feat(server): adapt doc loader for server native (#9942)

packages/common/native/src/doc_loader/loader/mod.rs

@@ -1,5 +1,4 @@
 mod docx;
-mod error;
 mod html;
 mod pdf;
 mod source;
@@ -11,11 +10,8 @@ use super::*;
 
 // modified from https://github.com/Abraxas-365/langchain-rust/tree/v4.6.0/src/document_loaders
 pub trait Loader: Send + Sync {
-  fn load(self) -> Result<Vec<Document>, LoaderError>;
-  fn load_and_split<TS: TextSplitter + 'static>(
-    self,
-    splitter: TS,
-  ) -> Result<Vec<Document>, LoaderError>
+  fn load(self) -> LoaderResult<Vec<Document>>;
+  fn load_and_split<TS: TextSplitter + 'static>(self, splitter: TS) -> LoaderResult<Vec<Document>>
   where
     Self: Sized,
   {
@@ -25,7 +21,6 @@ pub trait Loader: Send + Sync {
 }
 
 pub use docx::DocxLoader;
-pub use error::{LoaderError, LoaderResult};
 pub use html::HtmlLoader;
 pub use pdf::PdfExtractLoader;
 pub use source::{get_language_by_filename, LanguageParserOptions, SourceCodeLoader};