feat(es/transforms): Add experimental output API for transforms (#9000)

**Description:**

This interface will provide a way to emit some outputs from transforms. This data will be emitted back to the JS caller.

.github/workflows/CI.yml

@@ -551,12 +551,18 @@ jobs:
           - crate: swc_trace_macro
             os: ubuntu-latest
             runner: ubuntu-latest
+          - crate: swc_transform_common
+            os: ubuntu-latest
+            runner: ubuntu-latest
           - crate: swc_visit
             os: ubuntu-latest
             runner: ubuntu-latest
           - crate: swc_visit_macros
             os: ubuntu-latest
             runner: ubuntu-latest
+          - crate: swc_x_optimizer
+            os: ubuntu-latest
+            runner: ubuntu-latest
           - crate: swc_xml
             os: ubuntu-latest
             runner: ubuntu-latest

Cargo.toml

@@ -22,9 +22,13 @@ members = [
   "crates/swc_timer",
   "crates/swc_xml",
   "crates/swc_x_optimizer",
+  "crates/swc_transform_common",
 ]
 resolver = "2"
 
+  [workspace.package]
+  repository = "https://github.com/swc-project/swc.git"
+
   [workspace.dependencies]
   # bytecheck version should be in sync with rkyv version. Do not bump individually.
   bytecheck = "0.6.10"

crates/dbg-swc/Cargo.toml

@@ -1,11 +1,11 @@
 [package]
-authors     = ["강동윤 <kdy1997.dev@gmail.com>"]
-description = "Debug utilities"
-edition     = "2021"
-license     = "Apache-2.0"
-name        = "dbg-swc"
-repository  = "https://github.com/kdy1/dbg-swc.git"
-version     = "0.93.5"
+authors              = ["강동윤 <kdy1997.dev@gmail.com>"]
+description          = "Debug utilities"
+edition              = "2021"
+license              = "Apache-2.0"
+name                 = "dbg-swc"
+repository.workspace = true
+version              = "0.93.5"
 
 [[bin]]
 bench = false

crates/jsdoc/Cargo.toml

@@ -1,12 +1,13 @@
 [package]
-authors       = ["강동윤 <kdy1997.dev@gmail.com>"]
-description   = "JsDoc parser writen in rust"
-documentation = "https://rustdoc.swc.rs/jsdoc/"
-edition       = "2021"
-include       = ["Cargo.toml", "src/**/*.rs"]
-license       = "Apache-2.0"
-name          = "jsdoc"
-version       = "0.113.1"
+authors              = ["강동윤 <kdy1997.dev@gmail.com>"]
+description          = "JsDoc parser writen in rust"
+documentation        = "https://rustdoc.swc.rs/jsdoc/"
+edition              = "2021"
+include              = ["Cargo.toml", "src/**/*.rs"]
+license              = "Apache-2.0"
+name                 = "jsdoc"
+repository.workspace = true
+version              = "0.113.1"
 
 [lib]
 bench = false

crates/preset_env_base/Cargo.toml

@@ -1,11 +1,12 @@
 [package]
-authors       = ["강동윤 <kdy1997.dev@gmail.com>"]
-description   = "Common logic for targetting vairous browsers"
-documentation = "https://rustdoc.swc.rs/preset_env_base/"
-edition       = "2021"
-license       = "Apache-2.0"
-name          = "preset_env_base"
-version       = "0.4.13"
+authors              = ["강동윤 <kdy1997.dev@gmail.com>"]
+description          = "Common logic for targetting vairous browsers"
+documentation        = "https://rustdoc.swc.rs/preset_env_base/"
+edition              = "2021"
+license              = "Apache-2.0"
+name                 = "preset_env_base"
+repository.workspace = true
+version              = "0.4.13"
 
 [lib]
 bench = false

crates/swc_ecma_preset_env/Cargo.toml

@@ -1,13 +1,13 @@
 [package]
-authors       = ["강동윤 <kdy1997.dev@gmail.com>"]
-description   = "preset-env for the swc"
-documentation = "https://rustdoc.swc.rs/swc_ecma_preset_env/"
-edition       = "2021"
-include       = ["Cargo.toml", "src/**/*.rs", "src/**/*.json", "data/**/*.json"]
-license       = "Apache-2.0"
-name          = "swc_ecma_preset_env"
-repository    = "https://github.com/swc-project/swc"
-version       = "0.207.1"
+authors              = ["강동윤 <kdy1997.dev@gmail.com>"]
+description          = "preset-env for the swc"
+documentation        = "https://rustdoc.swc.rs/swc_ecma_preset_env/"
+edition              = "2021"
+include              = ["Cargo.toml", "src/**/*.rs", "src/**/*.json", "data/**/*.json"]
+license              = "Apache-2.0"
+name                 = "swc_ecma_preset_env"
+repository.workspace = true
+version              = "0.207.1"
 
 [lib]
 bench = false

crates/swc_transform_common/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+authors       = ["강동윤 <kdy1997.dev@gmail.com>"]
+description   = "Common utilities for swc transforms for any language"
+documentation = "https://rustdoc.swc.rs/swc_transform_common/"
+edition       = "2021"
+license       = "Apache-2.0"
+name          = "swc_transform_common"
+repository    = "https://github.com/swc-project/swc.git"
+version       = "0.1.0"
+
+  [package.metadata.docs.rs]
+  all-features = true
+  rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+once_cell  = { workspace = true }
+rustc-hash = { workspace = true }
+serde      = { workspace = true }
+serde_json = { workspace = true }
+
+better_scoped_tls = { version = "0.1.1", path = "../better_scoped_tls" }

crates/swc_transform_common/README.md

@@ -0,0 +1,3 @@
+# swc_transform_common
+
+Common utilities for the author of a swc transform.

crates/swc_transform_common/src/lib.rs

@@ -0,0 +1 @@
+pub mod output;

crates/swc_transform_common/src/output.rs

@@ -0,0 +1,25 @@
+use std::cell::RefCell;
+
+use better_scoped_tls::scoped_tls;
+use rustc_hash::FxHashMap;
+use serde_json::Value;
+
+scoped_tls!(static OUTPUT: RefCell<FxHashMap<String, Value>>);
+
+pub fn capture<Ret>(f: impl FnOnce() -> Ret) -> (Ret, FxHashMap<String, Value>) {
+    let output = RefCell::new(FxHashMap::default());
+
+    let ret = OUTPUT.set(&output, f);
+
+    (ret, output.into_inner())
+}
+
+pub fn emit(key: String, value: Value) {
+    OUTPUT.with(|output| {
+        let previous = output.borrow_mut().insert(key, value);
+
+        if let Some(previous) = previous {
+            panic!("Key already set. Previous value: {previous:?}");
+        }
+    });
+}

scripts/github/create-matrix.sh

@@ -6,10 +6,8 @@ SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 function prepend() { while read line; do echo "${1}${line}"; done; }
 
 crates=$(\
-    cargo metadata --format-version 1 \
-        | jq -r '.workspace_members[]' \
-        | cut -f1 -d" " \
-        | sort \
+    cargo metadata --format-version=1 --all-features \
+    | jq '.packages .[] | select(.repository == "https://github.com/swc-project/swc.git") | .name' -r\
 )
 
 # yq query syntax is weird, so we have to use jq