fix: reuse flags for native bundler (#3485)

Author: sweatybridge

internal/functions/deploy/bundle.go

@@ -50,7 +50,7 @@ func (b *dockerBundler) Bundle(ctx context.Context, slug, entrypoint, importMap
 	}
 	hostOutputPath := filepath.Join(hostOutputDir, "output.eszip")
 	// Create exec command
-	cmd := []string{"bundle", "--entrypoint", utils.ToDockerPath(entrypoint), "--output", utils.ToDockerPath(hostOutputPath), "--decorator", "tc39"}
+	cmd := []string{"bundle", "--entrypoint", utils.ToDockerPath(entrypoint), "--output", utils.ToDockerPath(hostOutputPath)}
 	if len(importMap) > 0 {
 		cmd = append(cmd, "--import-map", utils.ToDockerPath(importMap))
 	}
@@ -60,6 +60,7 @@ func (b *dockerBundler) Bundle(ctx context.Context, slug, entrypoint, importMap
 	if viper.GetBool("DEBUG") {
 		cmd = append(cmd, "--verbose")
 	}
+	cmd = append(cmd, function.BundleFlags...)
 
 	env := []string{}
 	if custom_registry := os.Getenv("NPM_CONFIG_REGISTRY"); custom_registry != "" {

pkg/function/bundle.go

@@ -29,8 +29,13 @@ func NewNativeBundler(tempDir string, fsys fs.FS) EszipBundler {
 	}
 }
 
-// Use a package private variable to allow testing without gosec complaining about G204
-var edgeRuntimeBin = "edge-runtime"
+var (
+	// Use a package private variable to allow testing without gosec complaining about G204
+	edgeRuntimeBin = "edge-runtime"
+	BundleFlags    = []string{
+		"--decorator", "tc39",
+	}
+)
 
 func (b *nativeBundler) Bundle(ctx context.Context, slug, entrypoint, importMap string, staticFiles []string, output io.Writer) (api.FunctionDeployMetadata, error) {
 	meta := NewMetadata(slug, entrypoint, importMap, staticFiles)
@@ -43,6 +48,7 @@ func (b *nativeBundler) Bundle(ctx context.Context, slug, entrypoint, importMap
 	for _, staticFile := range staticFiles {
 		args = append(args, "--static", staticFile)
 	}
+	args = append(args, BundleFlags...)
 	cmd := exec.CommandContext(ctx, edgeRuntimeBin, args...)
 	cmd.Stderr = os.Stderr
 	cmd.Stdout = os.Stdout