diff --git a/ai/ai.go b/ai/ai.go
index 446101e..8eabdb8 100644
--- a/ai/ai.go
+++ b/ai/ai.go
@@ -1,7 +1,7 @@
 package main
 
 import (
-	"apigo.cc/ai/ai/js"
+	"apigo.cc/ai/ai"
 	"fmt"
 	"github.com/ssgo/u"
 	"os"
@@ -10,7 +10,7 @@ import (
 
 func main() {
 	if len(os.Args) > 1 && (os.Args[1] == "-e" || os.Args[1] == "export") {
-		imports, err := js.ExportForDev()
+		imports, err := ai.ExportForDev()
 		if err != nil {
 			fmt.Println(err.Error())
 		} else {
@@ -40,7 +40,7 @@ function main(...args) {
 			for i := 2; i < len(os.Args); i++ {
 				args[i-2] = os.Args[i]
 			}
-			result, err := js.RunFile(jsFile, args...)
+			result, err := ai.RunFile(jsFile, args...)
 			if err != nil {
 				fmt.Println(err.Error())
 			} else if result != nil {
diff --git a/go.mod b/go.mod
index 643c0f0..376e470 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.22
 
 require (
 	github.com/dop251/goja v0.0.0-20240828124009-016eb7256539
+	github.com/dop251/goja_nodejs v0.0.0-20240728170619-29b559befffc
 	github.com/go-resty/resty/v2 v2.15.0
 	github.com/golang-jwt/jwt/v5 v5.2.1
 	github.com/sashabaranov/go-openai v1.29.2
@@ -16,7 +17,6 @@ require (
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dlclark/regexp2 v1.11.4 // indirect
-	github.com/dop251/goja_nodejs v0.0.0-20240728170619-29b559befffc // indirect
 	github.com/go-sourcemap/sourcemap v2.1.4+incompatible // indirect
 	github.com/google/pprof v0.0.0-20240910150728-a0b0bb1d4134 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
@@ -25,7 +25,3 @@ require (
 	golang.org/x/text v0.18.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
-
-replace (
-	github.com/ssgo/config v1.7.7 => ../../ssgo/config
-)
diff --git a/js/js.go b/js.go
similarity index 67%
rename from js/js.go
rename to js.go
index 662eb57..5d7e869 100644
--- a/js/js.go
+++ b/js.go
@@ -1,7 +1,7 @@
-package js
+package ai
 
 import (
-	"apigo.cc/ai/ai"
+	"apigo.cc/ai/ai/js"
 	"apigo.cc/ai/ai/llm"
 	"bytes"
 	_ "embed"
@@ -17,24 +17,27 @@ import (
 	"text/template"
 )
 
-//go:embed lib/ai.ts
+//go:embed js/lib/ai.ts
 var aiTS string
 
-//go:embed lib/console.ts
+//go:embed js/lib/console.ts
 var consoleTS string
 
-//go:embed lib/file.ts
+//go:embed js/lib/file.ts
 var fileTS string
 
+//go:embed js/lib/util.ts
+var utilTS string
+
 func RunFile(file string, args ...any) (any, error) {
 	return Run(u.ReadFileN(file), file, args...)
 }
 
 func Run(code string, refFile string, args ...any) (any, error) {
 	var r any
-	js, err := StartFromCode(code, refFile)
+	rt, err := StartFromCode(code, refFile)
 	if err == nil {
-		r, err = js.Run(args...)
+		r, err = rt.Run(args...)
 	}
 	return r, err
 }
@@ -44,7 +47,7 @@ var importLibMatcher = regexp.MustCompile(`(?im)^\s*(import)\s+(.+?)\s+from\s+['
 var requireLibMatcher = regexp.MustCompile(`(?im)^\s*(const|let|var)\s+(.+?)\s*=\s*require\s*\(\s*['"][./\\\w:]+lib[/\\](.+?)(\.ts)?['"]\s*\)`)
 var checkMainMatcher = regexp.MustCompile(`(?im)^\s*function\s+main\s*\(`)
 
-type JS struct {
+type Runtime struct {
 	vm       *goja.Runtime
 	required map[string]bool
 	file     string
@@ -52,34 +55,40 @@ type JS struct {
 	code     string
 }
 
-func (js *JS) requireMod(name string) error {
+func (rt *Runtime) requireMod(name string) error {
 	var err error
 	if name == "console" || name == "" {
-		if !js.required["console"] {
-			js.required["console"] = true
-			err = js.vm.Set("console", requireConsole())
+		if !rt.required["console"] {
+			rt.required["console"] = true
+			err = rt.vm.Set("console", js.RequireConsole())
 		}
 	}
 	if err == nil && (name == "file" || name == "") {
-		if !js.required["file"] {
-			js.required["file"] = true
-			err = js.vm.Set("file", requireFile())
+		if !rt.required["file"] {
+			rt.required["file"] = true
+			err = rt.vm.Set("file", js.RequireFile())
+		}
+	}
+	if err == nil && (name == "util" || name == "") {
+		if !rt.required["util"] {
+			rt.required["util"] = true
+			err = rt.vm.Set("util", js.RequireUtil())
 		}
 	}
 	if err == nil && (name == "ai" || name == "") {
-		if !js.required["ai"] {
-			js.required["ai"] = true
+		if !rt.required["ai"] {
+			rt.required["ai"] = true
 			aiList := make(map[string]any)
 			for name, lm := range llm.List() {
-				aiList[name] = requireAI(lm)
+				aiList[name] = js.RequireAI(lm)
 			}
-			err = js.vm.Set("ai", aiList)
+			err = rt.vm.Set("ai", aiList)
 		}
 	}
 	return err
 }
 
-func (js *JS) makeImport(matcher *regexp.Regexp, code string) (string, int, error) {
+func (rt *Runtime) makeImport(matcher *regexp.Regexp, code string) (string, int, error) {
 	var modErr error
 	importCount := 0
 	code = matcher.ReplaceAllStringFunc(code, func(str string) string {
@@ -92,7 +101,7 @@ func (js *JS) makeImport(matcher *regexp.Regexp, code string) (string, int, erro
 			modName := m[3]
 			importCount++
 			if modErr == nil {
-				if err := js.requireMod(modName); err != nil {
+				if err := rt.requireMod(modName); err != nil {
 					modErr = err
 				}
 			}
@@ -105,11 +114,11 @@ func (js *JS) makeImport(matcher *regexp.Regexp, code string) (string, int, erro
 	return code, importCount, modErr
 }
 
-func StartFromFile(file string) (*JS, error) {
+func StartFromFile(file string) (*Runtime, error) {
 	return StartFromCode(u.ReadFileN(file), file)
 }
 
-func StartFromCode(code, refFile string) (*JS, error) {
+func StartFromCode(code, refFile string) (*Runtime, error) {
 	if refFile == "" {
 		refFile = "main.js"
 	}
@@ -118,9 +127,9 @@ func StartFromCode(code, refFile string) (*JS, error) {
 		refFile = absFile
 	}
 
-	ai.InitFrom(filepath.Dir(refFile))
+	InitFrom(filepath.Dir(refFile))
 
-	js := &JS{
+	rt := &Runtime{
 		vm:       goja.New(),
 		required: map[string]bool{},
 		file:     refFile,
@@ -131,29 +140,29 @@ func StartFromCode(code, refFile string) (*JS, error) {
 	// 按需加载引用
 	var importCount int
 	var modErr error
-	js.code, importCount, modErr = js.makeImport(importLibMatcher, js.code)
+	rt.code, importCount, modErr = rt.makeImport(importLibMatcher, rt.code)
 	if modErr == nil {
 		importCount1 := importCount
-		js.code, importCount, modErr = js.makeImport(requireLibMatcher, js.code)
+		rt.code, importCount, modErr = rt.makeImport(requireLibMatcher, rt.code)
 		importCount += importCount1
 	}
 
 	// 将 import 转换为 require
-	js.code = importModMatcher.ReplaceAllString(js.code, "let $1 = require('$2')")
+	rt.code = importModMatcher.ReplaceAllString(rt.code, "let $1 = require('$2')")
 
 	// 如果没有import，默认import所有
 	if modErr == nil && importCount == 0 {
-		modErr = js.requireMod("")
+		modErr = rt.requireMod("")
 	}
 	if modErr != nil {
 		return nil, modErr
 	}
 
-	//fmt.Println(u.BCyan(js.code))
+	//fmt.Println(u.BCyan(rt.code))
 
 	// 处理模块引用
 	require.NewRegistryWithLoader(func(path string) ([]byte, error) {
-		refPath := filepath.Join(filepath.Dir(js.file), path)
+		refPath := filepath.Join(filepath.Dir(rt.file), path)
 		if !strings.HasSuffix(refPath, ".js") && !u.FileExists(refPath) {
 			refPath += ".js"
 		}
@@ -161,23 +170,23 @@ func StartFromCode(code, refFile string) (*JS, error) {
 		if err != nil {
 			return nil, err
 		}
-		modCode, _, _ = js.makeImport(importLibMatcher, modCode)
-		modCode, _, _ = js.makeImport(requireLibMatcher, modCode)
+		modCode, _, _ = rt.makeImport(importLibMatcher, modCode)
+		modCode, _, _ = rt.makeImport(requireLibMatcher, modCode)
 		return []byte(modCode), modErr
-	}).Enable(js.vm)
+	}).Enable(rt.vm)
 
 	// 初始化主函数
-	if !checkMainMatcher.MatchString(js.code) {
-		js.code = "function main(...args){" + js.code + "}"
+	if !checkMainMatcher.MatchString(rt.code) {
+		rt.code = "function main(...args){" + rt.code + "}"
 	}
-	if _, err := js.vm.RunScript("main", js.code); err != nil {
+	if _, err := rt.vm.RunScript("main", rt.code); err != nil {
 		return nil, err
 	}
 
-	return js, nil
+	return rt, nil
 }
 
-func (js *JS) Run(args ...any) (any, error) {
+func (rt *Runtime) Run(args ...any) (any, error) {
 	// 解析参数
 	for i, arg := range args {
 		if str, ok := arg.(string); ok {
@@ -188,10 +197,10 @@ func (js *JS) Run(args ...any) (any, error) {
 		}
 	}
 
-	if err := js.vm.Set("__args", args); err != nil {
+	if err := rt.vm.Set("__args", args); err != nil {
 		return nil, err
 	}
-	jsResult, err := js.vm.RunScript(js.file, "main(...__args)")
+	jsResult, err := rt.vm.RunScript(rt.file, "main(...__args)")
 
 	var result any
 	if err == nil {
@@ -207,7 +216,7 @@ type Exports struct {
 }
 
 func ExportForDev() (string, error) {
-	ai.Init()
+	Init()
 	if len(llm.List()) == 0 && !u.FileExists("env.yml") && !u.FileExists("env.json") && !u.FileExists("llm.yml") && !u.FileExists("llm.json") {
 		return "", errors.New("no llm config found, please run `ai -e` on env.yml or llm.yml path")
 	}
@@ -231,8 +240,10 @@ func ExportForDev() (string, error) {
 
 	_ = u.WriteFile(filepath.Join("lib", "console.ts"), consoleTS)
 	_ = u.WriteFile(filepath.Join("lib", "file.ts"), fileTS)
+	_ = u.WriteFile(filepath.Join("lib", "util.ts"), utilTS)
 
 	return `import {` + strings.Join(exports.LLMList, ", ") + `} from './lib/ai'
 import console from './lib/console'
+import util from './lib/util'
 import file from './lib/file'`, nil
 }
diff --git a/js/ai.go b/js/ai.go
index 0f3aff8..4f60a32 100644
--- a/js/ai.go
+++ b/js/ai.go
@@ -22,7 +22,7 @@ type AIGCResult struct {
 	Error    string
 }
 
-func requireAI(lm llm.LLM) map[string]any {
+func RequireAI(lm llm.LLM) map[string]any {
 	return map[string]any{
 		"ask": func(args goja.FunctionCall, vm *goja.Runtime) goja.Value {
 			conf, cb := getAskArgs(args.This, vm, args.Arguments)
diff --git a/js/console.go b/js/console.go
index fe5ec5d..e585ec3 100644
--- a/js/console.go
+++ b/js/console.go
@@ -7,7 +7,7 @@ import (
 	"strings"
 )
 
-func requireConsole() map[string]any {
+func RequireConsole() map[string]any {
 	return map[string]any{
 		"print": func(args goja.FunctionCall) goja.Value {
 			consolePrint(args, "print", nil)
diff --git a/js/file.go b/js/file.go
index 90f7d7c..0fc0e2e 100644
--- a/js/file.go
+++ b/js/file.go
@@ -6,7 +6,7 @@ import (
 	"github.com/ssgo/u"
 )
 
-func requireFile() map[string]any {
+func RequireFile() map[string]any {
 	return map[string]any{
 		"read": func(args goja.FunctionCall, vm *goja.Runtime) goja.Value {
 			if len(args.Arguments) < 1 {
diff --git a/js/lib/ai.ts b/js/lib/ai.ts
index 6139132..2cab9ab 100644
--- a/js/lib/ai.ts
+++ b/js/lib/ai.ts
@@ -2,15 +2,15 @@
 
 {{range .LLMList}}
 let {{.}}: LLM
-{{end}}
+{{- end}}
 
 export default {
-{{range .LLMList}}
+{{- range .LLMList}}
     {{.}},
-{{end}}
+{{- end}}
 }
 
-interface ChatModelConfig {
+interface ChatConfig {
     model: string
     ratio: number
     maxTokens: number
@@ -27,6 +27,12 @@ interface ChatResult {
     error: string
 }
 
+interface GCConfig {
+    model: string
+    size: string
+    ref: string
+}
+
 interface GCResult {
     result: string
     preview: string
@@ -47,35 +53,20 @@ interface Support {
 }
 
 interface LLM {
-    ask(messages: any, config?: ChatModelConfig, callback?: (answer: string) => void): ChatResult
-
+    ask(messages: any, config?: ChatConfig, callback?: (answer: string) => void): ChatResult
     fastAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     longAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     batterAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     bestAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     multiAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     bestMultiAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     codeInterpreterAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
     webSearchAsk(messages: any, callback?: (answer: string) => void): ChatResult
-
-    makeImage(model: string, prompt: string, size?: string, refImage?: string): GCResult
-
-    fastMakeImage(prompt: string, size?: string, refImage?: string): GCResult
-
-    bestMakeImage(prompt: string, size?: string, refImage?: string): GCResult
-
-    makeVideo(arg2: string, arg3: string, arg4: string, arg5: string): GCResult
-
-    fastMakeVideo(prompt: string, size?: string, refImage?: string): GCResult
-
-    bestMakeVideo(prompt: string, size?: string, refImage?: string): GCResult
-
+    makeImage(prompt: string, config?: GCConfig): GCResult
+    fastMakeImage(prompt: string, config?: GCConfig): GCResult
+    bestMakeImage(prompt: string, config?: GCConfig): GCResult
+    makeVideo(prompt: string, config?: GCConfig): GCResult
+    fastMakeVideo(prompt: string, config?: GCConfig): GCResult
+    bestMakeVideo(prompt: string, config?: GCConfig): GCResult
     support: Support
 }
diff --git a/js/lib/console.ts b/js/lib/console.ts
index 8c40017..59c8812 100644
--- a/js/lib/console.ts
+++ b/js/lib/console.ts
@@ -11,27 +11,11 @@ export default {
     input,
 }
 
-function print(...data: any[]): void {
-}
-
-function println(...data: any[]): void {
-}
-
-function log(...data: any[]): void {
-}
-
-function debug(...data: any[]): void {
-}
-
-function info(...data: any[]): void {
-}
-
-function warn(...data: any[]): void {
-}
-
-function error(...data: any[]): void {
-}
-
-function input(...data: any[]): string {
-    return ''
-}
+function print(...data: any[]): void {}
+function println(...data: any[]): void {}
+function log(...data: any[]): void {}
+function debug(...data: any[]): void {}
+function info(...data: any[]): void {}
+function warn(...data: any[]): void {}
+function error(...data: any[]): void {}
+function input(...data: any[]): string {return ''}
diff --git a/js/lib/file.ts b/js/lib/file.ts
index 0cdc810..265c481 100644
--- a/js/lib/file.ts
+++ b/js/lib/file.ts
@@ -7,21 +7,10 @@ export default {
     stat
 }
 
-function read(filename: string): string {
-    return ''
-}
-
-function write(filename: string, data: any): void {
-}
-
-
-function dir(filename: string): Array<FileInfo> {
-    return null
-}
-
-function stat(filename: string): FileInfo {
-    return null
-}
+function read(filename: string): string {return ''}
+function write(filename: string, data: any): void {}
+function dir(filename: string): Array<FileInfo> {return null}
+function stat(filename: string): FileInfo {return null}
 
 interface FileInfo {
     Name: string
diff --git a/js/lib/util.ts b/js/lib/util.ts
new file mode 100644
index 0000000..2495e57
--- /dev/null
+++ b/js/lib/util.ts
@@ -0,0 +1,51 @@
+// just for develop
+
+export default {
+    json,
+    jsonP,
+    unJson,
+    yaml,
+    unYaml,
+    base64,
+    unBase64,
+    urlBase64,
+    unUrlBase64,
+    hex,
+    unHex,
+    aes,
+    unAes,
+    gzip,
+    gunzip,
+    id,
+    uniqueId,
+    token,
+    md5,
+    sha1,
+    sha256,
+    sha512,
+    tpl
+}
+
+function json(data:any): string {return ''}
+function jsonP(data:any): string {return ''}
+function unJson(data:string): any {return null}
+function yaml(data:any): string {return ''}
+function unYaml(data:string): any {return null}
+function base64(data:any): string {return ''}
+function unBase64(data:string): any {return null}
+function urlBase64(data:any): string {return ''}
+function unUrlBase64(data:string): any {return null}
+function hex(data:any): string {return ''}
+function unHex(data:string): any {return null}
+function aes(data:any, key:string, iv:string): string {return ''}
+function unAes(data:string, key:string, iv:string): any {return null}
+function gzip(data:any): string {return ''}
+function gunzip(data:string): any {return null}
+function id(): string {return ''}
+function uniqueId(): string {return ''}
+function token(size:number): string {return ''}
+function md5(data:any): string {return ''}
+function sha1(data:any): string {return ''}
+function sha256(data:any): string {return ''}
+function sha512(data:any): string {return ''}
+function tpl(text:string, data:any): string {return ''}
diff --git a/llm/openai/gc.go b/llm/openai/gc.go
index a042e1b..aa0c5de 100644
--- a/llm/openai/gc.go
+++ b/llm/openai/gc.go
@@ -31,21 +31,23 @@ func (lm *LLM) MakeImage(prompt string, config llm.GCConfig) ([]string, error) {
 	if lm.config.Endpoint != "" {
 		openaiConf.BaseURL = lm.config.Endpoint
 	}
+	config.SetDefault(&lm.config.GCConfig)
 	c := openai.NewClientWithConfig(openaiConf)
 	style := openai.CreateImageStyleVivid
 	if (!strings.Contains(prompt, "vivid") || !strings.Contains(prompt, "生动的")) && (strings.Contains(prompt, "natural") || strings.Contains(prompt, "自然的")) {
 		style = openai.CreateImageStyleNatural
 	}
 	quality := openai.CreateImageQualityStandard
-	if strings.HasSuffix(config.Model, "-hd") {
+	model := config.GetModel()
+	if strings.HasSuffix(model, "-hd") {
 		quality = openai.CreateImageQualityHD
-		config.Model = config.Model[0 : len(config.Model)-3]
+		model = model[0 : len(model)-3]
 	}
 	r, err := c.CreateImage(context.Background(), openai.ImageRequest{
 		Prompt:         prompt,
-		Model:          config.Model,
+		Model:          model,
 		Quality:        quality,
-		Size:           config.Size,
+		Size:           config.GetSize(),
 		Style:          style,
 		ResponseFormat: openai.CreateImageResponseFormatURL,
 	})
diff --git a/llm/zhipu/gc.go b/llm/zhipu/gc.go
index 82f404a..57bf486 100644
--- a/llm/zhipu/gc.go
+++ b/llm/zhipu/gc.go
@@ -24,10 +24,9 @@ func (lm *LLM) MakeImage(prompt string, config llm.GCConfig) ([]string, error) {
 		return nil, err
 	}
 
+	config.SetDefault(&lm.config.GCConfig)
 	cc := c.ImageGeneration(config.Model).SetPrompt(prompt)
-	if config.Size != "" {
-		cc.SetSize(config.Size)
-	}
+	cc.SetSize(config.GetSize())
 
 	if r, err := cc.Do(context.Background()); err == nil {
 		results := make([]string, 0)
@@ -56,10 +55,9 @@ func (lm *LLM) MakeVideo(prompt string, config llm.GCConfig) ([]string, []string
 		return nil, nil, err
 	}
 
+	config.SetDefault(&lm.config.GCConfig)
 	cc := c.VideoGeneration(config.Model).SetPrompt(prompt)
-	if config.Ref != "" {
-		cc.SetImageURL(config.Ref)
-	}
+	cc.SetImageURL(config.GetRef())
 
 	if resp, err := cc.Do(context.Background()); err == nil {
 		for i := 0; i < 1200; i++ {
diff --git a/tests/chat_test.go b/tests/chat_test.go
index 44c171b..e58ce2a 100644
--- a/tests/chat_test.go
+++ b/tests/chat_test.go
@@ -4,6 +4,7 @@ import (
 	"apigo.cc/ai/ai"
 	"apigo.cc/ai/ai/js"
 	"apigo.cc/ai/ai/llm"
+	"encoding/hex"
 	"fmt"
 	"github.com/ssgo/u"
 	"testing"
@@ -32,8 +33,9 @@ func TestAgent(t *testing.T) {
 	//testMakeImage(t, "glm", "", keys.Zhipu, "冬天大雪纷飞，一个男人身穿军绿色棉大衣，戴着红色围巾和绿色帽子走在铺面大雪的小镇路上", "")
 	//testMakeVideo(t, "glm", "", keys.Zhipu, "大雪纷飞，男人蹦蹦跳跳", "https://aigc-files.bigmodel.cn/api/cogview/20240904133130c4b7121019724aa3_0.png")
 
-	testJS(t)
+	//testJS(t)
 	//testFile(t)
+	testUtil(t)
 }
 
 func testChat(t *testing.T, llmName string) {
@@ -196,7 +198,7 @@ func testMakeVideo(t *testing.T, llmName, prompt, refImage string) {
 }
 
 func testJS(t *testing.T) {
-	r1, err := js.RunFile("test.js", "1+2=4吗")
+	r1, err := ai.RunFile("test.js", "1+2=4吗")
 	if err != nil {
 		t.Fatal("发生错误", err.Error())
 	}
@@ -209,7 +211,7 @@ func testJS(t *testing.T) {
 }
 
 func testFile(t *testing.T) {
-	r1, err := js.Run(`
+	r1, err := ai.Run(`
 import fs from './lib/file'
 import out from './lib/console'
 let r = fs.read('test.js')
@@ -222,3 +224,28 @@ return r
 	fmt.Println()
 	fmt.Println("result:", r1)
 }
+
+func testUtil(t *testing.T) {
+	fmt.Println(hex.EncodeToString(u.Sha256([]byte{0, 98, 2})))
+	r, err := ai.Run(`
+let s = String.fromCharCode(0, 98, 2)
+//let r = util.base64(s)
+//let r2 = util.unBase64(r)
+//console.info(r)
+//console.info(r2.length, r2)
+//console.info(s.charCodeAt(0), r2.charCodeAt(0))
+//return r2 === s
+let r = util.hex(util.sha256(s))
+console.info(r)
+return r == '278f25d5e7c09b2cdde1ed72dd83fbb7a7d7dd668ef967c9af65f68aa04049cd'
+`, "test.js")
+	if err != nil {
+		t.Fatal("发生错误", err.Error())
+	}
+	if r != true {
+		t.Fatal("运行结果不正确", r)
+	}
+
+	fmt.Println()
+	fmt.Println("result:", r)
+}