From c1584eb47b99631d5bb56b36013751a0d2dd82c1 Mon Sep 17 00:00:00 2001
From: Aykhan Shahsuvarov <aykhan.shahs@gmail.com>
Date: Mon, 9 Feb 2026 00:06:01 +0400
Subject: [PATCH] Remove unused functions and unexport internal sentinel error

---
 internal/config/config.go |  4 ----
 internal/script/script.go | 16 --------------
 internal/types/errors.go  | 44 +++++++++++++--------------------------
 3 files changed, 15 insertions(+), 49 deletions(-)

diff --git a/internal/config/config.go b/internal/config/config.go
index 28a1854..6a72219 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -93,10 +93,6 @@ type Config struct {
 	Js          []string           `yaml:"js,omitempty"`
 }
 
-func NewConfig() *Config {
-	return &Config{}
-}
-
 func (config Config) MarshalYAML() (any, error) {
 	const randomValueComment = "Cycles through all values, with a new random start each round"
 
diff --git a/internal/script/script.go b/internal/script/script.go
index b0e5f92..a4b94e5 100644
--- a/internal/script/script.go
+++ b/internal/script/script.go
@@ -145,22 +145,6 @@ func ValidateScript(ctx context.Context, source string, engineType EngineType) e
 	return nil
 }
 
-// ValidateScripts validates multiple script sources.
-// It can return the following errors:
-//   - types.ErrScriptEmpty
-//   - types.ErrScriptTransformMissing
-//   - types.ScriptLoadError
-//   - types.ScriptExecutionError
-//   - types.ScriptUnknownEngineError
-func ValidateScripts(ctx context.Context, sources []string, engineType EngineType) error {
-	for _, src := range sources {
-		if err := ValidateScript(ctx, src, engineType); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 // fetchURL downloads content from an HTTP/HTTPS URL.
 // It can return the following errors:
 //   - types.HTTPFetchError
diff --git a/internal/types/errors.go b/internal/types/errors.go
index d56c6e1..a8a2332 100644
--- a/internal/types/errors.go
+++ b/internal/types/errors.go
@@ -9,7 +9,7 @@ import (
 // ======================================== General ========================================
 
 var (
-	ErrNoError = errors.New("no error (internal)")
+	errNoError = errors.New("no error (internal)")
 )
 
 type FieldParseError struct {
@@ -20,7 +20,7 @@ type FieldParseError struct {
 
 func NewFieldParseError(field string, value string, err error) FieldParseError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return FieldParseError{field, value, err}
 }
@@ -68,7 +68,7 @@ type FieldValidationError struct {
 
 func NewFieldValidationError(field string, value string, err error) FieldValidationError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return FieldValidationError{field, value, err}
 }
@@ -114,7 +114,7 @@ type UnmarshalError struct {
 
 func NewUnmarshalError(err error) UnmarshalError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return UnmarshalError{err}
 }
@@ -136,7 +136,7 @@ type FileReadError struct {
 
 func NewFileReadError(path string, err error) FileReadError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return FileReadError{path, err}
 }
@@ -156,7 +156,7 @@ type HTTPFetchError struct {
 
 func NewHTTPFetchError(url string, err error) HTTPFetchError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return HTTPFetchError{url, err}
 }
@@ -190,7 +190,7 @@ type URLParseError struct {
 
 func NewURLParseError(url string, err error) URLParseError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return URLParseError{url, err}
 }
@@ -216,7 +216,7 @@ type TemplateParseError struct {
 
 func NewTemplateParseError(err error) TemplateParseError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return TemplateParseError{err}
 }
@@ -235,7 +235,7 @@ type TemplateRenderError struct {
 
 func NewTemplateRenderError(err error) TemplateRenderError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return TemplateRenderError{err}
 }
@@ -248,20 +248,6 @@ func (e TemplateRenderError) Unwrap() error {
 	return e.Err
 }
 
-// ======================================== YAML ========================================
-
-type YAMLFormatError struct {
-	Detail string
-}
-
-func NewYAMLFormatError(detail string) YAMLFormatError {
-	return YAMLFormatError{detail}
-}
-
-func (e YAMLFormatError) Error() string {
-	return e.Detail
-}
-
 // ======================================== CLI ========================================
 
 var (
@@ -288,7 +274,7 @@ type ConfigFileReadError struct {
 
 func NewConfigFileReadError(err error) ConfigFileReadError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return ConfigFileReadError{err}
 }
@@ -321,7 +307,7 @@ type ProxyParseError struct {
 
 func NewProxyParseError(err error) ProxyParseError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return ProxyParseError{err}
 }
@@ -365,7 +351,7 @@ type ProxyDialError struct {
 
 func NewProxyDialError(proxy string, err error) ProxyDialError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return ProxyDialError{proxy, err}
 }
@@ -395,7 +381,7 @@ type ScriptLoadError struct {
 
 func NewScriptLoadError(source string, err error) ScriptLoadError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return ScriptLoadError{source, err}
 }
@@ -415,7 +401,7 @@ type ScriptExecutionError struct {
 
 func NewScriptExecutionError(engineType string, err error) ScriptExecutionError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return ScriptExecutionError{engineType, err}
 }
@@ -436,7 +422,7 @@ type ScriptChainError struct {
 
 func NewScriptChainError(engineType string, index int, err error) ScriptChainError {
 	if err == nil {
-		err = ErrNoError
+		err = errNoError
 	}
 	return ScriptChainError{engineType, index, err}
 }