diff --git a/src/compile.rs b/src/compile.rs
index d5d591c..20c527d 100644
--- a/src/compile.rs
+++ b/src/compile.rs
@@ -4,6 +4,7 @@ use crate::{
     runtime::{ModuleInstance, Runtime},
 };
 use anyhow::anyhow;
+use core::panic;
 use std::{io::Result, path::PathBuf, sync::Arc};
 use v8::Isolate;
 
@@ -11,7 +12,7 @@ use v8::Isolate;
 pub struct ModuleDependency {
     pub deps: Vec<String>,
     pub async_deps: Vec<String>,
-    pub specifier: Vec<String>,
+    pub specifiers: Vec<String>,
     pub source: String,
     pub map: Option<String>,
     pub filename: String,
@@ -19,7 +20,7 @@ pub struct ModuleDependency {
 }
 
 impl ModuleDependency {
-    pub fn initialize(&self, isolate: &mut Isolate) -> Option<()> {
+    pub fn initialize(&self, isolate: &mut Isolate) -> anyhow::Result<()> {
         let graph_rc = Runtime::graph(isolate);
 
         {
@@ -28,25 +29,25 @@ impl ModuleDependency {
 
             let module = module.borrow();
             if module.get(&self.filename).is_some() {
-                return Some(());
+                return Ok(());
             }
         }
 
         // {
-        self.deps.iter().for_each(|url| {
-            let state = graph_rc.borrow();
-            let graph = state.table.borrow();
+        let state = graph_rc.borrow();
+        let graph = state.table.borrow();
+        for url in self.deps.iter() {
             let url = resolve(url, &self.filename);
             let dep = graph.get(&url).unwrap();
-            dep.initialize(isolate);
-        });
+            dep.initialize(isolate)?
+        }
 
         // }
-        self.instantiate_module(isolate);
+        self.instantiate_module(isolate)?;
 
-        return Some(());
+        Ok(())
     }
-    fn instantiate_module(&self, isolate: &mut Isolate) {
+    fn instantiate_module(&self, isolate: &mut Isolate) -> anyhow::Result<()> {
         let state_rc = Runtime::state(isolate);
         let graph_rc = Runtime::graph(isolate);
 
@@ -80,9 +81,13 @@ impl ModuleDependency {
             .insert(module_id, self.filename.clone());
 
         let tc_scope = &mut v8::TryCatch::new(scope);
-        module
-            .instantiate_module(tc_scope, Runtime::resolve_module_callback)
-            .unwrap();
+        let result = module.instantiate_module(tc_scope, Runtime::resolve_module_callback);
+        if result.is_none() {
+            let expection = tc_scope.exception().unwrap();
+            let msg = expection.to_rust_string_lossy(tc_scope);
+            return Err(anyhow!("{}", msg));
+        }
+
         let expose = &module.get_module_namespace();
         let v8_module = v8::Global::new(tc_scope, module);
         let expose = v8::Global::new(tc_scope, expose);
@@ -95,6 +100,7 @@ impl ModuleDependency {
                 expose,
             },
         );
+        Ok(())
     }
 
     pub fn evaluate(&self, isolate: &mut Isolate) {
diff --git a/src/compile_oxc.rs b/src/compile_oxc.rs
index 3d0c34f..e770f66 100644
--- a/src/compile_oxc.rs
+++ b/src/compile_oxc.rs
@@ -1,11 +1,12 @@
+use core::panic;
+
 use anyhow::anyhow;
 use oxc_allocator::Allocator;
-use oxc_ast::{AstKind, Visit};
+use oxc_ast::{ast::ImportAttribute, AstKind, Visit};
 use oxc_codegen::{Codegen, CodegenOptions};
 use oxc_semantic::SemanticBuilder;
 use oxc_span::{GetSpan, SourceType};
 use oxc_transformer::{TransformOptions, TransformTarget, Transformer};
-use tracing::Instrument;
 
 use crate::compile::ModuleDependency;
 
@@ -13,6 +14,9 @@ use crate::compile::ModuleDependency;
 struct ImportParser {
     sync_imports: Vec<String>,
     async_imports: Vec<String>,
+    specifiers: Vec<String>,
+    namespaces: Vec<String>,
+    default_import: bool,
 }
 
 impl<'a> oxc_ast::Visit<'a> for ImportParser {
@@ -35,13 +39,17 @@ impl<'a> oxc_ast::Visit<'a> for ImportParser {
         use oxc_ast::ast::ImportDeclarationSpecifier;
         match specifier {
             ImportDeclarationSpecifier::ImportSpecifier(import_specifer) => {
-                println!("ImportDeclarationSpecifier: {:?}", import_specifer.span);
+                // println!("ImportSpecifier: {:?}", import_specifer.imported.name());
+                self.specifiers
+                    .push(import_specifer.imported.name().to_string());
             }
-            ImportDeclarationSpecifier::ImportDefaultSpecifier(import_specfier) => {
-                println!("ImportDeclarationSpecifier: {:?}", import_specfier.span);
+            ImportDeclarationSpecifier::ImportDefaultSpecifier(_import_specfier) => {
+                // println!("ImportDefaultSpecifier: {:?}", import_specfier);
+                self.default_import = true;
             }
             ImportDeclarationSpecifier::ImportNamespaceSpecifier(import_specifer) => {
-                println!("ImportDeclarationSpecifier: {:?}", import_specifer.span);
+                // println!("ImportNamespaceSpecifier: {:?}", import_specifer);
+                self.namespaces.push(import_specifer.local.name.to_string());
             }
         }
     }
@@ -55,24 +63,24 @@ impl<'a> oxc_ast::Visit<'a> for ImportParser {
     }
 }
 
-pub fn compile(file_name: &str, source_text: &str) -> anyhow::Result<ModuleDependency> {
+pub fn compile(file_name: &str, content: &str) -> anyhow::Result<ModuleDependency> {
     let allo = Allocator::default();
     let source_type = oxc_span::SourceType::from_path(file_name).unwrap();
 
-    let ret = oxc_parser::Parser::new(&allo, &source_text, source_type).parse();
+    let ret = oxc_parser::Parser::new(&allo, &content, source_type).parse();
 
     if !ret.errors.is_empty() {
         for error in ret.errors {
-            let error = error.with_source_code(source_text.to_string());
+            let error = error.with_source_code(content.to_string());
             println!("{error:?}");
         }
         return Err(anyhow!("compile error"));
     }
 
-    let mut pass = ImportParser::default();
-    pass.visit_program(&ret.program);
+    let mut import_parser = ImportParser::default();
+    import_parser.visit_program(&ret.program);
 
-    let semantic = SemanticBuilder::new(&source_text, source_type)
+    let semantic = SemanticBuilder::new(&content, source_type)
         .with_trivias(ret.trivias)
         .build(&ret.program)
         .semantic;
@@ -80,16 +88,21 @@ pub fn compile(file_name: &str, source_text: &str) -> anyhow::Result<ModuleDepen
     let program = allo.alloc(ret.program);
     let transform_options = TransformOptions::default();
 
-    Transformer::new(&allo, source_type, semantic, transform_options)
-        .build(program)
-        .unwrap();
+    let transformer = Transformer::new(&allo, source_type, semantic, transform_options);
+
+    if let Err(errors) = transformer.build(program) {
+        for err in errors {
+            println!("{}", err);
+        }
+        panic!("");
+    }
 
-    let code = Codegen::<false>::new(source_text.len(), CodegenOptions).build(program);
+    let code = Codegen::<true>::new(content.len(), CodegenOptions).build(program);
 
     Ok(ModuleDependency {
-        deps: pass.sync_imports,
-        async_deps: pass.async_imports,
-        specifier: vec![],
+        deps: import_parser.sync_imports,
+        async_deps: import_parser.async_imports,
+        specifiers: import_parser.specifiers,
         source: code,
         map: None,
         filename: file_name.to_string(),
diff --git a/src/main.rs b/src/main.rs
index f9cc960..6415b95 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,8 +9,9 @@ mod compile_oxc;
 use graph::resolve;
 use graph::DependencyGraph;
 use runtime::Runtime;
+use tokio::main;
 
-#[tokio::main]
+#[main]
 async fn main() -> anyhow::Result<()> {
     let args = env::args().collect::<Vec<_>>();
     if args.len() <= 1 {
diff --git a/src/runtime/asynchronous.rs b/src/runtime/asynchronous.rs
index ed94b53..fdc17d8 100644
--- a/src/runtime/asynchronous.rs
+++ b/src/runtime/asynchronous.rs
@@ -11,13 +11,10 @@ pub enum AsynchronousKind {
 }
 
 impl AsynchronousKind {
-    pub fn exec(&self, isolate: &mut Isolate) -> Poll<()> {
-        match match self {
+    pub fn exec(&self, isolate: &mut Isolate) -> anyhow::Result<Poll<()>> {
+        match self {
             AsynchronousKind::Operation(id) => Self::operation(isolate, id.clone()),
             AsynchronousKind::Import((source, resolver)) => Self::import(isolate, source, resolver),
-        } {
-            Ok(v) => v,
-            Err(e) => panic!("error {}", e),
         }
     }
 
@@ -83,7 +80,7 @@ impl AsynchronousKind {
             .get(source)
             .ok_or(anyhow!("source `{}` not found", source))?;
 
-        if dep.initialize(isolate).is_some() {
+        if dep.initialize(isolate).is_ok() {
             dep.evaluate(isolate);
 
             let scope = &mut v8::HandleScope::with_context(isolate, context);
@@ -103,9 +100,9 @@ impl AsynchronousKind {
         let module = graph.module.borrow();
         if module.get(source).is_none() {
             let t = table.get(source).unwrap();
-            t.initialize(isolate);
+            t.initialize(isolate)?;
         }
 
-        return Ok(Poll::Ready(()));
+        Ok(Poll::Ready(()))
     }
 }
diff --git a/src/runtime/mod.rs b/src/runtime/mod.rs
index 3fe1fae..f335731 100644
--- a/src/runtime/mod.rs
+++ b/src/runtime/mod.rs
@@ -6,6 +6,7 @@ use std::{
 use crate::{compile, graph::DependencyGraph};
 use futures::{stream::FuturesUnordered, Future, StreamExt};
 use tokio::sync::mpsc::{self, Receiver, Sender};
+use tracing::Instrument;
 use v8::{Isolate, OwnedIsolate};
 
 mod asynchronous;
@@ -123,7 +124,7 @@ impl Runtime {
             &include_str!("../../bootstrap/main.ts").to_string(),
         )?;
 
-        dependency.initialize(isolate);
+        dependency.initialize(isolate)?;
         dependency.evaluate(isolate);
 
         //
@@ -178,7 +179,11 @@ impl Runtime {
                     }
                     result
                 } {
-                    break op.exec(isolate);
+                    match op.exec(isolate) {
+                        Ok(v) => break v,
+                        Err(err) => eprintln!("{err:?}"),
+                    }
+                    break Poll::Ready(());
                 }
                 break Poll::Pending;
             })
diff --git a/src/runtime/static_fn.rs b/src/runtime/static_fn.rs
index a8a719f..6ecdecf 100644
--- a/src/runtime/static_fn.rs
+++ b/src/runtime/static_fn.rs
@@ -6,7 +6,7 @@ use url::Url;
 impl Runtime {
     pub fn resolve_module_callback<'s>(
         context: v8::Local<'s, v8::Context>,
-        specifier: v8::Local<'s, v8::String>,
+        source: v8::Local<'s, v8::String>,
         _import_assertions: v8::Local<'s, v8::FixedArray>,
         referrer: v8::Local<'s, v8::Module>,
     ) -> Option<v8::Local<'s, v8::Module>> {
@@ -16,7 +16,7 @@ impl Runtime {
 
         let state = graph_rc.borrow();
 
-        let source = specifier.to_rust_string_lossy(scope);
+        let source = source.to_rust_string_lossy(scope);
 
         let url = if source.starts_with("http") {
             let url = Url::parse(&source).expect(format!("parse url failed: {}", source).as_str());
@@ -38,7 +38,7 @@ impl Runtime {
             .expect(format!("get module failure: {}", url).as_str());
         let module = v8::Local::new(scope, &info.module);
 
-        return Some(module);
+        Some(module)
     }
 
     pub fn dynamically_import<'a>(
diff --git a/test/test.ts b/test/test.ts
index 8c1be76..3e6028d 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -1,9 +1,9 @@
-// import "https://deno.land/std@0.182.0/examples/welcome.ts";
-// import "https://deno.land/std@0.182.0/examples/welcome.ts";
-import "./welcome.ts"
+// import {a ,b,c} from  "https://deno.land/std@0.182.0/examples/welcome.ts";
+import "https://deno.land/std@0.182.0/examples/welcome.ts";
+import {a} from  "./welcome.ts"
 
 // const res = await import("./test1.ts");
-// console.log("res", res);
+console.log(a);
 // const text = await res.json();
 // console.log("🚀 text", text);
 // test.copy();
diff --git a/test/welcome.ts b/test/welcome.ts
index 998c238..e7fad9c 100644
--- a/test/welcome.ts
+++ b/test/welcome.ts
@@ -1 +1,4 @@
 console.log("Welcome edon!");
+
+const a = 1;
+export {a}