From cf902cfd02c9515d8a37c5893c94f368a997965e Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 13:57:36 -0700
Subject: [PATCH 01/12] build(cargo): define new pkg

---
 Cargo.lock                 |  4 ++++
 Cargo.toml                 |  1 +
 crates/swc_core/Cargo.toml | 12 ++++++++++++
 crates/swc_core/src/lib.rs |  1 +
 4 files changed, 18 insertions(+)
 create mode 100644 crates/swc_core/Cargo.toml
 create mode 100644 crates/swc_core/src/lib.rs

diff --git a/Cargo.lock b/Cargo.lock
index 9f45b3666a77..de051b051308 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3146,6 +3146,10 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "swc_core"
+version = "0.1.0"
+
 [[package]]
 name = "swc_css"
 version = "0.117.0"
diff --git a/Cargo.toml b/Cargo.toml
index 8a1a712d9e60..a88abf420778 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,6 @@
 [workspace]
 members = [
+  "crates/swc_core",
   "crates/dbg-swc",
   "crates/jsdoc",
   "crates/binding_core_node",
diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
new file mode 100644
index 000000000000..2ddf086797cb
--- /dev/null
+++ b/crates/swc_core/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+authors = ["강동윤 <kdy1997.dev@gmail.com>", "OJ Kwon <kwon.ohjoong@gmail.com>"]
+description = "TBD"
+name = "swc_core"
+license = "Apache-2.0"
+edition = "2021"
+repository = "https://github.com/swc-project/swc.git"
+version = "0.1.0"
+
+[features]
+
+[dependencies]
diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
new file mode 100644
index 000000000000..8b137891791f
--- /dev/null
+++ b/crates/swc_core/src/lib.rs
@@ -0,0 +1 @@
+

From cb4fa0736901a66b7f097904b17afe8d5f18d54b Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 15:27:03 -0700
Subject: [PATCH 02/12] feat(swc/core): initial plugin features

---
 Cargo.lock                                    | 10 +++++
 crates/swc_core/Cargo.toml                    | 41 +++++++++++++++++++
 crates/swc_core/src/lib.rs                    | 25 +++++++++++
 crates/swc_core/src/plugin.rs                 | 25 +++++++++++
 crates/swc_plugin/src/lib.rs                  |  4 +-
 .../fixture/swc_internal_plugin/Cargo.lock    | 35 +++++++++++-----
 .../fixture/swc_internal_plugin/Cargo.toml    |  2 +-
 .../fixture/swc_internal_plugin/src/lib.rs    | 13 +++---
 8 files changed, 136 insertions(+), 19 deletions(-)
 create mode 100644 crates/swc_core/src/plugin.rs

diff --git a/Cargo.lock b/Cargo.lock
index de051b051308..987ab49e06f3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3149,6 +3149,16 @@ dependencies = [
 [[package]]
 name = "swc_core"
 version = "0.1.0"
+dependencies = [
+ "swc_atoms",
+ "swc_common",
+ "swc_ecma_ast",
+ "swc_ecma_quote",
+ "swc_ecma_visit",
+ "swc_plugin",
+ "swc_plugin_macro",
+ "swc_plugin_proxy",
+]
 
 [[package]]
 name = "swc_css"
diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index 2ddf086797cb..a42989ff16b5 100644
--- a/crates/swc_core/Cargo.toml
+++ b/crates/swc_core/Cargo.toml
@@ -8,5 +8,46 @@ repository = "https://github.com/swc-project/swc.git"
 version = "0.1.0"
 
 [features]
+### Public features
+### Users should opt in necessary features explicitly
+
+## General
+# Enable `quote!` macro support.
+quote = ["swc_ecma_quote"]
+
+## Plugins
+# Top level features should be enabled to write plugins.
+plugin = [
+  # Dependent features
+  "__common",
+  "__ast",
+  "__visit",
+  # Enable optional packages
+  "swc_common/plugin-mode",
+  "swc_plugin_proxy/plugin-mode",
+  "swc_plugin_macro",
+  "swc_plugin"
+]
+
+### Internal features
+### Feature sets public features rely on.
+### This is not supposed to be used directly, and does not gaurantee
+### stability across each versions.
+
+# Common
+__common = ["swc_common"]
+
+# TODO: Should this be public?
+# AST
+__ast = ["swc_ecma_ast/rkyv-impl", "swc_atoms"]
+__visit = ["swc_ecma_visit"]
 
 [dependencies]
+swc_atoms = { optional = true, version = "0.3.1", path = "../swc_atoms" }
+swc_common = { optional = true, version = "0.26.0", path = "../swc_common" }
+swc_ecma_ast = { optional = true, version = "0.89.1", path = "../swc_ecma_ast" }
+swc_ecma_quote = { optional = true, version = "0.30.0", path = "../swc_ecma_quote" }
+swc_ecma_visit = { optional = true, version = "0.75.0", path = "../swc_ecma_visit" }
+swc_plugin = { optional = true, version = "0.88.2", path = "../swc_plugin" }
+swc_plugin_macro = { optional = true, version = "0.8.1", path = "../swc_plugin_macro" }
+swc_plugin_proxy = { optional = true, version = "0.17.0", path = "../swc_plugin_proxy" }
diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
index 8b137891791f..43e9435df4b4 100644
--- a/crates/swc_core/src/lib.rs
+++ b/crates/swc_core/src/lib.rs
@@ -1 +1,26 @@
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
+// Plugins
+#[cfg(feature = "plugin")]
+pub mod plugin;
+
+// ast exposed via swc_ecma_ast
+// TODO: Can dependency tree simplified
+// by swc_ecma_ast reexports swc_atoms?
+#[cfg(any(feature = "__ast"))]
+pub mod ast {
+    pub use swc_atoms::*;
+    pub use swc_ecma_ast::*;
+}
+
+// visit* interfaces
+#[cfg(any(feature = "__visit"))]
+pub mod visit {
+    pub use swc_ecma_visit::*;
+}
+
+// swc_common features
+#[cfg(any(feature = "__common"))]
+pub mod common {
+    pub use swc_common::*;
+}
diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
new file mode 100644
index 000000000000..298c6811885b
--- /dev/null
+++ b/crates/swc_core/src/plugin.rs
@@ -0,0 +1,25 @@
+// #[plugin_transform] macro
+#[cfg(feature = "plugin")]
+pub use swc_plugin_macro::plugin_transform;
+
+/// exported __alloc / __free fn for the guest (plugin)
+/// allows to allocate memory from the host side.
+/// This should not be directly referenced.
+#[cfg(all(feature = "plugin", target_arch = "wasm32"))]
+pub mod memory {
+    pub use swc_plugin::allocation::*;
+}
+
+/// Global HANDLER implementation for the plugin
+/// for error reporting.
+#[cfg(feature = "plugin")]
+pub mod errors {
+    pub use swc_plugin::handler::HANDLER;
+}
+
+/// Plugin's environment metadata context.
+#[cfg(feature = "plugin")]
+pub mod metadata {
+    pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
+    pub use swc_plugin_proxy::TransformPluginProgramMetadata;
+}
diff --git a/crates/swc_plugin/src/lib.rs b/crates/swc_plugin/src/lib.rs
index be4994cc0806..237f6f8fccfb 100644
--- a/crates/swc_plugin/src/lib.rs
+++ b/crates/swc_plugin/src/lib.rs
@@ -51,7 +51,7 @@ pub mod syntax_pos {
     pub use swc_common::{Mark, Span, DUMMY_SP};
 }
 
-mod handler;
+pub mod handler;
 pub mod errors {
     pub use swc_common::errors::{Diagnostic, Handler, Level};
 
@@ -65,7 +65,7 @@ pub mod environment {
 // in ide (i.e rust-analyzer) or non-wasm target `cargo check`
 pub use swc_plugin_macro::plugin_transform;
 #[cfg(target_arch = "wasm32")]
-mod allocation;
+pub mod allocation;
 #[cfg(target_arch = "wasm32")]
 pub mod memory {
     pub use crate::allocation::*;
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
index b27ad3e7e587..7693fef65bce 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
@@ -704,7 +704,7 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "swc_atoms"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "bytecheck",
  "once_cell",
@@ -717,7 +717,7 @@ dependencies = [
 
 [[package]]
 name = "swc_common"
-version = "0.25.0"
+version = "0.26.0"
 dependencies = [
  "ahash",
  "anyhow",
@@ -743,9 +743,22 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "swc_core"
+version = "0.1.0"
+dependencies = [
+ "swc_atoms",
+ "swc_common",
+ "swc_ecma_ast",
+ "swc_ecma_visit",
+ "swc_plugin",
+ "swc_plugin_macro",
+ "swc_plugin_proxy",
+]
+
 [[package]]
 name = "swc_ecma_ast"
-version = "0.88.1"
+version = "0.89.1"
 dependencies = [
  "bitflags",
  "bytecheck",
@@ -762,7 +775,7 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_parser"
-version = "0.115.1"
+version = "0.116.0"
 dependencies = [
  "either",
  "enum_kind",
@@ -779,7 +792,7 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_utils"
-version = "0.97.0"
+version = "0.98.1"
 dependencies = [
  "indexmap",
  "once_cell",
@@ -793,7 +806,7 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_visit"
-version = "0.74.1"
+version = "0.75.0"
 dependencies = [
  "num-bigint",
  "swc_atoms",
@@ -805,7 +818,7 @@ dependencies = [
 
 [[package]]
 name = "swc_ecmascript"
-version = "0.185.0"
+version = "0.186.0"
 dependencies = [
  "swc_ecma_ast",
  "swc_ecma_parser",
@@ -828,7 +841,7 @@ name = "swc_internal_plugin"
 version = "0.1.0"
 dependencies = [
  "serde",
- "swc_plugin",
+ "swc_core",
 ]
 
 [[package]]
@@ -843,7 +856,7 @@ dependencies = [
 
 [[package]]
 name = "swc_plugin"
-version = "0.87.0"
+version = "0.88.2"
 dependencies = [
  "swc_atoms",
  "swc_common",
@@ -854,7 +867,7 @@ dependencies = [
 
 [[package]]
 name = "swc_plugin_macro"
-version = "0.8.0"
+version = "0.8.1"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -863,7 +876,7 @@ dependencies = [
 
 [[package]]
 name = "swc_plugin_proxy"
-version = "0.16.0"
+version = "0.17.0"
 dependencies = [
  "better_scoped_tls",
  "bytecheck",
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml
index b559f27c56e4..69dbdf7fe827 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml
@@ -11,4 +11,4 @@ crate-type = ["cdylib"]
 
 [dependencies]
 serde = "1"
-swc_plugin = { path = "../../../../swc_plugin" }
+swc_core = { path = "../../../../swc_core", features = ["plugin"] }
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/src/lib.rs b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/src/lib.rs
index 65f92e16d6ea..c7efe8bddbc0 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/src/lib.rs
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/src/lib.rs
@@ -1,9 +1,12 @@
-use swc_plugin::{
+use swc_core::{
     ast::*,
-    errors::HANDLER,
-    metadata::{TransformPluginMetadataContextKind, TransformPluginProgramMetadata},
-    plugin_transform,
-    syntax_pos::DUMMY_SP,
+    common::DUMMY_SP,
+    plugin::{
+        errors::HANDLER,
+        metadata::{TransformPluginMetadataContextKind, TransformPluginProgramMetadata},
+        plugin_transform,
+    },
+    visit::*,
 };
 
 struct ConsoleOutputReplacer;

From a9da0c0694a4845d00a13cc312480afea79fe17d Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 16:37:33 -0700
Subject: [PATCH 03/12] refactor(swc/plugin_macro): update references to core

---
 crates/swc_core/src/plugin.rs      |  8 ++++++-
 crates/swc_plugin_macro/src/lib.rs | 34 ++++++++++++++++--------------
 2 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index 298c6811885b..6805ffaf1447 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -14,7 +14,7 @@ pub mod memory {
 /// for error reporting.
 #[cfg(feature = "plugin")]
 pub mod errors {
-    pub use swc_plugin::handler::HANDLER;
+    pub use swc_plugin::handler::{PluginDiagnosticsEmitter, HANDLER};
 }
 
 /// Plugin's environment metadata context.
@@ -23,3 +23,9 @@ pub mod metadata {
     pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
     pub use swc_plugin_proxy::TransformPluginProgramMetadata;
 }
+
+/// Proxy to the host's data not attached to the AST, like sourcemap / comments.
+#[cfg(feature = "plugin")]
+pub mod proxies {
+    pub use swc_plugin_proxy::*;
+}
diff --git a/crates/swc_plugin_macro/src/lib.rs b/crates/swc_plugin_macro/src/lib.rs
index eb76557f1c5c..c0f164e1a25e 100644
--- a/crates/swc_plugin_macro/src/lib.rs
+++ b/crates/swc_plugin_macro/src/lib.rs
@@ -45,9 +45,9 @@ fn handle_func(func: ItemFn) -> TokenStream {
         }
 
         /// Internal function plugin_macro uses to create ptr to PluginError.
-        fn construct_error_ptr(plugin_error: swc_plugin::PluginError) -> i32 {
-            let plugin_error = swc_plugin::VersionedSerializable::new(plugin_error);
-            let ret = swc_plugin::PluginSerializedBytes::try_serialize(&plugin_error).expect("Should able to serialize PluginError");
+        fn construct_error_ptr(plugin_error: swc_core::common::plugin::serialized::PluginError) -> i32 {
+            let plugin_error = swc_core::common::plugin::serialized::VersionedSerializable::new(plugin_error);
+            let ret = swc_core::common::plugin::serialized::PluginSerializedBytes::try_serialize(&plugin_error).expect("Should able to serialize PluginError");
             let (ptr, len) = ret.as_ptr();
 
             send_transform_result_to_host(
@@ -59,7 +59,7 @@ fn handle_func(func: ItemFn) -> TokenStream {
 
         #[no_mangle]
         pub fn #transform_schema_version_ident() -> u32 {
-            swc_plugin::PLUGIN_TRANSFORM_AST_SCHEMA_VERSION
+            swc_core::common::plugin::serialized::PLUGIN_TRANSFORM_AST_SCHEMA_VERSION
         }
 
         // Macro to allow compose plugin's transform function without manual pointer operation.
@@ -72,44 +72,46 @@ fn handle_func(func: ItemFn) -> TokenStream {
             unresolved_mark: u32, should_enable_comments_proxy: i32) -> i32 {
             // Reconstruct `Program` & config string from serialized program
             // Host (SWC) should allocate memory, copy bytes and pass ptr to plugin.
-            let program = unsafe { swc_plugin::deserialize_from_ptr(ast_ptr, ast_ptr_len).map(|v| v.into_inner()) };
+            let program = unsafe { swc_core::common::plugin::serialized::deserialize_from_ptr(ast_ptr, ast_ptr_len).map(|v| v.into_inner()) };
             if program.is_err() {
-                let err = swc_plugin::PluginError::Deserialize("Failed to deserialize program received from host".to_string());
+                let err = swc_core::common::plugin::serialized::PluginError::Deserialize("Failed to deserialize program received from host".to_string());
                 return construct_error_ptr(err);
             }
             let program: Program = program.expect("Should be a program");
 
             // Create a handler wired with plugin's diagnostic emitter, set it for global context.
-            let handler = swc_plugin::errors::Handler::with_emitter(
+            let handler = swc_core::common::errors::Handler::with_emitter(
                 true,
                 false,
-                Box::new(swc_plugin::environment::PluginDiagnosticsEmitter)
+                Box::new(swc_core::plugin::errors::PluginDiagnosticsEmitter)
             );
-            let handler_set_result = swc_plugin::errors::HANDLER.inner.set(handler);
+            let handler_set_result = swc_core::plugin::errors::HANDLER.inner.set(handler);
 
             if handler_set_result.is_err() {
-                let err = swc_plugin::PluginError::Serialize(
+                let err = swc_core::common::plugin::serialized::PluginError::Serialize(
                         "Failed to set handler for plugin".to_string()
                     );
                 return construct_error_ptr(err);
             }
 
             // Construct metadata to the `Program` for the transform plugin.
-            let plugin_comments_proxy = if should_enable_comments_proxy == 1 { Some(swc_plugin::comments::PluginCommentsProxy) } else { None };
-            let mut metadata = swc_plugin::metadata::TransformPluginProgramMetadata {
+            let plugin_comments_proxy = if should_enable_comments_proxy == 1 { Some(swc_core::plugin::proxies::PluginCommentsProxy) } else { None };
+            let mut metadata = swc_core::plugin::metadata::TransformPluginProgramMetadata {
                 comments: plugin_comments_proxy,
-                source_map: swc_plugin::source_map::PluginSourceMapProxy,
-                unresolved_mark: swc_plugin::syntax_pos::Mark::from_u32(unresolved_mark),
+                source_map: swc_core::plugin::proxies::PluginSourceMapProxy,
+                unresolved_mark: swc_core::common::Mark::from_u32(unresolved_mark),
             };
 
             // Take original plugin fn ident, then call it with interop'ed args
             let transformed_program = #ident(program, metadata);
 
             // Serialize transformed result, return back to the host.
-            let serialized_result = swc_plugin::PluginSerializedBytes::try_serialize(&swc_plugin::VersionedSerializable::new(transformed_program));
+            let serialized_result = swc_core::common::plugin::serialized::PluginSerializedBytes::try_serialize(
+                &swc_core::common::plugin::serialized::VersionedSerializable::new(transformed_program)
+            );
 
             if serialized_result.is_err() {
-                let err = swc_plugin::PluginError::Serialize("Failed to serialize transformed program".to_string());
+                let err = swc_core::common::plugin::serialized::PluginError::Serialize("Failed to serialize transformed program".to_string());
                 return construct_error_ptr(err);
             }
 

From 6b0a9a4ef638eac3fe286fd39d4a4718979a13bf Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 16:50:49 -0700
Subject: [PATCH 04/12] refactor(swc/plugin): strip out reexports with deps

---
 Cargo.lock                                    |   5 -
 crates/swc_core/src/lib.rs                    |   6 +
 crates/swc_plugin/Cargo.toml                  |  16 +-
 crates/swc_plugin/src/lib.rs                  |  70 +-------
 .../fixture/swc_internal_plugin/Cargo.lock    | 150 ------------------
 5 files changed, 9 insertions(+), 238 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 987ab49e06f3..c7ed2e4f1a43 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4134,12 +4134,7 @@ dependencies = [
 name = "swc_plugin"
 version = "0.88.2"
 dependencies = [
- "swc_atoms",
  "swc_common",
- "swc_ecma_quote",
- "swc_ecmascript",
- "swc_plugin_macro",
- "swc_plugin_proxy",
 ]
 
 [[package]]
diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
index 43e9435df4b4..4921569dbebe 100644
--- a/crates/swc_core/src/lib.rs
+++ b/crates/swc_core/src/lib.rs
@@ -1,5 +1,11 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
+// Quote
+#[cfg(feature = "quote")]
+pub mod quote {
+    pub use swc_ecma_quote::*;
+}
+
 // Plugins
 #[cfg(feature = "plugin")]
 pub mod plugin;
diff --git a/crates/swc_plugin/Cargo.toml b/crates/swc_plugin/Cargo.toml
index 468afc7cf20e..85618b9b50bd 100644
--- a/crates/swc_plugin/Cargo.toml
+++ b/crates/swc_plugin/Cargo.toml
@@ -17,22 +17,10 @@ bench = false
 
 [features]
 default = ["plugin_transform_schema_v1"]
-quote = ["swc_ecma_quote"]
-plugin_transform_schema_v1 = [
-  "swc_common/plugin_transform_schema_v1"
-]
-plugin_transform_schema_vtest = [
-  "swc_common/plugin_transform_schema_vtest",
-]
+plugin_transform_schema_v1 = ["swc_common/plugin_transform_schema_v1"]
+plugin_transform_schema_vtest = ["swc_common/plugin_transform_schema_vtest"]
 
 [dependencies]
-swc_atoms = { version = "0.3.1", path = "../swc_atoms" }
 swc_common = { version = "0.26.0", path = "../swc_common", features = [
   "plugin-mode",
 ] }
-swc_ecma_quote = { version = "0.30.0", path = "../swc_ecma_quote", optional = true }
-swc_ecmascript = { version = "0.186.0", path = "../swc_ecmascript", features = ["utils", "visit", "rkyv-impl"] }
-swc_plugin_proxy = { version = "0.17.0", path = "../swc_plugin_proxy", features = [
-  "plugin-mode",
-] }
-swc_plugin_macro = { version = "0.8.1", path = "../swc_plugin_macro" }
diff --git a/crates/swc_plugin/src/lib.rs b/crates/swc_plugin/src/lib.rs
index 237f6f8fccfb..4c7874ebf609 100644
--- a/crates/swc_plugin/src/lib.rs
+++ b/crates/swc_plugin/src/lib.rs
@@ -1,73 +1,5 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
-
-// Reexports
-pub use swc_common::{
-    chain,
-    plugin::serialized::{
-        deserialize_from_ptr, PluginError, PluginSerializedBytes, VersionedSerializable,
-        PLUGIN_TRANSFORM_AST_SCHEMA_VERSION,
-    },
-};
-
-pub mod collections {
-    pub use swc_common::collections::AHashMap;
-}
-
-pub mod comments {
-    pub use swc_common::comments::{Comment, CommentKind, Comments};
-    pub use swc_plugin_proxy::PluginCommentsProxy;
-}
-
-pub mod source_map {
-    pub use swc_common::{
-        source_map::{
-            BytePos, CharPos, FileLinesResult, FileName, Loc, MultiByteChar, NonNarrowChar, Pos,
-            SourceFile,
-        },
-        SourceMapper,
-    };
-    pub use swc_plugin_proxy::PluginSourceMapProxy;
-}
-
-pub mod metadata {
-    pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
-    pub use swc_plugin_proxy::TransformPluginProgramMetadata;
-}
-
-pub mod utils {
-    pub use swc_common::util::take;
-    #[cfg(feature = "swc_ecma_quote")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "quote")))]
-    pub use swc_ecma_quote::*;
-    pub use swc_ecmascript::utils::*;
-}
-
-pub mod ast {
-    pub use swc_atoms::*;
-    pub use swc_ecmascript::{ast::*, visit::*};
-}
-
-pub mod syntax_pos {
-    pub use swc_common::{Mark, Span, DUMMY_SP};
-}
-
-pub mod handler;
-pub mod errors {
-    pub use swc_common::errors::{Diagnostic, Handler, Level};
-
-    pub use crate::handler::HANDLER;
-}
-
-pub mod environment {
-    pub use crate::handler::*;
-}
-// We don't set target cfg as it'll block macro expansions
-// in ide (i.e rust-analyzer) or non-wasm target `cargo check`
-pub use swc_plugin_macro::plugin_transform;
 #[cfg(target_arch = "wasm32")]
 pub mod allocation;
-#[cfg(target_arch = "wasm32")]
-pub mod memory {
-    pub use crate::allocation::*;
-}
+pub mod handler;
 mod pseudo_scoped_key;
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
index 7693fef65bce..87568ff7b0d5 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
@@ -146,16 +146,6 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f107b87b6afc2a64fd13cac55fe06d6c8859f12d4b14cbcdd2c67d0976781be"
 
-[[package]]
-name = "enum_kind"
-version = "0.2.1"
-dependencies = [
- "pmutil",
- "proc-macro2",
- "swc_macros_common",
- "syn",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -219,16 +209,6 @@ dependencies = [
  "unicode-normalization",
 ]
 
-[[package]]
-name = "indexmap"
-version = "1.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
-dependencies = [
- "autocfg",
- "hashbrown",
-]
-
 [[package]]
 name = "is-macro"
 version = "0.2.1"
@@ -248,79 +228,6 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
-[[package]]
-name = "lexical"
-version = "6.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7aefb36fd43fef7003334742cbf77b243fcd36418a1d1bdd480d613a67968f6"
-dependencies = [
- "lexical-core",
-]
-
-[[package]]
-name = "lexical-core"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cde5de06e8d4c2faabc400238f9ae1c74d5412d03a7bd067645ccbc47070e46"
-dependencies = [
- "lexical-parse-float",
- "lexical-parse-integer",
- "lexical-util",
- "lexical-write-float",
- "lexical-write-integer",
-]
-
-[[package]]
-name = "lexical-parse-float"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "683b3a5ebd0130b8fb52ba0bdc718cc56815b6a097e28ae5a6997d0ad17dc05f"
-dependencies = [
- "lexical-parse-integer",
- "lexical-util",
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-parse-integer"
-version = "0.8.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d0994485ed0c312f6d965766754ea177d07f9c00c9b82a5ee62ed5b47945ee9"
-dependencies = [
- "lexical-util",
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-util"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5255b9ff16ff898710eb9eb63cb39248ea8a5bb036bea8085b1a767ff6c4e3fc"
-dependencies = [
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-write-float"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "accabaa1c4581f05a3923d1b4cfd124c329352288b7b9da09e766b0668116862"
-dependencies = [
- "lexical-util",
- "lexical-write-integer",
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-write-integer"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1b6f3d1f4422866b68192d62f77bc5c700bee84f3069f2469d7bc8c77852446"
-dependencies = [
- "lexical-util",
- "static_assertions",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.126"
@@ -653,12 +560,6 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
 [[package]]
 name = "string_cache"
 version = "0.8.4"
@@ -773,37 +674,6 @@ dependencies = [
  "unicode-id",
 ]
 
-[[package]]
-name = "swc_ecma_parser"
-version = "0.116.0"
-dependencies = [
- "either",
- "enum_kind",
- "lexical",
- "num-bigint",
- "serde",
- "smallvec",
- "swc_atoms",
- "swc_common",
- "swc_ecma_ast",
- "tracing",
- "typed-arena",
-]
-
-[[package]]
-name = "swc_ecma_utils"
-version = "0.98.1"
-dependencies = [
- "indexmap",
- "once_cell",
- "swc_atoms",
- "swc_common",
- "swc_ecma_ast",
- "swc_ecma_visit",
- "tracing",
- "unicode-id",
-]
-
 [[package]]
 name = "swc_ecma_visit"
 version = "0.75.0"
@@ -816,16 +686,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "swc_ecmascript"
-version = "0.186.0"
-dependencies = [
- "swc_ecma_ast",
- "swc_ecma_parser",
- "swc_ecma_utils",
- "swc_ecma_visit",
-]
-
 [[package]]
 name = "swc_eq_ignore_macros"
 version = "0.1.0"
@@ -858,11 +718,7 @@ dependencies = [
 name = "swc_plugin"
 version = "0.88.2"
 dependencies = [
- "swc_atoms",
  "swc_common",
- "swc_ecmascript",
- "swc_plugin_macro",
- "swc_plugin_proxy",
 ]
 
 [[package]]
@@ -963,12 +819,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "typed-arena"
-version = "2.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0685c84d5d54d1c26f7d3eb96cd41550adb97baed141a761cf335d3d33bcd0ae"
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.8"

From 545b80e782f5ef831cc700e5443c06a83cff49ca Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 17:10:27 -0700
Subject: [PATCH 05/12] refactor(swc/plugin_macro): encapsulate
 plugindiagemitter

---
 crates/swc_core/src/plugin.rs      |  2 +-
 crates/swc_plugin/README.md        | 25 +++-------------------
 crates/swc_plugin/src/handler.rs   | 33 +-----------------------------
 crates/swc_plugin_macro/src/lib.rs | 26 ++++++++++++++++++++++-
 4 files changed, 30 insertions(+), 56 deletions(-)

diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index 6805ffaf1447..c63b3dc5185c 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -14,7 +14,7 @@ pub mod memory {
 /// for error reporting.
 #[cfg(feature = "plugin")]
 pub mod errors {
-    pub use swc_plugin::handler::{PluginDiagnosticsEmitter, HANDLER};
+    pub use swc_plugin::handler::HANDLER;
 }
 
 /// Plugin's environment metadata context.
diff --git a/crates/swc_plugin/README.md b/crates/swc_plugin/README.md
index bbdc3c1041f7..cd23ec9f04aa 100644
--- a/crates/swc_plugin/README.md
+++ b/crates/swc_plugin/README.md
@@ -1,24 +1,5 @@
-# SWC Plugin
+## swc_plugin (PUBLIC INTERFACE DEPRECATED)
 
-This crate provides necessary types and macros for creating a custom plugin for SWC (https://swc.rs/), which are WebAssembly modules that may be used to modify behavior of SWC. Currently only `transform` (https://swc.rs/docs/usage/core#transform) is supported.
+Provides internal implementation detail to communicate between `@swc/core` to the plugin.
 
-**Disclaimer: currently SWC plugin support is experimental, there may be possible breaking changes or unexpected behaviors. Please provide issues, feedbacks to https://github.com/swc-project/swc/discussions .**
-
-## Writing a plugin
-
-All plugin require adding crate-type = ['cdylib'] to the Cargo.toml. For a quick setup, SWC provides a simple commandline to create project for the plugin.
-
-```
-// if you haven't, add build targets for webassembly
-rustup target add wasm32-wasi wasm32-unknown-unknown
-
-cargo install swc_cli
-
-swc plugin new ${plugin_name} --target-type wasm32-wasi
-```
-
-When create a new project cli require to specify target type between `wasm32-wasi` or `wasm32-unknown-unknown`. `wasm32-unknown-unknown` will generate slighly smaller binary, but it doesn't support system interfaces as well as macros like `printn!()`.
-
-Generated project will contain a fn with macro `#[plugin_transform]` which internally does necessary interop for communication between host to the plugin.
-
-There are few references like SWC's [jest transform](https://github.com/swc-project/swc/blob/90d080c16b41b73f34151c1f5ecbcbf0b5d8e236/crates/swc_ecma_ext_transforms/src/jest.rs) for writing actual `VisitMut`.
+NOTE: This was previously entrypoint sdk to authoring a plugin, but `swc_core` becomes a meta entrypoint to any features SWC provides (https://github.com/swc-project/swc/discussions/5244).
\ No newline at end of file
diff --git a/crates/swc_plugin/src/handler.rs b/crates/swc_plugin/src/handler.rs
index 52c5c32c19aa..714c38b9589a 100644
--- a/crates/swc_plugin/src/handler.rs
+++ b/crates/swc_plugin/src/handler.rs
@@ -1,38 +1,7 @@
-use swc_common::{
-    plugin::serialized::{PluginSerializedBytes, VersionedSerializable},
-    sync::OnceCell,
-};
+use swc_common::sync::OnceCell;
 
 use crate::pseudo_scoped_key::PseudoScopedKey;
 
-#[cfg(target_arch = "wasm32")] // Allow testing
-extern "C" {
-    fn __emit_diagnostics(bytes_ptr: i32, bytes_ptr_len: i32);
-    fn __free(bytes_ptr: i32, size: i32) -> i32;
-}
-
-/// An emitter for the Diagnostic in plugin's context by borrowing host's
-/// environment context.
-///
-/// It is not expected to call this directly inside of plugin transform.
-/// Instead, it is encouraged to use global HANDLER.
-pub struct PluginDiagnosticsEmitter;
-
-impl swc_common::errors::Emitter for PluginDiagnosticsEmitter {
-    #[cfg_attr(not(target_arch = "wasm32"), allow(unused))]
-    fn emit(&mut self, db: &swc_common::errors::DiagnosticBuilder<'_>) {
-        let diagnostic = VersionedSerializable::new((*db.diagnostic).clone());
-        let diag = PluginSerializedBytes::try_serialize(&diagnostic)
-            .expect("Should able to serialize Diagnostic");
-        let (ptr, len) = diag.as_ptr();
-
-        #[cfg(target_arch = "wasm32")] // Allow testing
-        unsafe {
-            __emit_diagnostics(ptr as i32, len as i32);
-        }
-    }
-}
-
 /// global context HANDLER in plugin's transform function.
 pub static HANDLER: PseudoScopedKey = PseudoScopedKey {
     inner: OnceCell::new(),
diff --git a/crates/swc_plugin_macro/src/lib.rs b/crates/swc_plugin_macro/src/lib.rs
index c0f164e1a25e..e746bb9e19a1 100644
--- a/crates/swc_plugin_macro/src/lib.rs
+++ b/crates/swc_plugin_macro/src/lib.rs
@@ -32,6 +32,30 @@ fn handle_func(func: ItemFn) -> TokenStream {
         #[cfg(target_arch = "wasm32")] // Allow testing
         extern "C" {
             fn __set_transform_result(bytes_ptr: i32, bytes_ptr_len: i32);
+            fn __emit_diagnostics(bytes_ptr: i32, bytes_ptr_len: i32);
+            fn __free(bytes_ptr: i32, size: i32) -> i32;
+        }
+
+        /// An emitter for the Diagnostic in plugin's context by borrowing host's
+        /// environment context.
+        ///
+        /// It is not expected to call this directly inside of plugin transform.
+        /// Instead, it is encouraged to use global HANDLER.
+        pub struct PluginDiagnosticsEmitter;
+
+        impl swc_core::common::errors::Emitter for PluginDiagnosticsEmitter {
+            #[cfg_attr(not(target_arch = "wasm32"), allow(unused))]
+            fn emit(&mut self, db: &swc_core::common::errors::DiagnosticBuilder<'_>) {
+                let diagnostic = swc_core::common::plugin::serialized::VersionedSerializable::new((*db.diagnostic).clone());
+                let diag = swc_core::common::plugin::serialized::PluginSerializedBytes::try_serialize(&diagnostic)
+                    .expect("Should able to serialize Diagnostic");
+                let (ptr, len) = diag.as_ptr();
+
+                #[cfg(target_arch = "wasm32")] // Allow testing
+                unsafe {
+                    __emit_diagnostics(ptr as i32, len as i32);
+                }
+            }
         }
 
 
@@ -83,7 +107,7 @@ fn handle_func(func: ItemFn) -> TokenStream {
             let handler = swc_core::common::errors::Handler::with_emitter(
                 true,
                 false,
-                Box::new(swc_core::plugin::errors::PluginDiagnosticsEmitter)
+                Box::new(PluginDiagnosticsEmitter)
             );
             let handler_set_result = swc_core::plugin::errors::HANDLER.inner.set(handler);
 

From 6f6c10feeb8c96fd8cf2ed11125f80e0c98370db Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 20:04:45 -0700
Subject: [PATCH 06/12] refactor(swc/core): clarify plugin feature

---
 crates/swc_core/Cargo.toml                             |  4 ++--
 crates/swc_core/src/lib.rs                             |  2 +-
 crates/swc_core/src/plugin.rs                          | 10 +++++-----
 .../tests/fixture/swc_internal_plugin/Cargo.toml       |  2 +-
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index a42989ff16b5..a866d04e50e1 100644
--- a/crates/swc_core/Cargo.toml
+++ b/crates/swc_core/Cargo.toml
@@ -16,8 +16,8 @@ version = "0.1.0"
 quote = ["swc_ecma_quote"]
 
 ## Plugins
-# Top level features should be enabled to write plugins.
-plugin = [
+# Top level features should be enabled to write plugins for the custom transform.
+plugin_transform = [
   # Dependent features
   "__common",
   "__ast",
diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
index 4921569dbebe..26429e1e90e7 100644
--- a/crates/swc_core/src/lib.rs
+++ b/crates/swc_core/src/lib.rs
@@ -7,7 +7,7 @@ pub mod quote {
 }
 
 // Plugins
-#[cfg(feature = "plugin")]
+#[cfg(feature = "plugin_transform")]
 pub mod plugin;
 
 // ast exposed via swc_ecma_ast
diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index c63b3dc5185c..3d9f560a0a94 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -1,31 +1,31 @@
 // #[plugin_transform] macro
-#[cfg(feature = "plugin")]
+#[cfg(feature = "plugin_transform")]
 pub use swc_plugin_macro::plugin_transform;
 
 /// exported __alloc / __free fn for the guest (plugin)
 /// allows to allocate memory from the host side.
 /// This should not be directly referenced.
-#[cfg(all(feature = "plugin", target_arch = "wasm32"))]
+#[cfg(all(feature = "plugin_transform", target_arch = "wasm32"))]
 pub mod memory {
     pub use swc_plugin::allocation::*;
 }
 
 /// Global HANDLER implementation for the plugin
 /// for error reporting.
-#[cfg(feature = "plugin")]
+#[cfg(feature = "plugin_transform")]
 pub mod errors {
     pub use swc_plugin::handler::HANDLER;
 }
 
 /// Plugin's environment metadata context.
-#[cfg(feature = "plugin")]
+#[cfg(feature = "plugin_transform")]
 pub mod metadata {
     pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
     pub use swc_plugin_proxy::TransformPluginProgramMetadata;
 }
 
 /// Proxy to the host's data not attached to the AST, like sourcemap / comments.
-#[cfg(feature = "plugin")]
+#[cfg(feature = "plugin_transform")]
 pub mod proxies {
     pub use swc_plugin_proxy::*;
 }
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml
index 69dbdf7fe827..d1fdc0b158ce 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.toml
@@ -11,4 +11,4 @@ crate-type = ["cdylib"]
 
 [dependencies]
 serde = "1"
-swc_core = { path = "../../../../swc_core", features = ["plugin"] }
+swc_core = { path = "../../../../swc_core", features = ["plugin_transform"] }

From 3e10ae579b34964cc7209a2f31701a4a9432d696 Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 20:24:27 -0700
Subject: [PATCH 07/12] refactor(swc/plugin): flatten dep tree to exclude
 swc_common

---
 Cargo.lock                                          |  3 ++-
 crates/swc_core/Cargo.toml                          | 13 ++++++++++++-
 crates/swc_core/src/plugin.rs                       |  7 ++++++-
 crates/swc_plugin/Cargo.toml                        |  9 +--------
 crates/swc_plugin/src/handler.rs                    |  8 --------
 crates/swc_plugin/src/lib.rs                        |  3 +--
 crates/swc_plugin/src/pseudo_scoped_key.rs          | 12 +++++++-----
 .../tests/fixture/swc_internal_plugin/Cargo.lock    |  3 ++-
 8 files changed, 31 insertions(+), 27 deletions(-)
 delete mode 100644 crates/swc_plugin/src/handler.rs

diff --git a/Cargo.lock b/Cargo.lock
index c7ed2e4f1a43..8d4f1c6268e8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3150,6 +3150,7 @@ dependencies = [
 name = "swc_core"
 version = "0.1.0"
 dependencies = [
+ "once_cell",
  "swc_atoms",
  "swc_common",
  "swc_ecma_ast",
@@ -4134,7 +4135,7 @@ dependencies = [
 name = "swc_plugin"
 version = "0.88.2"
 dependencies = [
- "swc_common",
+ "once_cell",
 ]
 
 [[package]]
diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index a866d04e50e1..74a818985b0a 100644
--- a/crates/swc_core/Cargo.toml
+++ b/crates/swc_core/Cargo.toml
@@ -22,11 +22,13 @@ plugin_transform = [
   "__common",
   "__ast",
   "__visit",
+  "__plugin_transform_schema_v1",
   # Enable optional packages
   "swc_common/plugin-mode",
   "swc_plugin_proxy/plugin-mode",
   "swc_plugin_macro",
-  "swc_plugin"
+  "swc_plugin",
+  "once_cell"
 ]
 
 ### Internal features
@@ -34,6 +36,14 @@ plugin_transform = [
 ### This is not supposed to be used directly, and does not gaurantee
 ### stability across each versions.
 
+# Specify version of AST schema will be used.
+# This'll be automatically selected via transform_plugin features,
+# SWC upstream decides which version to be used for specific version of
+# swc_core.
+__plugin_transform_schema_v1 = [
+  "swc_common/plugin_transform_schema_v1"
+]
+
 # Common
 __common = ["swc_common"]
 
@@ -43,6 +53,7 @@ __ast = ["swc_ecma_ast/rkyv-impl", "swc_atoms"]
 __visit = ["swc_ecma_visit"]
 
 [dependencies]
+once_cell = { optional = true, version = "1.13.0"}
 swc_atoms = { optional = true, version = "0.3.1", path = "../swc_atoms" }
 swc_common = { optional = true, version = "0.26.0", path = "../swc_common" }
 swc_ecma_ast = { optional = true, version = "0.89.1", path = "../swc_ecma_ast" }
diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index 3d9f560a0a94..55aaff0ebb93 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -14,7 +14,12 @@ pub mod memory {
 /// for error reporting.
 #[cfg(feature = "plugin_transform")]
 pub mod errors {
-    pub use swc_plugin::handler::HANDLER;
+    /// global context HANDLER in plugin's transform function.
+    pub static HANDLER: swc_plugin::pseudo_scoped_key::PseudoScopedKey<
+        swc_common::errors::Handler,
+    > = swc_plugin::pseudo_scoped_key::PseudoScopedKey {
+        inner: once_cell::sync::OnceCell::new(),
+    };
 }
 
 /// Plugin's environment metadata context.
diff --git a/crates/swc_plugin/Cargo.toml b/crates/swc_plugin/Cargo.toml
index 85618b9b50bd..898278c4f24a 100644
--- a/crates/swc_plugin/Cargo.toml
+++ b/crates/swc_plugin/Cargo.toml
@@ -15,12 +15,5 @@ rustdoc-args = ["--cfg", "docsrs"]
 [lib]
 bench = false
 
-[features]
-default = ["plugin_transform_schema_v1"]
-plugin_transform_schema_v1 = ["swc_common/plugin_transform_schema_v1"]
-plugin_transform_schema_vtest = ["swc_common/plugin_transform_schema_vtest"]
-
 [dependencies]
-swc_common = { version = "0.26.0", path = "../swc_common", features = [
-  "plugin-mode",
-] }
+once_cell = "1.13.0"
\ No newline at end of file
diff --git a/crates/swc_plugin/src/handler.rs b/crates/swc_plugin/src/handler.rs
deleted file mode 100644
index 714c38b9589a..000000000000
--- a/crates/swc_plugin/src/handler.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use swc_common::sync::OnceCell;
-
-use crate::pseudo_scoped_key::PseudoScopedKey;
-
-/// global context HANDLER in plugin's transform function.
-pub static HANDLER: PseudoScopedKey = PseudoScopedKey {
-    inner: OnceCell::new(),
-};
diff --git a/crates/swc_plugin/src/lib.rs b/crates/swc_plugin/src/lib.rs
index 4c7874ebf609..45cdf6a29576 100644
--- a/crates/swc_plugin/src/lib.rs
+++ b/crates/swc_plugin/src/lib.rs
@@ -1,5 +1,4 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #[cfg(target_arch = "wasm32")]
 pub mod allocation;
-pub mod handler;
-mod pseudo_scoped_key;
+pub mod pseudo_scoped_key;
diff --git a/crates/swc_plugin/src/pseudo_scoped_key.rs b/crates/swc_plugin/src/pseudo_scoped_key.rs
index a777abf76ca6..844b769f659c 100644
--- a/crates/swc_plugin/src/pseudo_scoped_key.rs
+++ b/crates/swc_plugin/src/pseudo_scoped_key.rs
@@ -1,19 +1,21 @@
+use once_cell::sync::OnceCell;
+
 /// Simple substitution for scoped_thread_local with limited interface parity.
 /// The only available fn in this struct is `with`, which is being used for the
 /// consumers when they need to access global scope handler (HANDLER.with()).
 /// Any other interfaces to support thread local is not available.
-pub struct PseudoScopedKey {
+pub struct PseudoScopedKey<T> {
     // As we can't use scoped_thread_local for the global HANDLER, it is challenging
     // to set its inner handler for each plugin scope's diagnostic emitter.
     // Via lazy init OnceCell we keep static HANDLER as immutable, also allows to set
     // plugin specific values when proc_macro expands plugin's transform helper.
-    pub inner: swc_common::sync::OnceCell<swc_common::errors::Handler>,
+    pub inner: OnceCell<T>,
 }
 
-impl PseudoScopedKey {
+impl<T> PseudoScopedKey<T> {
     pub fn with<F, R>(&self, f: F) -> R
     where
-        F: FnOnce(&swc_common::errors::Handler) -> R,
+        F: FnOnce(&T) -> R,
     {
         f(self.inner.get().expect("Should set handler before call"))
     }
@@ -25,4 +27,4 @@ impl PseudoScopedKey {
 // NOTE: This only works cause we know each plugin transform doesn't need any
 // thread safety. However, if wasm gets thread support and if we're going to
 // support it this should be revisited.
-unsafe impl std::marker::Sync for PseudoScopedKey {}
+unsafe impl<T> std::marker::Sync for PseudoScopedKey<T> {}
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
index 87568ff7b0d5..743c3b17e7d1 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
@@ -648,6 +648,7 @@ dependencies = [
 name = "swc_core"
 version = "0.1.0"
 dependencies = [
+ "once_cell",
  "swc_atoms",
  "swc_common",
  "swc_ecma_ast",
@@ -718,7 +719,7 @@ dependencies = [
 name = "swc_plugin"
 version = "0.88.2"
 dependencies = [
- "swc_common",
+ "once_cell",
 ]
 
 [[package]]

From 2935542aace20131ec4349f041969961f828dd88 Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 22:32:34 -0700
Subject: [PATCH 08/12] test(swc): update references

---
 crates/swc_core/Cargo.toml                    | 37 ++++++++++++++++---
 crates/swc_core/src/lib.rs                    |  2 +
 crates/swc_core/src/plugin.rs                 | 10 ++++-
 .../plugin_transform_schema_vtest/Cargo.toml  |  2 +-
 .../plugin_transform_schema_vtest/src/lib.rs  |  7 +++-
 5 files changed, 49 insertions(+), 9 deletions(-)

diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index 74a818985b0a..bf2dbb6d3bce 100644
--- a/crates/swc_core/Cargo.toml
+++ b/crates/swc_core/Cargo.toml
@@ -19,6 +19,7 @@ quote = ["swc_ecma_quote"]
 # Top level features should be enabled to write plugins for the custom transform.
 plugin_transform = [
   # Dependent features
+  "__plugin_transform",
   "__common",
   "__ast",
   "__visit",
@@ -31,8 +32,7 @@ plugin_transform = [
   "once_cell"
 ]
 
-### Internal features
-### Feature sets public features rely on.
+### Internal features that public features are relying on.
 ### This is not supposed to be used directly, and does not gaurantee
 ### stability across each versions.
 
@@ -44,11 +44,38 @@ __plugin_transform_schema_v1 = [
   "swc_common/plugin_transform_schema_v1"
 ]
 
-# Common
+# Do not use: testing purpose only
+__plugin_transform_schema_vtest = [
+  "swc_common/plugin_transform_schema_vtest"
+]
+
+## Plugins
+
+# Internal flags for any transform plugin feature
+__plugin_transform = []
+
+# Do not use: testing purpose only
+# Force enable different version of AST schema
+__plugin_transform_schema_test = [
+  # Dependent features
+  "__plugin_transform",
+  "__common",
+  "__ast",
+  "__visit",
+  "__plugin_transform_schema_vtest",
+  # Enable optional packages
+  "swc_common/plugin-mode",
+  "swc_plugin_proxy/plugin-mode",
+  "swc_plugin_macro",
+  "swc_plugin",
+  "once_cell"
+]
+
+## Common
 __common = ["swc_common"]
 
-# TODO: Should this be public?
-# AST
+## TODO: Should this be public?
+## AST
 __ast = ["swc_ecma_ast/rkyv-impl", "swc_atoms"]
 __visit = ["swc_ecma_visit"]
 
diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
index 26429e1e90e7..0e363de8ee66 100644
--- a/crates/swc_core/src/lib.rs
+++ b/crates/swc_core/src/lib.rs
@@ -8,6 +8,8 @@ pub mod quote {
 
 // Plugins
 #[cfg(feature = "plugin_transform")]
+#[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg(feature = "__plugin_transform")]
 pub mod plugin;
 
 // ast exposed via swc_ecma_ast
diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index 55aaff0ebb93..b2f54f4e8d2b 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -1,11 +1,13 @@
 // #[plugin_transform] macro
 #[cfg(feature = "plugin_transform")]
+#[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg(feature = "__plugin_transform")]
 pub use swc_plugin_macro::plugin_transform;
 
 /// exported __alloc / __free fn for the guest (plugin)
 /// allows to allocate memory from the host side.
 /// This should not be directly referenced.
-#[cfg(all(feature = "plugin_transform", target_arch = "wasm32"))]
+#[cfg(all(feature = "__plugin_transform", target_arch = "wasm32"))]
 pub mod memory {
     pub use swc_plugin::allocation::*;
 }
@@ -13,6 +15,8 @@ pub mod memory {
 /// Global HANDLER implementation for the plugin
 /// for error reporting.
 #[cfg(feature = "plugin_transform")]
+#[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg(feature = "__plugin_transform")]
 pub mod errors {
     /// global context HANDLER in plugin's transform function.
     pub static HANDLER: swc_plugin::pseudo_scoped_key::PseudoScopedKey<
@@ -24,6 +28,8 @@ pub mod errors {
 
 /// Plugin's environment metadata context.
 #[cfg(feature = "plugin_transform")]
+#[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg(feature = "__plugin_transform")]
 pub mod metadata {
     pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
     pub use swc_plugin_proxy::TransformPluginProgramMetadata;
@@ -31,6 +37,8 @@ pub mod metadata {
 
 /// Proxy to the host's data not attached to the AST, like sourcemap / comments.
 #[cfg(feature = "plugin_transform")]
+#[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg(feature = "__plugin_transform")]
 pub mod proxies {
     pub use swc_plugin_proxy::*;
 }
diff --git a/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.toml b/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.toml
index d5a370f68381..86030b010bbe 100644
--- a/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.toml
+++ b/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.toml
@@ -11,4 +11,4 @@ crate-type = ["cdylib"]
 
 [dependencies]
 serde = "1.0.140"
-swc_plugin = { path = "../../../../crates/swc_plugin", default-features = false, features = ["plugin_transform_schema_vtest"] }
+swc_core = { path = "../../../../crates/swc_core", features = ["__plugin_transform_schema_test"] }
diff --git a/node-swc/e2e/fixtures/plugin_transform_schema_vtest/src/lib.rs b/node-swc/e2e/fixtures/plugin_transform_schema_vtest/src/lib.rs
index 793f3d570ce8..c434c8ddbd08 100644
--- a/node-swc/e2e/fixtures/plugin_transform_schema_vtest/src/lib.rs
+++ b/node-swc/e2e/fixtures/plugin_transform_schema_vtest/src/lib.rs
@@ -1,5 +1,8 @@
-use swc_plugin::{
-    ast::*, metadata::TransformPluginProgramMetadata, plugin_transform, syntax_pos::DUMMY_SP,
+use swc_core::{
+    ast::*,
+    common::DUMMY_SP,
+    plugin::{metadata::TransformPluginProgramMetadata, plugin_transform},
+    visit::*,
 };
 
 struct ConsoleOutputReplacer;

From 9fa8c5be4ce20be090994616269138f8acdcbed2 Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 22:30:03 -0700
Subject: [PATCH 09/12] refactor(swc/core): align feature cfg

---
 crates/swc_core/src/lib.rs    | 10 ++++------
 crates/swc_core/src/plugin.rs |  8 --------
 2 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
index 0e363de8ee66..b9b65546734a 100644
--- a/crates/swc_core/src/lib.rs
+++ b/crates/swc_core/src/lib.rs
@@ -1,34 +1,32 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
 // Quote
-#[cfg(feature = "quote")]
+#[cfg(any(docsrs, feature = "quote"))]
 pub mod quote {
     pub use swc_ecma_quote::*;
 }
 
 // Plugins
-#[cfg(feature = "plugin_transform")]
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
-#[cfg(feature = "__plugin_transform")]
 pub mod plugin;
 
 // ast exposed via swc_ecma_ast
 // TODO: Can dependency tree simplified
 // by swc_ecma_ast reexports swc_atoms?
-#[cfg(any(feature = "__ast"))]
+#[cfg(any(docsrs, feature = "__ast"))]
 pub mod ast {
     pub use swc_atoms::*;
     pub use swc_ecma_ast::*;
 }
 
 // visit* interfaces
-#[cfg(any(feature = "__visit"))]
+#[cfg(any(docsrs, feature = "__visit"))]
 pub mod visit {
     pub use swc_ecma_visit::*;
 }
 
 // swc_common features
-#[cfg(any(feature = "__common"))]
+#[cfg(any(docsrs, feature = "__common"))]
 pub mod common {
     pub use swc_common::*;
 }
diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index b2f54f4e8d2b..15e604c5a3e2 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -1,7 +1,5 @@
 // #[plugin_transform] macro
-#[cfg(feature = "plugin_transform")]
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
-#[cfg(feature = "__plugin_transform")]
 pub use swc_plugin_macro::plugin_transform;
 
 /// exported __alloc / __free fn for the guest (plugin)
@@ -14,9 +12,7 @@ pub mod memory {
 
 /// Global HANDLER implementation for the plugin
 /// for error reporting.
-#[cfg(feature = "plugin_transform")]
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
-#[cfg(feature = "__plugin_transform")]
 pub mod errors {
     /// global context HANDLER in plugin's transform function.
     pub static HANDLER: swc_plugin::pseudo_scoped_key::PseudoScopedKey<
@@ -27,18 +23,14 @@ pub mod errors {
 }
 
 /// Plugin's environment metadata context.
-#[cfg(feature = "plugin_transform")]
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
-#[cfg(feature = "__plugin_transform")]
 pub mod metadata {
     pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
     pub use swc_plugin_proxy::TransformPluginProgramMetadata;
 }
 
 /// Proxy to the host's data not attached to the AST, like sourcemap / comments.
-#[cfg(feature = "plugin_transform")]
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
-#[cfg(feature = "__plugin_transform")]
 pub mod proxies {
     pub use swc_plugin_proxy::*;
 }

From 2cfc7d832683539f80977cbb0a2f3d5125779087 Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 22:37:55 -0700
Subject: [PATCH 10/12] build(swc/core): realign version

---
 crates/swc_core/Cargo.toml | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/crates/swc_core/Cargo.toml b/crates/swc_core/Cargo.toml
index bf2dbb6d3bce..60ac2ca2fca8 100644
--- a/crates/swc_core/Cargo.toml
+++ b/crates/swc_core/Cargo.toml
@@ -5,7 +5,7 @@ name = "swc_core"
 license = "Apache-2.0"
 edition = "2021"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.1.0"
+version = "0.0.1"
 
 [features]
 ### Public features
@@ -29,7 +29,7 @@ plugin_transform = [
   "swc_plugin_proxy/plugin-mode",
   "swc_plugin_macro",
   "swc_plugin",
-  "once_cell"
+  "once_cell",
 ]
 
 ### Internal features that public features are relying on.
@@ -40,14 +40,10 @@ plugin_transform = [
 # This'll be automatically selected via transform_plugin features,
 # SWC upstream decides which version to be used for specific version of
 # swc_core.
-__plugin_transform_schema_v1 = [
-  "swc_common/plugin_transform_schema_v1"
-]
+__plugin_transform_schema_v1 = ["swc_common/plugin_transform_schema_v1"]
 
 # Do not use: testing purpose only
-__plugin_transform_schema_vtest = [
-  "swc_common/plugin_transform_schema_vtest"
-]
+__plugin_transform_schema_vtest = ["swc_common/plugin_transform_schema_vtest"]
 
 ## Plugins
 
@@ -68,7 +64,7 @@ __plugin_transform_schema_test = [
   "swc_plugin_proxy/plugin-mode",
   "swc_plugin_macro",
   "swc_plugin",
-  "once_cell"
+  "once_cell",
 ]
 
 ## Common
@@ -80,7 +76,7 @@ __ast = ["swc_ecma_ast/rkyv-impl", "swc_atoms"]
 __visit = ["swc_ecma_visit"]
 
 [dependencies]
-once_cell = { optional = true, version = "1.13.0"}
+once_cell = { optional = true, version = "1.13.0" }
 swc_atoms = { optional = true, version = "0.3.1", path = "../swc_atoms" }
 swc_common = { optional = true, version = "0.26.0", path = "../swc_common" }
 swc_ecma_ast = { optional = true, version = "0.89.1", path = "../swc_ecma_ast" }

From c00b4d1d0ed9a46ab4928015050539277ebade1c Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 22:39:10 -0700
Subject: [PATCH 11/12] build(cargo): update lockfile

---
 Cargo.lock                                    |   2 +-
 .../fixture/swc_internal_plugin/Cargo.lock    |   2 +-
 .../plugin_transform_schema_vtest/Cargo.lock  | 168 ++----------------
 3 files changed, 18 insertions(+), 154 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 8d4f1c6268e8..71742d8fc594 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3148,7 +3148,7 @@ dependencies = [
 
 [[package]]
 name = "swc_core"
-version = "0.1.0"
+version = "0.0.1"
 dependencies = [
  "once_cell",
  "swc_atoms",
diff --git a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
index 743c3b17e7d1..45e604b1495b 100644
--- a/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
+++ b/crates/swc_plugin_runner/tests/fixture/swc_internal_plugin/Cargo.lock
@@ -646,7 +646,7 @@ dependencies = [
 
 [[package]]
 name = "swc_core"
-version = "0.1.0"
+version = "0.0.1"
 dependencies = [
  "once_cell",
  "swc_atoms",
diff --git a/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.lock b/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.lock
index d81d99c1b177..4cb71842fe6d 100644
--- a/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.lock
+++ b/node-swc/e2e/fixtures/plugin_transform_schema_vtest/Cargo.lock
@@ -146,16 +146,6 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f107b87b6afc2a64fd13cac55fe06d6c8859f12d4b14cbcdd2c67d0976781be"
 
-[[package]]
-name = "enum_kind"
-version = "0.2.1"
-dependencies = [
- "pmutil",
- "proc-macro2",
- "swc_macros_common",
- "syn",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -219,16 +209,6 @@ dependencies = [
  "unicode-normalization",
 ]
 
-[[package]]
-name = "indexmap"
-version = "1.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
-dependencies = [
- "autocfg",
- "hashbrown",
-]
-
 [[package]]
 name = "is-macro"
 version = "0.2.1"
@@ -248,79 +228,6 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
-[[package]]
-name = "lexical"
-version = "6.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7aefb36fd43fef7003334742cbf77b243fcd36418a1d1bdd480d613a67968f6"
-dependencies = [
- "lexical-core",
-]
-
-[[package]]
-name = "lexical-core"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cde5de06e8d4c2faabc400238f9ae1c74d5412d03a7bd067645ccbc47070e46"
-dependencies = [
- "lexical-parse-float",
- "lexical-parse-integer",
- "lexical-util",
- "lexical-write-float",
- "lexical-write-integer",
-]
-
-[[package]]
-name = "lexical-parse-float"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "683b3a5ebd0130b8fb52ba0bdc718cc56815b6a097e28ae5a6997d0ad17dc05f"
-dependencies = [
- "lexical-parse-integer",
- "lexical-util",
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-parse-integer"
-version = "0.8.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d0994485ed0c312f6d965766754ea177d07f9c00c9b82a5ee62ed5b47945ee9"
-dependencies = [
- "lexical-util",
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-util"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5255b9ff16ff898710eb9eb63cb39248ea8a5bb036bea8085b1a767ff6c4e3fc"
-dependencies = [
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-write-float"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "accabaa1c4581f05a3923d1b4cfd124c329352288b7b9da09e766b0668116862"
-dependencies = [
- "lexical-util",
- "lexical-write-integer",
- "static_assertions",
-]
-
-[[package]]
-name = "lexical-write-integer"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1b6f3d1f4422866b68192d62f77bc5c700bee84f3069f2469d7bc8c77852446"
-dependencies = [
- "lexical-util",
- "static_assertions",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.126"
@@ -451,7 +358,7 @@ name = "plugin_transform_schema_vtest"
 version = "0.1.0"
 dependencies = [
  "serde",
- "swc_plugin",
+ "swc_core",
 ]
 
 [[package]]
@@ -661,12 +568,6 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
 [[package]]
 name = "string_cache"
 version = "0.8.4"
@@ -751,6 +652,20 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "swc_core"
+version = "0.0.1"
+dependencies = [
+ "once_cell",
+ "swc_atoms",
+ "swc_common",
+ "swc_ecma_ast",
+ "swc_ecma_visit",
+ "swc_plugin",
+ "swc_plugin_macro",
+ "swc_plugin_proxy",
+]
+
 [[package]]
 name = "swc_ecma_ast"
 version = "0.89.1"
@@ -768,37 +683,6 @@ dependencies = [
  "unicode-id",
 ]
 
-[[package]]
-name = "swc_ecma_parser"
-version = "0.116.0"
-dependencies = [
- "either",
- "enum_kind",
- "lexical",
- "num-bigint",
- "serde",
- "smallvec",
- "swc_atoms",
- "swc_common",
- "swc_ecma_ast",
- "tracing",
- "typed-arena",
-]
-
-[[package]]
-name = "swc_ecma_utils"
-version = "0.98.1"
-dependencies = [
- "indexmap",
- "once_cell",
- "swc_atoms",
- "swc_common",
- "swc_ecma_ast",
- "swc_ecma_visit",
- "tracing",
- "unicode-id",
-]
-
 [[package]]
 name = "swc_ecma_visit"
 version = "0.75.0"
@@ -811,16 +695,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "swc_ecmascript"
-version = "0.186.0"
-dependencies = [
- "swc_ecma_ast",
- "swc_ecma_parser",
- "swc_ecma_utils",
- "swc_ecma_visit",
-]
-
 [[package]]
 name = "swc_eq_ignore_macros"
 version = "0.1.0"
@@ -845,11 +719,7 @@ dependencies = [
 name = "swc_plugin"
 version = "0.88.2"
 dependencies = [
- "swc_atoms",
- "swc_common",
- "swc_ecmascript",
- "swc_plugin_macro",
- "swc_plugin_proxy",
+ "once_cell",
 ]
 
 [[package]]
@@ -950,12 +820,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "typed-arena"
-version = "2.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0685c84d5d54d1c26f7d3eb96cd41550adb97baed141a761cf335d3d33bcd0ae"
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.8"

From 46da5d3e2724e2926fbb987133ff5fd4f173792a Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Mon, 1 Aug 2022 23:26:31 -0700
Subject: [PATCH 12/12] refactor(swc/core): align feature cfg

---
 crates/swc_core/src/lib.rs    | 5 +++++
 crates/swc_core/src/plugin.rs | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/crates/swc_core/src/lib.rs b/crates/swc_core/src/lib.rs
index b9b65546734a..9b49e0bc18e5 100644
--- a/crates/swc_core/src/lib.rs
+++ b/crates/swc_core/src/lib.rs
@@ -2,18 +2,21 @@
 
 // Quote
 #[cfg(any(docsrs, feature = "quote"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "quote")))]
 pub mod quote {
     pub use swc_ecma_quote::*;
 }
 
 // Plugins
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__plugin_transform")))]
 pub mod plugin;
 
 // ast exposed via swc_ecma_ast
 // TODO: Can dependency tree simplified
 // by swc_ecma_ast reexports swc_atoms?
 #[cfg(any(docsrs, feature = "__ast"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__ast")))]
 pub mod ast {
     pub use swc_atoms::*;
     pub use swc_ecma_ast::*;
@@ -21,12 +24,14 @@ pub mod ast {
 
 // visit* interfaces
 #[cfg(any(docsrs, feature = "__visit"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__visit")))]
 pub mod visit {
     pub use swc_ecma_visit::*;
 }
 
 // swc_common features
 #[cfg(any(docsrs, feature = "__common"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__common")))]
 pub mod common {
     pub use swc_common::*;
 }
diff --git a/crates/swc_core/src/plugin.rs b/crates/swc_core/src/plugin.rs
index 15e604c5a3e2..8246ccd56d1a 100644
--- a/crates/swc_core/src/plugin.rs
+++ b/crates/swc_core/src/plugin.rs
@@ -1,5 +1,6 @@
 // #[plugin_transform] macro
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__plugin_transform")))]
 pub use swc_plugin_macro::plugin_transform;
 
 /// exported __alloc / __free fn for the guest (plugin)
@@ -13,6 +14,7 @@ pub mod memory {
 /// Global HANDLER implementation for the plugin
 /// for error reporting.
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__plugin_transform")))]
 pub mod errors {
     /// global context HANDLER in plugin's transform function.
     pub static HANDLER: swc_plugin::pseudo_scoped_key::PseudoScopedKey<
@@ -24,6 +26,7 @@ pub mod errors {
 
 /// Plugin's environment metadata context.
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__plugin_transform")))]
 pub mod metadata {
     pub use swc_common::plugin::metadata::TransformPluginMetadataContextKind;
     pub use swc_plugin_proxy::TransformPluginProgramMetadata;
@@ -31,6 +34,7 @@ pub mod metadata {
 
 /// Proxy to the host's data not attached to the AST, like sourcemap / comments.
 #[cfg(any(docsrs, feature = "__plugin_transform"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "__plugin_transform")))]
 pub mod proxies {
     pub use swc_plugin_proxy::*;
 }