Parse all template files before executing

internal/cli/execute.go

@@ -51,9 +51,12 @@ func runExecute(cmd *cobra.Command, opts executeOptions) {
 		return
 	}
 
-	var re *recipe.Recipe
-	var err error
-	var wasRemoteRecipe bool
+	var (
+		re              *recipe.Recipe
+		err             error
+		wasRemoteRecipe bool
+	)
+
 	if strings.HasPrefix(opts.RecipeURL, "oci://") {
 		wasRemoteRecipe = true
 		ctx := context.Background()

pkg/engine/engine.go

@@ -16,13 +16,17 @@ func (e Engine) Render(templates map[string][]byte, values map[string]interface{
 
 	rendered := make(map[string][]byte)
 
+	// Parse all templates first
 	for name, data := range templates {
 		_, err := t.New(name).Parse(string(data))
 		if err != nil {
 			// TODO: Inner error message includes prefix "template: ", which does not good when printing this error
 			return nil, fmt.Errorf("failed to parse template: %w", err)
 		}
+	}
 
+	// Execute each template seperately
+	for name := range templates {
 		var buf strings.Builder
 		if err := t.ExecuteTemplate(&buf, name, values); err != nil {
 			// TODO: Inner error message includes prefix "template: ", which does not good when printing this error