next_core/next_dynamic/
dynamic_module.rs

1use std::collections::BTreeMap;
2
3use anyhow::{Result, bail};
4use indoc::formatdoc;
5use turbo_rcstr::{RcStr, rcstr};
6use turbo_tasks::{ResolvedVc, Vc};
7use turbopack_core::{
8    asset::{Asset, AssetContent},
9    chunk::{ChunkItem, ChunkType, ChunkableModule, ChunkingContext, ModuleChunkItemIdExt},
10    ident::AssetIdent,
11    module::Module,
12    module_graph::ModuleGraph,
13    reference::{ModuleReferences, SingleChunkableModuleReference},
14    resolve::ExportUsage,
15};
16use turbopack_ecmascript::{
17    chunk::{
18        EcmascriptChunkItem, EcmascriptChunkItemContent, EcmascriptChunkPlaceable,
19        EcmascriptChunkType, EcmascriptExports,
20    },
21    references::esm::{EsmExport, EsmExports},
22    runtime_functions::{TURBOPACK_EXPORT_NAMESPACE, TURBOPACK_IMPORT},
23    utils::StringifyJs,
24};
25
26/// A [`NextDynamicEntryModule`] is a marker asset used to indicate which
27/// dynamic assets should appear in the dynamic manifest.
28#[turbo_tasks::value(shared)]
29pub struct NextDynamicEntryModule {
30    module: ResolvedVc<Box<dyn EcmascriptChunkPlaceable>>,
31}
32
33#[turbo_tasks::value_impl]
34impl NextDynamicEntryModule {
35    #[turbo_tasks::function]
36    pub fn new(module: ResolvedVc<Box<dyn EcmascriptChunkPlaceable>>) -> Vc<Self> {
37        NextDynamicEntryModule { module }.cell()
38    }
39}
40
41fn dynamic_ref_description() -> RcStr {
42    rcstr!("next/dynamic reference")
43}
44
45#[turbo_tasks::value_impl]
46impl Module for NextDynamicEntryModule {
47    #[turbo_tasks::function]
48    fn ident(&self) -> Vc<AssetIdent> {
49        self.module
50            .ident()
51            .with_modifier(rcstr!("next/dynamic entry"))
52    }
53
54    #[turbo_tasks::function]
55    async fn references(&self) -> Result<Vc<ModuleReferences>> {
56        Ok(Vc::cell(vec![ResolvedVc::upcast(
57            SingleChunkableModuleReference::new(
58                Vc::upcast(*self.module),
59                dynamic_ref_description(),
60                ExportUsage::all(),
61            )
62            .to_resolved()
63            .await?,
64        )]))
65    }
66}
67
68#[turbo_tasks::value_impl]
69impl Asset for NextDynamicEntryModule {
70    #[turbo_tasks::function]
71    fn content(&self) -> Result<Vc<AssetContent>> {
72        bail!("Next.js Server Component module has no content")
73    }
74}
75
76#[turbo_tasks::value_impl]
77impl ChunkableModule for NextDynamicEntryModule {
78    #[turbo_tasks::function]
79    fn as_chunk_item(
80        self: ResolvedVc<Self>,
81        module_graph: ResolvedVc<ModuleGraph>,
82        chunking_context: ResolvedVc<Box<dyn ChunkingContext>>,
83    ) -> Vc<Box<dyn turbopack_core::chunk::ChunkItem>> {
84        Vc::upcast(
85            NextDynamicEntryChunkItem {
86                chunking_context,
87                module_graph,
88                inner: self,
89            }
90            .cell(),
91        )
92    }
93}
94
95#[turbo_tasks::value_impl]
96impl EcmascriptChunkPlaceable for NextDynamicEntryModule {
97    #[turbo_tasks::function]
98    async fn get_exports(&self) -> Result<Vc<EcmascriptExports>> {
99        let module_reference = ResolvedVc::upcast(
100            SingleChunkableModuleReference::new(
101                Vc::upcast(*self.module),
102                dynamic_ref_description(),
103                ExportUsage::all(),
104            )
105            .to_resolved()
106            .await?,
107        );
108
109        let mut exports = BTreeMap::new();
110        let default = rcstr!("default");
111        exports.insert(
112            default.clone(),
113            EsmExport::ImportedBinding(module_reference, default, false),
114        );
115
116        Ok(EcmascriptExports::EsmExports(
117            EsmExports {
118                exports,
119                star_exports: vec![module_reference],
120            }
121            .resolved_cell(),
122        )
123        .cell())
124    }
125}
126
127#[turbo_tasks::value]
128struct NextDynamicEntryChunkItem {
129    chunking_context: ResolvedVc<Box<dyn ChunkingContext>>,
130    module_graph: ResolvedVc<ModuleGraph>,
131    inner: ResolvedVc<NextDynamicEntryModule>,
132}
133
134#[turbo_tasks::value_impl]
135impl EcmascriptChunkItem for NextDynamicEntryChunkItem {
136    #[turbo_tasks::function]
137    async fn content(&self) -> Result<Vc<EcmascriptChunkItemContent>> {
138        let inner = self.inner.await?;
139
140        let module_id = inner
141            .module
142            .chunk_item_id(Vc::upcast(*self.chunking_context))
143            .await?;
144        Ok(EcmascriptChunkItemContent {
145            inner_code: formatdoc!(
146                r#"
147                    {TURBOPACK_EXPORT_NAMESPACE}({TURBOPACK_IMPORT}({}));
148                "#,
149                StringifyJs(&module_id),
150            )
151            .into(),
152            ..Default::default()
153        }
154        .cell())
155    }
156}
157
158#[turbo_tasks::value_impl]
159impl ChunkItem for NextDynamicEntryChunkItem {
160    #[turbo_tasks::function]
161    fn asset_ident(&self) -> Vc<AssetIdent> {
162        self.inner.ident()
163    }
164
165    #[turbo_tasks::function]
166    fn chunking_context(&self) -> Vc<Box<dyn ChunkingContext>> {
167        *self.chunking_context
168    }
169
170    #[turbo_tasks::function]
171    fn ty(&self) -> Vc<Box<dyn ChunkType>> {
172        Vc::upcast(Vc::<EcmascriptChunkType>::default())
173    }
174
175    #[turbo_tasks::function]
176    fn module(&self) -> Vc<Box<dyn Module>> {
177        Vc::upcast(*self.inner)
178    }
179}
next_core/next_dynamic/dynamic_module.rs

next_core/next_dynamic/
dynamic_module.rs
