fix(resolve): replace switch with if

io/resolve.go

@@ -13,16 +13,15 @@ import (
 // ResolveUnixfsOnce resolves a single hop of a path through a graph in a
 // unixfs context. This includes handling traversing sharded directories.
 func ResolveUnixfsOnce(ctx context.Context, ds ipld.NodeGetter, nd ipld.Node, names []string) (*ipld.Link, []string, error) {
-	switch nd := nd.(type) {
-	case *dag.ProtoNode:
-		fsn, err := ft.FSNodeFromBytes(nd.Data())
+	pn, ok := nd.(*dag.ProtoNode)
+	if ok {
+		fsn, err := ft.FSNodeFromBytes(pn.Data())
 		if err != nil {
 			// Not a unixfs node, use standard object traversal code
 			return nd.ResolveLink(names)
 		}
 
-		switch fsn.Type() {
-		case ft.THAMTShard:
+		if fsn.Type() == ft.THAMTShard {
 			rods := dag.NewReadOnlyDagService(ds)
 			s, err := hamt.NewHamtFromDag(rods, nd)
 			if err != nil {
@@ -37,5 +36,6 @@ func ResolveUnixfsOnce(ctx context.Context, ds ipld.NodeGetter, nd ipld.Node, na
 			return out, names[1:], nil
 		}
 	}
+
 	return nd.ResolveLink(names)
 }