Swc macro

.vscode/launch.json

@@ -1,86 +1,88 @@
 {
-  "configurations": [
-    {
-      "type": "lldb",
-      "request": "launch",
-      "name": "Debug Rspack",
-      "program": "node",
-      "args": [
-        "packages/rspack-cli/bin/rspack.js",
-        "${input:rspackCommand}",
-        "-c",
-        "${input:rspackConfigPath}"
-      ],
-      "cwd": "${workspaceFolder}"
-    },
-    {
-      "type": "lldb",
-      "request": "launch",
-      "name": "Debug Jest Test",
-      "program": "node",
-      "args": [
-        "--experimental-vm-modules",
-        "../../node_modules/jest-cli/bin/jest",
-        "--runInBand",
-        "${input:pickTestFile}",
-        "-t",
-        "${input:pickPattern}"
-      ],
-      "cwd": "${workspaceFolder}/packages/rspack-test-tools",
-      "initCommands": ["settings set target.process.follow-fork-mode child"]
-    },
-    {
-      "name": "Attach JavaScript",
-      "processId": "${command:PickProcess}",
-      "request": "attach",
-      "skipFiles": [
-          "<node_internals>/**"
-      ],
-      "type": "node"
-     },
-    {
-      "type": "lldb",
-      "request": "attach",
-      "name": "Attach Rust",
-      "pid": "${command:pickMyProcess}"
-    },
-  ],
-  "inputs": [
-    {
-      "id": "pickTest",
-      "type": "command",
-      "command": "extension.pickTest",
-    },
-    {
-      "id": "rspackCommand",
-      "type": "pickString",
-      "options": [
-        "build",
-        "dev"
-      ],
-      "description": "choose build or dev mode",
-      "default": "dev"
-    },
-    {
-      "id": "rspackConfigPath",
-      "type": "promptString",
-      "description": "the rspack config path of your project",
-      "default": "examples/basic/rspack.config.cjs"
-    },
-    {
-      "id": "pickTestFile",
-      "type": "command",
-      "command": "shellCommand.execute",
-      "args": {
-        "command":"ls -alh packages/rspack-test-tools/tests/*.test.js | awk {'print $9'}",
-        "description": "pick test file"
-      }
-    },
-    {
-      "id": "pickPattern",
-      "type": "promptString",
-      "description": "pattern to filter test files",
-      "default": ""
-    }
-  ]
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug Rspack",
+            "program": "node",
+            "args": [
+                "packages/rspack-cli/bin/rspack.js",
+                "${input:rspackCommand}",
+                "-c",
+                "${input:rspackConfigPath}"
+            ],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug Jest Test",
+            "program": "node",
+            "args": [
+                "--experimental-vm-modules",
+                "../../node_modules/jest-cli/bin/jest",
+                "--runInBand",
+                "${input:pickTestFile}",
+                "-t",
+                "${input:pickPattern}"
+            ],
+            "cwd": "${workspaceFolder}/packages/rspack-test-tools",
+            "initCommands": [
+                "settings set target.process.follow-fork-mode child"
+            ]
+        },
+        {
+            "name": "Attach JavaScript",
+            "processId": "${command:PickProcess}",
+            "request": "attach",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "type": "node"
+        },
+        {
+            "type": "lldb",
+            "request": "attach",
+            "name": "Attach Rust",
+            "pid": "${command:pickMyProcess}"
+        }
+    ],
+    "inputs": [
+        {
+            "id": "pickTest",
+            "type": "command",
+            "command": "extension.pickTest"
+        },
+        {
+            "id": "rspackCommand",
+            "type": "pickString",
+            "options": [
+                "build",
+                "dev"
+            ],
+            "description": "choose build or dev mode",
+            "default": "dev"
+        },
+        {
+            "id": "rspackConfigPath",
+            "type": "promptString",
+            "description": "the rspack config path of your project",
+            "default": "examples/basic/rspack.config.cjs"
+        },
+        {
+            "id": "pickTestFile",
+            "type": "command",
+            "command": "shellCommand.execute",
+            "args": {
+                "command": "ls -alh packages/rspack-test-tools/tests/*.test.js | awk {'print $9'}",
+                "description": "pick test file"
+            }
+        },
+        {
+            "id": "pickPattern",
+            "type": "promptString",
+            "description": "pattern to filter test files",
+            "default": ""
+        }
+    ]
 }

biome.jsonc

@@ -61,7 +61,11 @@
 			"!**/packages/rspack-test-tools/template/*",
 			// --- ignore runtime code in browser
 			"!**/packages/rspack/hot",
-			"!**/packages/rspack/src/runtime/moduleFederationDefaultRuntime.js"
+			"!**/packages/rspack/src/runtime/moduleFederationDefaultRuntime.js",
+			// --- ignore examples/basic test directory
+			"!**/examples/basic/**/*",
+			// --- ignore generated WASM files
+			"!**/examples/swc_macro_wasm_pkg/**/*"
 		],
 		"ignoreUnknown": true
 	},

crates/node_binding/scripts/move-binding.js

@@ -1,5 +1,5 @@
-const path = require("path");
-const fs = require("fs");
+const path = require("node:path");
+const fs = require("node:fs");
 
 console.log(__dirname);
 const abslutePathBindingList = fs

crates/rspack_binding_api/src/module.rs

@@ -850,6 +850,10 @@ impl From<JsBuildMeta> for BuildMeta {
       default_object,
       side_effect_free,
       exports_final_name,
+      consume_shared_key: None,
+      shared_key: None,
+      is_shared_descendant: None,
+      effective_shared_key: None,
     }
   }
 }

crates/rspack_core/src/dependency/dependency_type.rs

@@ -32,6 +32,8 @@ pub enum DependencyType {
   CjsFullRequire,
   // cjs exports
   CjsExports,
+  // consume shared exports (tree-shaking variant)
+  ConsumeSharedExports,
   // module.exports = require(), should bailout in old tree shaking
   CjsExportRequire,
   // cjs self reference
@@ -138,6 +140,7 @@ impl DependencyType {
       DependencyType::CjsRequire => "cjs require",
       DependencyType::CjsFullRequire => "cjs full require",
       DependencyType::CjsExports => "cjs exports",
+      DependencyType::ConsumeSharedExports => "consume shared exports",
       DependencyType::CjsExportRequire => "cjs export require",
       DependencyType::CjsSelfReference => "cjs self exports reference",
       DependencyType::AmdDefine => "amd define",

crates/rspack_core/src/dependency/runtime_template.rs

@@ -13,6 +13,20 @@ use crate::{
   to_comment, to_normal_comment,
 };
 
+/// Check if a module is part of a shared bundle using BuildMeta only
+/// This relies on the Module Federation plugin to populate BuildMeta.is_shared_descendant
+fn is_consume_shared_descendant(module_graph: &ModuleGraph, module_id: &ModuleIdentifier) -> bool {
+  if let Some(module) = module_graph.module_by_identifier(module_id) {
+    let build_meta = module.build_meta();
+
+    // Use BuildMeta value (populated by Module Federation plugin)
+    // If not populated, assume false (no PURE annotations)
+    build_meta.is_shared_descendant.unwrap_or(false)
+  } else {
+    false
+  }
+}
+
 pub fn runtime_condition_expression(
   chunk_graph: &ChunkGraph,
   runtime_condition: Option<&RuntimeCondition>,
@@ -400,8 +414,21 @@ pub fn import_statement(
 
   let opt_declaration = if update { "" } else { "var " };
 
+  // Apply PURE annotations only to descendants of ConsumeShared or ProvideShared modules
+  // This ensures the SWC macro transformer can remove unused __webpack_require__ calls in shared chunks
+  let is_pure = if let Some(module_identifier) = compilation
+    .get_module_graph()
+    .module_identifier_by_dependency_id(id)
+  {
+    is_consume_shared_descendant(&compilation.get_module_graph(), module_identifier)
+  } else {
+    false
+  };
+
+  let pure_annotation = if is_pure { "/* #__PURE__ */ " } else { "" };
+
   let import_content = format!(
-    "/* ESM import */{opt_declaration}{import_var} = {}({module_id_expr});\n",
+    "/* ESM import */{opt_declaration}{import_var} = {pure_annotation}{}({module_id_expr});\n",
     RuntimeGlobals::REQUIRE
   );
 
@@ -903,3 +930,15 @@ mod test_items_to_regexp {
     );
   }
 }
+
+#[cfg(test)]
+mod test_is_consume_shared_descendant {
+  use super::*;
+
+  #[test]
+  fn test_is_consume_shared_descendant_function_signature() {
+    // Test that the function exists and has the correct signature
+    // Verify function signature compiles correctly
+    let _: fn(&ModuleGraph, &ModuleIdentifier) -> bool = is_consume_shared_descendant;
+  }
+}

crates/rspack_core/src/module.rs

@@ -206,6 +206,20 @@ pub struct BuildMeta {
   pub side_effect_free: Option<bool>,
   #[serde(skip_serializing_if = "Option::is_none")]
   pub exports_final_name: Option<Vec<(String, String)>>,
+
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub consume_shared_key: Option<String>,
+
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub shared_key: Option<String>,
+
+  /// Cached result of shared descendant check to avoid expensive BFS traversals
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub is_shared_descendant: Option<bool>,
+
+  /// Unified shared key for both ESM and CommonJS (effective key after resolution)
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub effective_shared_key: Option<String>,
 }
 
 // webpack build info
@@ -417,6 +431,12 @@ pub trait Module:
   fn need_id(&self) -> bool {
     true
   }
+
+  /// Get the share_key for ConsumeShared modules.
+  /// Returns None for non-ConsumeShared modules.
+  fn get_consume_shared_key(&self) -> Option<String> {
+    None
+  }
 }
 
 fn get_exports_type_impl(

crates/rspack_plugin_javascript/src/dependency/commonjs/common_js_export_require_dependency.rs

@@ -442,6 +442,10 @@ impl DependencyTemplate for CommonJsExportRequireDependencyTemplate {
       .module_by_identifier(&module.identifier())
       .expect("should have mgm");
 
+    // Check if parent module is ConsumeShared and get share_key from options
+    // ConsumeShared tree-shaking macro support
+    let consume_shared_info: Option<String> = module.get_consume_shared_key();
+
     let exports_argument = module.get_exports_argument();
     let module_argument = module.get_module_argument();
 
@@ -527,7 +531,21 @@ impl DependencyTemplate for CommonJsExportRequireDependencyTemplate {
     if dep.base.is_expression() {
       let expr = match used {
         Some(UsedName::Normal(used)) => {
-          format!("{base}{} = {require_expr}", property_access(used, 0))
+          let assignment = format!("{base}{} = {require_expr}", property_access(&used, 0));
+
+          // ConsumeShared tree-shaking macro support
+          if let Some(shared_key) = &consume_shared_info {
+            let export_name = used
+              .iter()
+              .map(|a| a.as_str())
+              .collect::<Vec<_>>()
+              .join(".");
+            format!(
+              "/* @common:if [condition=\"treeShake.{shared_key}.{export_name}\"] */ {assignment} /* @common:endif */"
+            )
+          } else {
+            assignment
+          }
         }
         Some(UsedName::Inlined(_)) => {
           // Export a inlinable const from cjs is not possible for now but we compat it here