client *kong.Client) ([]string, error)
 	if err != nil {
 		return nil, fmt.Errorf("fetching workspaces from Kong: %w", err)
 	}
-	var res []string
+	res := make([]string, 0, len(workspaces))
 	for _, workspace := range workspaces {
 		res = append(res, *workspace.Name)
 	}

kong2kic/route.go

@@ -87,7 +87,7 @@ func createIngressPaths(
 	servicePort *int,
 	pathType k8snetv1.PathType,
 ) []k8snetv1.HTTPIngressPath {
-	var paths []k8snetv1.HTTPIngressPath
+	paths := make([]k8snetv1.HTTPIngressPath, 0, len(route.Paths))
 	for _, path := range route.Paths {
 		sCopy := *path
 		if strings.HasPrefix(sCopy, "~") {

kong2tf/generate_resource.go

@@ -219,7 +219,7 @@ func generateParents(parents map[string]string) string {
 		return ""
 	}
 
-	var result []string
+	result := make([]string, 0, len(parents))
 	for k, v := range parents {
 		v = strings.ReplaceAll(v, "-", "_")
 		// if parent ends with _id, use it as-is