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use std::io::Write;
use anyhow::{Result, bail};
use indoc::writedoc;
use turbo_rcstr::{RcStr, rcstr};
use turbo_tasks::{ResolvedVc, ValueToString, Vc};
use turbo_tasks_fs::{File, FileSystem, FileSystemPath, rope::RopeBuilder};
use turbopack_core::{
asset::{Asset, AssetContent},
chunk::ChunkingContext,
code_builder::{Code, CodeBuilder},
ident::AssetIdent,
output::{OutputAsset, OutputAssets},
source_map::{GenerateSourceMap, OptionStringifiedSourceMap, SourceMapAsset},
};
use turbopack_ecmascript::utils::StringifyJs;
use turbopack_ecmascript_runtime::RuntimeType;
use crate::NodeJsChunkingContext;
/// An Ecmascript chunk that contains the Node.js runtime code.
#[turbo_tasks::value(shared)]
pub(crate) struct EcmascriptBuildNodeRuntimeChunk {
chunking_context: ResolvedVc<NodeJsChunkingContext>,
}
#[turbo_tasks::value_impl]
impl EcmascriptBuildNodeRuntimeChunk {
/// Creates a new [`Vc<EcmascriptBuildNodeRuntimeChunk>`].
#[turbo_tasks::function]
pub fn new(chunking_context: ResolvedVc<NodeJsChunkingContext>) -> Vc<Self> {
EcmascriptBuildNodeRuntimeChunk { chunking_context }.cell()
}
#[turbo_tasks::function]
async fn code(self: Vc<Self>) -> Result<Vc<Code>> {
let this = self.await?;
let output_root_to_root_path = this.chunking_context.output_root_to_root_path().await?;
let output_root = this.chunking_context.output_root().await?;
let generate_source_map = *this
.chunking_context
.reference_chunk_source_maps(Vc::upcast(self))
.await?;
let runtime_path = self.path().await?;
let runtime_public_path = if let Some(path) = output_root.get_path_to(&runtime_path) {
path
} else {
bail!(
"runtime path {} is not in output root {}",
runtime_path.to_string(),
output_root.to_string()
);
};
let mut code = CodeBuilder::default();
let asset_prefix = this.chunking_context.asset_prefix().await?;
let asset_prefix = asset_prefix.as_deref().unwrap_or("/");
writedoc!(
code,
r#"
const RUNTIME_PUBLIC_PATH = {};
const RELATIVE_ROOT_PATH = {};
const ASSET_PREFIX = {};
"#,
StringifyJs(runtime_public_path),
StringifyJs(output_root_to_root_path.as_str()),
StringifyJs(asset_prefix),
)?;
match *this.chunking_context.runtime_type().await? {
RuntimeType::Development => {
let runtime_code = turbopack_ecmascript_runtime::get_nodejs_runtime_code(
this.chunking_context.environment(),
generate_source_map,
);
code.push_code(&*runtime_code.await?);
}
RuntimeType::Production => {
let runtime_code = turbopack_ecmascript_runtime::get_nodejs_runtime_code(
this.chunking_context.environment(),
generate_source_map,
);
code.push_code(&*runtime_code.await?);
}
#[cfg(feature = "test")]
RuntimeType::Dummy => {
let runtime_code = turbopack_ecmascript_runtime::get_dummy_runtime_code();
code.push_code(&runtime_code);
}
}
Ok(Code::cell(code.build()))
}
#[turbo_tasks::function]
async fn ident_for_path(self: Vc<Self>) -> Result<Vc<AssetIdent>> {
Ok(AssetIdent::from_path(
turbopack_ecmascript_runtime::embed_fs()
.root()
.await?
.join("runtime.js")?,
))
}
#[turbo_tasks::function]
async fn source_map(self: Vc<Self>) -> Result<Vc<SourceMapAsset>> {
let this = self.await?;
Ok(SourceMapAsset::new(
Vc::upcast(*this.chunking_context),
self.ident_for_path(),
Vc::upcast(self),
))
}
}
#[turbo_tasks::value_impl]
impl ValueToString for EcmascriptBuildNodeRuntimeChunk {
#[turbo_tasks::function]
fn to_string(&self) -> Vc<RcStr> {
Vc::cell(rcstr!("Ecmascript Build Node Runtime Chunk"))
}
}
#[turbo_tasks::value_impl]
impl OutputAsset for EcmascriptBuildNodeRuntimeChunk {
#[turbo_tasks::function]
async fn path(self: Vc<Self>) -> Result<Vc<FileSystemPath>> {
let this = self.await?;
let ident = self.ident_for_path();
Ok(this
.chunking_context
.chunk_path(Some(Vc::upcast(self)), ident, None, rcstr!(".js")))
}
#[turbo_tasks::function]
async fn references(self: Vc<Self>) -> Result<Vc<OutputAssets>> {
let this = self.await?;
let mut references = vec![];
if *this
.chunking_context
.reference_chunk_source_maps(Vc::upcast(self))
.await?
{
references.push(ResolvedVc::upcast(self.source_map().to_resolved().await?))
}
Ok(Vc::cell(references))
}
}
#[turbo_tasks::value_impl]
impl Asset for EcmascriptBuildNodeRuntimeChunk {
#[turbo_tasks::function]
async fn content(self: Vc<Self>) -> Result<Vc<AssetContent>> {
let code = self.code().await?;
let rope = if code.has_source_map() {
let mut rope_builder = RopeBuilder::default();
rope_builder.concat(code.source_code());
let source_map_path = self.source_map().path().await?;
write!(
rope_builder,
"\n\n//# sourceMappingURL={}",
urlencoding::encode(source_map_path.file_name())
)?;
rope_builder.build()
} else {
code.source_code().clone()
};
Ok(AssetContent::file(File::from(rope).into()))
}
}
#[turbo_tasks::value_impl]
impl GenerateSourceMap for EcmascriptBuildNodeRuntimeChunk {
#[turbo_tasks::function]
fn generate_source_map(self: Vc<Self>) -> Vc<OptionStringifiedSourceMap> {
self.code().generate_source_map()
}
}
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