diff --git a/crates/rspack_binding_api/src/raw_options/raw_external.rs b/crates/rspack_binding_api/src/raw_options/raw_external.rs
index 7fad146f9d78..b24a87aa7f79 100644
--- a/crates/rspack_binding_api/src/raw_options/raw_external.rs
+++ b/crates/rspack_binding_api/src/raw_options/raw_external.rs
@@ -6,8 +6,8 @@ use napi::{
 };
 use napi_derive::napi;
 use rspack_core::{
-  ExternalItem, ExternalItemFnCtx, ExternalItemFnResult, ExternalItemValue,
-  ResolveOptionsWithDependencyType, ResolverFactory,
+  Context, DependencyCategory, ExternalItem, ExternalItemFnCtx, ExternalItemFnResult,
+  ExternalItemValue, ResolveOptionsWithDependencyType, ResolverFactory,
 };
 use rspack_napi::threadsafe_function::ThreadsafeFunction;
 use rspack_regex::RspackRegex;
@@ -90,8 +90,8 @@ pub struct RawExternalItemFnCtxData<'a> {
 #[derive(Debug)]
 struct RawExternalItemFnCtxInner {
   request: String,
-  context: String,
-  dependency_type: String,
+  context: Context,
+  dependency_type: DependencyCategory,
   context_info: ContextInfo,
   resolve_options_with_dependency_type: Arc<ResolveOptionsWithDependencyType>,
   resolver_factory: Arc<ResolverFactory>,
diff --git a/crates/rspack_core/src/options/externals.rs b/crates/rspack_core/src/options/externals.rs
index 7021ef10b5b0..82e639226754 100644
--- a/crates/rspack_core/src/options/externals.rs
+++ b/crates/rspack_core/src/options/externals.rs
@@ -5,7 +5,7 @@ use rspack_error::Result;
 use rspack_regex::RspackRegex;
 use rustc_hash::FxHashMap as HashMap;
 
-use crate::{ResolveOptionsWithDependencyType, ResolverFactory};
+use crate::{Context, DependencyCategory, ResolveOptionsWithDependencyType, ResolverFactory};
 
 pub type Externals = Vec<ExternalItem>;
 
@@ -26,8 +26,8 @@ pub struct ContextInfo {
 
 pub struct ExternalItemFnCtx {
   pub request: String,
-  pub context: String,
-  pub dependency_type: String,
+  pub context: Context,
+  pub dependency_type: DependencyCategory,
   pub context_info: ContextInfo,
   pub resolve_options_with_dependency_type: ResolveOptionsWithDependencyType,
   pub resolver_factory: Arc<ResolverFactory>,
diff --git a/crates/rspack_plugin_externals/src/http_externals_plugin.rs b/crates/rspack_plugin_externals/src/http_externals_plugin.rs
index f4a9ff7b8a76..9921a5711198 100644
--- a/crates/rspack_plugin_externals/src/http_externals_plugin.rs
+++ b/crates/rspack_plugin_externals/src/http_externals_plugin.rs
@@ -1,5 +1,6 @@
 use rspack_core::{
-  BoxPlugin, ExternalItem, ExternalItemFnCtx, ExternalItemFnResult, ExternalItemValue, PluginExt,
+  BoxPlugin, DependencyCategory, ExternalItem, ExternalItemFnCtx, ExternalItemFnResult,
+  ExternalItemValue, PluginExt,
 };
 
 use crate::ExternalsPlugin;
@@ -25,14 +26,14 @@ pub fn http_externals_rspack_plugin(css: bool, web_async: bool) -> BoxPlugin {
 fn http_external_item_web(css: bool) -> ExternalItem {
   ExternalItem::Fn(Box::new(move |ctx: ExternalItemFnCtx| {
     Box::pin(async move {
-      if ctx.dependency_type == "url" {
+      if ctx.dependency_type == DependencyCategory::Url {
         if is_external_http_request(&ctx.request) {
           return Ok(ExternalItemFnResult {
             external_type: Some("asset".to_owned()),
             result: Some(ExternalItemValue::String(ctx.request)),
           });
         }
-      } else if css && ctx.dependency_type == "css-import" {
+      } else if css && ctx.dependency_type == DependencyCategory::CssImport {
         if is_external_http_request(&ctx.request) {
           return Ok(ExternalItemFnResult {
             external_type: Some("css-import".to_owned()),
@@ -63,14 +64,14 @@ fn http_external_item_web(css: bool) -> ExternalItem {
 fn http_external_item_web_async(css: bool) -> ExternalItem {
   ExternalItem::Fn(Box::new(move |ctx: ExternalItemFnCtx| {
     Box::pin(async move {
-      if ctx.dependency_type == "url" {
+      if ctx.dependency_type == DependencyCategory::Url {
         if is_external_http_request(&ctx.request) {
           return Ok(ExternalItemFnResult {
             external_type: Some("asset".to_owned()),
             result: Some(ExternalItemValue::String(ctx.request)),
           });
         }
-      } else if css && ctx.dependency_type == "css-import" {
+      } else if css && ctx.dependency_type == DependencyCategory::CssImport {
         if is_external_http_request(&ctx.request) {
           return Ok(ExternalItemFnResult {
             external_type: Some("css-import".to_owned()),
diff --git a/crates/rspack_plugin_externals/src/plugin.rs b/crates/rspack_plugin_externals/src/plugin.rs
index 4205f392b0d4..bf121c9cd55a 100644
--- a/crates/rspack_plugin_externals/src/plugin.rs
+++ b/crates/rspack_plugin_externals/src/plugin.rs
@@ -184,9 +184,9 @@ async fn factorize(&self, data: &mut ModuleFactoryCreateData) -> Result<Option<B
       ExternalItem::Fn(f) => {
         let request = dependency.request();
         let result = f(ExternalItemFnCtx {
-          context: context.to_string(),
+          context: context.clone(),
           request: request.to_string(),
-          dependency_type: dependency.category().to_string(),
+          dependency_type: *dependency.category(),
           context_info: ContextInfo {
             issuer: data
               .issuer