rolldown · underfin · Aug 23, 2024 · Aug 23, 2024
diff --git a/crates/rolldown/src/stages/generate_stage/render_chunk_to_assets.rs b/crates/rolldown/src/stages/generate_stage/render_chunk_to_assets.rs
@@ -90,6 +90,7 @@ impl<'a> GenerateStage<'a> {
               outputs.push(Output::Asset(Box::new(OutputAsset {
                 filename: map_filename.clone(),
                 source: source.into(),
+                original_file_name: None,
                 name: None,
               })));
               code.push_str(&format!("\n//# sourceMappingURL={map_filename}"));

diff --git a/crates/rolldown_binding/src/options/plugin/types/binding_emitted_asset.rs b/crates/rolldown_binding/src/options/plugin/types/binding_emitted_asset.rs
@@ -9,11 +9,17 @@ use super::binding_asset_source::BindingAssetSource;
 pub struct BindingEmittedAsset {
   pub name: Option<String>,
   pub file_name: Option<String>,
+  pub original_file_name: Option<String>,
   pub source: BindingAssetSource,
 }
 
 impl From<BindingEmittedAsset> for rolldown_common::EmittedAsset {
   fn from(value: BindingEmittedAsset) -> Self {
-    Self { name: value.name, file_name: value.file_name, source: value.source.into() }
+    Self {
+      name: value.name,
+      file_name: value.file_name,
+      source: value.source.into(),
+      original_file_name: value.original_file_name,
+    }
   }
 }
diff --git a/crates/rolldown_binding/src/types/binding_output_asset.rs b/crates/rolldown_binding/src/types/binding_output_asset.rs
@@ -18,6 +18,11 @@ impl BindingOutputAsset {
     self.inner.filename.clone()
   }
 
+  #[napi(getter)]
+  pub fn original_file_name(&self) -> Option<String> {
+    self.inner.original_file_name.clone()
+  }
+
   #[napi(getter)]
   pub fn source(&self) -> BindingAssetSource {
     self.inner.source.clone().into()

diff --git a/crates/rolldown_common/src/file_emitter.rs b/crates/rolldown_common/src/file_emitter.rs
@@ -10,6 +10,7 @@ use std::sync::Arc;
 #[derive(Debug)]
 pub struct EmittedAsset {
   pub name: Option<String>,
+  pub original_file_name: Option<String>,
   pub file_name: Option<String>,
   pub source: AssetSource,
 }
@@ -88,6 +89,7 @@ impl FileEmitter {
         filename: value.file_name.clone().expect("should have file name"),
         source: value.source.clone(),
         name: value.name.clone(),
+        original_file_name: value.original_file_name.clone(),
       })));
     }
   }

diff --git a/crates/rolldown_common/src/types/output.rs b/crates/rolldown_common/src/types/output.rs
@@ -3,6 +3,7 @@ use crate::{AssetSource, OutputChunk};
 #[derive(Debug)]
 pub struct OutputAsset {
   pub name: Option<String>,
+  pub original_file_name: Option<String>,
   pub filename: String,
   pub source: AssetSource,
 }

diff --git a/crates/rolldown_plugin_manifest/src/lib.rs b/crates/rolldown_plugin_manifest/src/lib.rs
@@ -110,6 +110,7 @@ impl Plugin for ManifestPlugin {
     ctx.emit_file(EmittedAsset {
       file_name: Some(self.config.out_path.clone()),
       name: None,
+      original_file_name: None,
       source: (serde_json::to_string_pretty(&manifest).unwrap()).into(),
     });
     // }

diff --git a/crates/rolldown_plugin_wasm_helper/src/lib.rs b/crates/rolldown_plugin_wasm_helper/src/lib.rs
@@ -41,6 +41,7 @@ impl Plugin for WasmHelperPlugin {
       let file_path = Path::new(&id);
       let reference_id = ctx.emit_file(EmittedAsset {
         name: file_path.file_name().map(|x| x.to_string_lossy().to_string()),
+        original_file_name: None,
         source: AssetSource::Buffer(fs::read(file_path)?),
         file_name: None,
       });

diff --git a/packages/rolldown/src/binding.d.ts b/packages/rolldown/src/binding.d.ts
@@ -18,6 +18,7 @@ export declare class BindingModuleInfo {
 
 export declare class BindingOutputAsset {
   get fileName(): string
+  get originalFileName(): string | null
   get source(): BindingAssetSource
   set source(source: BindingAssetSource)
   get name(): string | null
@@ -135,6 +136,7 @@ export declare enum BindingBuiltinPluginName {
 export interface BindingEmittedAsset {
   name?: string
   fileName?: string
+  originalFileName?: string
   source: BindingAssetSource
 }
 

diff --git a/packages/rolldown/src/plugin/plugin-context.ts b/packages/rolldown/src/plugin/plugin-context.ts
@@ -20,6 +20,7 @@ export interface EmittedAsset {
   type: 'asset'
   name?: string
   fileName?: string
+  originalFileName?: string | null
   source: AssetSource
 }
 
@@ -113,6 +114,7 @@ export class PluginContext {
       }
       return context.emitFile({
         ...file,
+        originalFileName: file.originalFileName || undefined,
         source: bindingAssetSource(file.source),
       })
     }

diff --git a/packages/rolldown/src/rolldown-binding.wasi-browser.js b/packages/rolldown/src/rolldown-binding.wasi-browser.js
@@ -114,18 +114,18 @@ function __napi_rs_initialize_modules(__napiInstance) {
   __napiInstance.exports['__napi_register__BindingModuleInfo_struct_54']?.()
   __napiInstance.exports['__napi_register__BindingModuleInfo_impl_56']?.()
   __napiInstance.exports['__napi_register__BindingOutputAsset_struct_57']?.()
-  __napiInstance.exports['__napi_register__BindingOutputAsset_impl_62']?.()
-  __napiInstance.exports['__napi_register__BindingOutputChunk_struct_63']?.()
-  __napiInstance.exports['__napi_register__BindingOutputChunk_impl_81']?.()
-  __napiInstance.exports['__napi_register__BindingOutputs_struct_82']?.()
-  __napiInstance.exports['__napi_register__BindingOutputs_impl_86']?.()
-  __napiInstance.exports['__napi_register__FinalBindingOutputs_struct_87']?.()
-  __napiInstance.exports['__napi_register__FinalBindingOutputs_impl_90']?.()
-  __napiInstance.exports['__napi_register__RenderedChunk_struct_91']?.()
-  __napiInstance.exports['__napi_register__BindingRenderedModule_struct_92']?.()
-  __napiInstance.exports['__napi_register__AliasItem_struct_93']?.()
-  __napiInstance.exports['__napi_register__BindingSourcemap_struct_94']?.()
-  __napiInstance.exports['__napi_register__BindingJsonSourcemap_struct_95']?.()
+  __napiInstance.exports['__napi_register__BindingOutputAsset_impl_63']?.()
+  __napiInstance.exports['__napi_register__BindingOutputChunk_struct_64']?.()
+  __napiInstance.exports['__napi_register__BindingOutputChunk_impl_82']?.()
+  __napiInstance.exports['__napi_register__BindingOutputs_struct_83']?.()
+  __napiInstance.exports['__napi_register__BindingOutputs_impl_87']?.()
+  __napiInstance.exports['__napi_register__FinalBindingOutputs_struct_88']?.()
+  __napiInstance.exports['__napi_register__FinalBindingOutputs_impl_91']?.()
+  __napiInstance.exports['__napi_register__RenderedChunk_struct_92']?.()
+  __napiInstance.exports['__napi_register__BindingRenderedModule_struct_93']?.()
+  __napiInstance.exports['__napi_register__AliasItem_struct_94']?.()
+  __napiInstance.exports['__napi_register__BindingSourcemap_struct_95']?.()
+  __napiInstance.exports['__napi_register__BindingJsonSourcemap_struct_96']?.()
 }
 export const BindingLog = __napiModule.exports.BindingLog
 export const BindingModuleInfo = __napiModule.exports.BindingModuleInfo

diff --git a/packages/rolldown/src/rolldown-binding.wasi.cjs b/packages/rolldown/src/rolldown-binding.wasi.cjs
@@ -138,18 +138,18 @@ function __napi_rs_initialize_modules(__napiInstance) {
   __napiInstance.exports['__napi_register__BindingModuleInfo_struct_54']?.()
   __napiInstance.exports['__napi_register__BindingModuleInfo_impl_56']?.()
   __napiInstance.exports['__napi_register__BindingOutputAsset_struct_57']?.()
-  __napiInstance.exports['__napi_register__BindingOutputAsset_impl_62']?.()
-  __napiInstance.exports['__napi_register__BindingOutputChunk_struct_63']?.()
-  __napiInstance.exports['__napi_register__BindingOutputChunk_impl_81']?.()
-  __napiInstance.exports['__napi_register__BindingOutputs_struct_82']?.()
-  __napiInstance.exports['__napi_register__BindingOutputs_impl_86']?.()
-  __napiInstance.exports['__napi_register__FinalBindingOutputs_struct_87']?.()
-  __napiInstance.exports['__napi_register__FinalBindingOutputs_impl_90']?.()
-  __napiInstance.exports['__napi_register__RenderedChunk_struct_91']?.()
-  __napiInstance.exports['__napi_register__BindingRenderedModule_struct_92']?.()
-  __napiInstance.exports['__napi_register__AliasItem_struct_93']?.()
-  __napiInstance.exports['__napi_register__BindingSourcemap_struct_94']?.()
-  __napiInstance.exports['__napi_register__BindingJsonSourcemap_struct_95']?.()
+  __napiInstance.exports['__napi_register__BindingOutputAsset_impl_63']?.()
+  __napiInstance.exports['__napi_register__BindingOutputChunk_struct_64']?.()
+  __napiInstance.exports['__napi_register__BindingOutputChunk_impl_82']?.()
+  __napiInstance.exports['__napi_register__BindingOutputs_struct_83']?.()
+  __napiInstance.exports['__napi_register__BindingOutputs_impl_87']?.()
+  __napiInstance.exports['__napi_register__FinalBindingOutputs_struct_88']?.()
+  __napiInstance.exports['__napi_register__FinalBindingOutputs_impl_91']?.()
+  __napiInstance.exports['__napi_register__RenderedChunk_struct_92']?.()
+  __napiInstance.exports['__napi_register__BindingRenderedModule_struct_93']?.()
+  __napiInstance.exports['__napi_register__AliasItem_struct_94']?.()
+  __napiInstance.exports['__napi_register__BindingSourcemap_struct_95']?.()
+  __napiInstance.exports['__napi_register__BindingJsonSourcemap_struct_96']?.()
 }
 module.exports.BindingLog = __napiModule.exports.BindingLog
 module.exports.BindingModuleInfo = __napiModule.exports.BindingModuleInfo

diff --git a/packages/rolldown/src/rollup.d.ts b/packages/rolldown/src/rollup.d.ts
@@ -907,6 +907,7 @@ export interface SerializedTimings {
 
 export interface PreRenderedAsset {
   name: string | undefined
+  originalFileName: string | null
   source: string | Uint8Array
   type: 'asset'
 }

diff --git a/packages/rolldown/src/types/rolldown-output.ts b/packages/rolldown/src/types/rolldown-output.ts
@@ -10,6 +10,7 @@ import type { RenderedModule } from './rendered-module'
 export interface RolldownOutputAsset {
   type: 'asset'
   fileName: string
+  originalFileName: string | null
   source: AssetSource
   name: string | undefined
 }

diff --git a/packages/rolldown/src/utils/transform-to-rollup-output.ts b/packages/rolldown/src/utils/transform-to-rollup-output.ts
@@ -68,6 +68,7 @@ function transformToRollupOutputAsset(
   return {
     type: 'asset',
     fileName: asset.fileName,
+    originalFileName: asset.originalFileName || null,
     get source(): AssetSource {
       return transformAssetSource(asset.source)
     },

diff --git a/packages/rolldown/tests/fixtures/plugin/context/emit-file/_config.ts b/packages/rolldown/tests/fixtures/plugin/context/emit-file/_config.ts
@@ -7,6 +7,8 @@ import path from 'node:path'
 
 let referenceId: string
 
+const ORIGINAL_FILE_NAME = 'original.txt'
+
 export default defineTest({
   config: {
     output: {
@@ -21,6 +23,7 @@ export default defineTest({
             type: 'asset',
             name: '+emitted.txt',
             source: 'emitted',
+            originalFileName: ORIGINAL_FILE_NAME,
           })
         },
         generateBundle() {
@@ -45,6 +48,7 @@ export default defineTest({
           expect(asset.fileName).toMatchInlineSnapshot(
             `"_emitted-umwR9Fta.txt"`,
           )
+          expect(asset.originalFileName).toBe(ORIGINAL_FILE_NAME)
           break
 
         case 'icon.png':