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use anyhow::Result;
use indoc::formatdoc;
use turbo_tasks::{ResolvedVc, TryJoinIterExt, Vc};
use turbopack_core::{
chunk::{
ChunkData, ChunkItem, ChunkType, ChunkingContext, ChunkingContextExt, ChunksData,
ModuleChunkItemIdExt,
},
ident::AssetIdent,
module::Module,
module_graph::{
ModuleGraph, chunk_group_info::ChunkGroup, module_batch::ChunkableModuleOrBatch,
},
output::OutputAssets,
};
use crate::{
async_chunk::module::AsyncLoaderModule,
chunk::{
EcmascriptChunkItem, EcmascriptChunkItemContent, EcmascriptChunkPlaceable,
EcmascriptChunkType, data::EcmascriptChunkData,
},
runtime_functions::{TURBOPACK_EXPORT_VALUE, TURBOPACK_LOAD},
utils::{StringifyJs, StringifyModuleId},
};
#[turbo_tasks::value(shared)]
pub struct AsyncLoaderChunkItem {
pub module: ResolvedVc<AsyncLoaderModule>,
pub module_graph: ResolvedVc<ModuleGraph>,
pub chunking_context: ResolvedVc<Box<dyn ChunkingContext>>,
}
#[turbo_tasks::value_impl]
impl AsyncLoaderChunkItem {
#[turbo_tasks::function]
pub(super) async fn chunks(&self) -> Result<Vc<OutputAssets>> {
let module = self.module.await?;
if let Some(chunk_items) = module.availability_info.available_modules() {
let inner_module = ResolvedVc::upcast(module.inner);
let batches = self
.module_graph
.module_batches(self.chunking_context.batching_config())
.await?;
let module_or_batch = batches.get_entry(inner_module).await?;
if let Some(chunkable_module_or_batch) =
ChunkableModuleOrBatch::from_module_or_batch(module_or_batch)
&& *chunk_items.get(chunkable_module_or_batch).await?
{
return Ok(Vc::cell(vec![]));
}
}
Ok(self.chunking_context.chunk_group_assets(
module.inner.ident(),
ChunkGroup::Async(ResolvedVc::upcast(module.inner)),
*self.module_graph,
module.availability_info,
))
}
#[turbo_tasks::function]
async fn chunks_data(self: Vc<Self>) -> Result<Vc<ChunksData>> {
let this = self.await?;
Ok(ChunkData::from_assets(
this.chunking_context.output_root().owned().await?,
self.chunks(),
))
}
}
#[turbo_tasks::value_impl]
impl EcmascriptChunkItem for AsyncLoaderChunkItem {
#[turbo_tasks::function]
async fn content(self: Vc<Self>) -> Result<Vc<EcmascriptChunkItemContent>> {
let this = self.await?;
let module = this.module.await?;
let id = if let Some(placeable) =
Vc::try_resolve_downcast::<Box<dyn EcmascriptChunkPlaceable>>(*module.inner).await?
{
Some(
placeable
.chunk_item_id(*ResolvedVc::upcast(this.chunking_context))
.await?,
)
} else {
None
};
let id = id.as_deref();
let chunks_data = self.chunks_data().await?;
let chunks_data = chunks_data.iter().try_join().await?;
let chunks_data: Vec<_> = chunks_data
.iter()
.map(|chunk_data| EcmascriptChunkData::new(chunk_data))
.collect();
let code = match (id, chunks_data.is_empty()) {
(Some(id), true) => {
formatdoc! {
r#"
{TURBOPACK_EXPORT_VALUE}((parentImport) => {{
return Promise.resolve().then(() => {{
return parentImport({id});
}});
}});
"#,
id = StringifyModuleId(id),
}
}
(Some(id), false) => {
formatdoc! {
r#"
{TURBOPACK_EXPORT_VALUE}((parentImport) => {{
return Promise.all({chunks:#}.map((chunk) => {TURBOPACK_LOAD}(chunk))).then(() => {{
return parentImport({id});
}});
}});
"#,
chunks = StringifyJs(&chunks_data),
id = StringifyModuleId(id),
}
}
(None, true) => {
formatdoc! {
r#"
{TURBOPACK_EXPORT_VALUE}((parentImport) => {{
return Promise.resolve();
}});
"#,
}
}
(None, false) => {
formatdoc! {
r#"
{TURBOPACK_EXPORT_VALUE}((parentImport) => {{
return Promise.all({chunks:#}.map((chunk) => {TURBOPACK_LOAD}(chunk))).then(() => {{}});
}});
"#,
chunks = StringifyJs(&chunks_data),
}
}
};
Ok(EcmascriptChunkItemContent {
inner_code: code.into(),
..Default::default()
}
.into())
}
}
#[turbo_tasks::value_impl]
impl ChunkItem for AsyncLoaderChunkItem {
#[turbo_tasks::function]
fn asset_ident(&self) -> Vc<AssetIdent> {
self.module.ident()
}
#[turbo_tasks::function]
async fn content_ident(self: Vc<Self>) -> Result<Vc<AssetIdent>> {
let ident = self.module().ident();
Ok(ident.with_modifier(self.chunks_data().hash().await?.to_string().into()))
}
#[turbo_tasks::function]
fn references(self: Vc<Self>) -> Vc<OutputAssets> {
self.chunks()
}
#[turbo_tasks::function]
fn chunking_context(&self) -> Vc<Box<dyn ChunkingContext>> {
*ResolvedVc::upcast(self.chunking_context)
}
#[turbo_tasks::function]
async fn ty(&self) -> Result<Vc<Box<dyn ChunkType>>> {
Ok(Vc::upcast(
Vc::<EcmascriptChunkType>::default().resolve().await?,
))
}
#[turbo_tasks::function]
fn module(&self) -> Vc<Box<dyn Module>> {
*ResolvedVc::upcast(self.module)
}
}
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