fix: do not use goja.Value outside of loop

ref #22

pkg/app/promise_proxy.go

@@ -46,11 +46,11 @@ func NewPromiseProxyFrom(rt *goja.Runtime) *PromiseProxy {
 	return NewPromiseProxy(promise, resolve, reject)
 }
 
-func IsPromise(v goja.Value) (*goja.Promise, bool) {
+func isPromise(v any) (*goja.Promise, bool) {
 	if v == nil {
 		return nil, false
 	}
 
-	promise, ok := v.Export().(*goja.Promise)
+	promise, ok := v.(*goja.Promise)
 	return promise, ok
 }

pkg/app/server.go

@@ -23,7 +23,7 @@ type Server struct {
 	modules   []ServerModule
 }
 
-func (s *Server) ExecFuncByName(ctx context.Context, funcName string, args ...interface{}) (any, error) {
+func (s *Server) ExecFuncByName(ctx context.Context, funcName string, args ...any) (any, error) {
 	ctx = logger.With(ctx, logger.F("function", funcName), logger.F("args", args))
 
 	ret, err := s.Exec(ctx, funcName, args...)
@@ -34,9 +34,9 @@ func (s *Server) ExecFuncByName(ctx context.Context, funcName string, args ...in
 	return ret, nil
 }
 
-func (s *Server) Exec(ctx context.Context, callableOrFuncname any, args ...interface{}) (any, error) {
+func (s *Server) Exec(ctx context.Context, callableOrFuncname any, args ...any) (any, error) {
 	type result struct {
-		value goja.Value
+		value any
 		err   error
 	}
 
@@ -110,7 +110,7 @@ func (s *Server) Exec(ctx context.Context, callableOrFuncname any, args ...inter
 		}
 
 		done <- result{
-			value: value,
+			value: value.Export(),
 		}
 
 		logger.Debug(ctx, "executed callable", logger.F("callable", callableOrFuncname), logger.F("duration", time.Since(start).String()))
@@ -129,20 +129,18 @@ func (s *Server) Exec(ctx context.Context, callableOrFuncname any, args ...inter
 			return nil, errors.WithStack(result.err)
 		}
 
-		value := result.value
+		if promise, ok := isPromise(result.value); ok {
-
+			return s.waitForPromise(promise), nil
-		if promise, ok := IsPromise(value); ok {
-			value = s.waitForPromise(promise)
 		}
 
-		return value.Export(), nil
+		return result.value, nil
 	}
 }
 
-func (s *Server) waitForPromise(promise *goja.Promise) goja.Value {
+func (s *Server) waitForPromise(promise *goja.Promise) any {
 	var (
 		wg    sync.WaitGroup
-		value goja.Value
+		value any
 	)
 
 	wg.Add(1)
@@ -162,7 +160,7 @@ func (s *Server) waitForPromise(promise *goja.Promise) goja.Value {
 					return
 				}
 
-				value = promise.Result()
+				value = promise.Result().Export()
 
 				breakLoop = true
 			})

pkg/module/blob/http.go

@@ -2,6 +2,7 @@ package blob
 
 import (
 	"encoding/json"
+	"io"
 	"io/fs"
 	"mime/multipart"
 	"net/http"
@@ -164,7 +165,14 @@ func handleAppDownload(w http.ResponseWriter, r *http.Request) {
 		}
 	}()
 
-	http.ServeContent(w, r, string(replyMessage.BlobInfo.ID()), replyMessage.BlobInfo.ModTime(), replyMessage.Blob)
+	// TODO Fix usage of ServeContent
+	// http.ServeContent(w, r, string(replyMessage.BlobInfo.ID()), replyMessage.BlobInfo.ModTime(), replyMessage.Blob)
+
+	w.Header().Add("Content-Type", replyMessage.BlobInfo.ContentType())
+
+	if _, err := io.Copy(w, replyMessage.Blob); err != nil {
+		logger.Error(ctx, "could not write blob", logger.CapturedE(errors.WithStack(err)))
+	}
 }
 
 type uploadedFile struct {