feat: expose ChunkGraph.getChunkGroupBlocks

crates/node_binding/napi-binding.d.ts

@@ -150,6 +150,7 @@ export declare class ChunkGraph {
   getModuleId(module: Module): string | number | null
   _getModuleHash(module: Module, runtime: string | string[] | undefined): string | null
   getBlockChunkGroup(jsBlock: AsyncDependenciesBlock): ChunkGroup | null
+  getChunkGroupBlocks(chunkGroup: ChunkGroup): AsyncDependenciesBlock[]
 }
 
 export declare class ChunkGroup {

crates/rspack_binding_api/src/chunk_graph.rs

@@ -5,9 +5,9 @@ use napi_derive::napi;
 use rspack_core::{Compilation, ModuleId, SourceType};
 
 use crate::{
-  async_dependency_block::AsyncDependenciesBlock,
+  async_dependency_block::{AsyncDependenciesBlock, AsyncDependenciesBlockWrapper},
   chunk::{Chunk, ChunkWrapper},
-  chunk_group::ChunkGroupWrapper,
+  chunk_group::{ChunkGroup, ChunkGroupWrapper},
   module::{ModuleObject, ModuleObjectRef},
   runtime::JsRuntimeSpec,
 };
@@ -210,4 +210,29 @@ impl ChunkGraph {
         .map(|chunk_group| ChunkGroupWrapper::new(chunk_group.ukey, compilation)),
     )
   }
+
+  #[napi(
+    ts_args_type = "chunkGroup: ChunkGroup",
+    ts_return_type = "AsyncDependenciesBlock[]"
+  )]
+  pub fn get_chunk_group_blocks(
+    &self,
+    chunk_group: &ChunkGroup,
+  ) -> napi::Result<Vec<AsyncDependenciesBlockWrapper>> {
+    let compilation = self.as_ref()?;
+    let module_graph = compilation.get_module_graph();
+
+    Ok(
+      compilation
+        .chunk_graph
+        .get_chunk_group_blocks(chunk_group.chunk_group_ukey)
+        .into_iter()
+        .filter_map(|block_id| {
+          module_graph
+            .block_by_id(&block_id)
+            .map(|block| AsyncDependenciesBlockWrapper::new(block, compilation))
+        })
+        .collect(),
+    )
+  }
 }

crates/rspack_binding_api/src/chunk_group.rs

@@ -14,7 +14,7 @@ use crate::{
 
 #[napi]
 pub struct ChunkGroup {
-  chunk_group_ukey: rspack_core::ChunkGroupUkey,
+  pub(crate) chunk_group_ukey: rspack_core::ChunkGroupUkey,
   compilation: NonNull<Compilation>,
 }
 

crates/rspack_core/src/chunk_graph/mod.rs

@@ -31,6 +31,23 @@ impl ChunkGraph {
     let cgm = self.expect_chunk_graph_module(*module_id);
     !cgm.entry_in_chunks.is_empty()
   }
+
+  pub fn get_chunk_group_blocks(
+    &self,
+    chunk_group_ukey: ChunkGroupUkey,
+  ) -> Vec<AsyncDependenciesBlockIdentifier> {
+    self
+      .block_to_chunk_group_ukey
+      .iter()
+      .filter_map(|(block_id, group_ukey)| {
+        if *group_ukey == chunk_group_ukey {
+          Some(*block_id)
+        } else {
+          None
+        }
+      })
+      .collect()
+  }
 }
 static INDENT: &str = "    ";
 

tests/rspack-test/configCases/chunk-graph/get-chunk-group-blocks/foo.js

@@ -0,0 +1 @@
+export default "foo";

tests/rspack-test/configCases/chunk-graph/get-chunk-group-blocks/index.js

@@ -0,0 +1 @@
+import(/* webpackChunkName: "foo-blocks" */ "./foo");

tests/rspack-test/configCases/chunk-graph/get-chunk-group-blocks/rspack.config.js

@@ -0,0 +1,44 @@
+class Plugin {
+	apply(compiler) {
+		compiler.hooks.compilation.tap("Test", compilation => {
+			compilation.hooks.processAssets.tap("Test", () => {
+				const entry = compilation.entries.get("main");
+				const entryDependency = entry.dependencies[0];
+				const entryModule = compilation.moduleGraph.getModule(entryDependency);
+				const block = entryModule.blocks[0];
+				const chunkGroup = compilation.chunkGraph.getBlockChunkGroup(block);
+
+				expect(chunkGroup.name).toBe("foo-blocks");
+
+				const blocks = compilation.chunkGraph.getChunkGroupBlocks(chunkGroup);
+				expect(blocks.length).toBe(1);
+				const blockFromGroup = blocks[0];
+				expect(blockFromGroup).toBe(block);
+
+				const blockDependencies = block.dependencies;
+				expect(blockDependencies.length).toBe(1);
+				expect(blockDependencies[0].request).toBe("./foo");
+
+				const groupBlockDependencies = blockFromGroup.dependencies;
+				expect(groupBlockDependencies.length).toBe(1);
+				expect(groupBlockDependencies[0]).toBe(blockDependencies[0]);
+			});
+		});
+	}
+}
+
+/** @type {import("@rspack/core").Configuration} */
+module.exports = {
+	target: "web",
+	node: false,
+	entry: {
+		main: "./index.js"
+	},
+	output: {
+		filename: "[name].js"
+	},
+	optimization: {
+		sideEffects: false
+	},
+	plugins: [new Plugin()]
+};