avoid explicit fs.FS wrapping

plugins/jsvm/binds.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"io"
+	"io/fs"
 	"log/slog"
 	"net/http"
 	"os"
@@ -814,8 +815,15 @@ func apisBinds(vm *goja.Runtime) {
 	obj := vm.NewObject()
 	vm.Set("$apis", obj)
 
-	obj.Set("static", func(dir string, indexFallback bool) func(*core.RequestEvent) error {
-		return apis.Static(os.DirFS(dir), indexFallback)
+	obj.Set("static", func(dirOrFS any, indexFallback bool) func(*core.RequestEvent) error {
+		switch v := dirOrFS.(type) {
+		case fs.FS:
+			return apis.Static(v, indexFallback)
+		case string:
+			return apis.Static(os.DirFS(v), indexFallback)
+		default:
+			panic("$apis.static expects the first argument to be either a plain string path or fs.FS value")
+		}
 	})
 
 	// middlewares