feat(binding): Create Wasm package for stripping only TypeScript (#9124)

**Description:**

This PR adds a Wasm binding which is only capable of stripping TypeScript types.


**Related issue:**

 - marco-ippolito/node#2

.github/workflows/publish-core.yml

@@ -508,11 +508,14 @@ jobs:
       matrix:
         settings:
           - crate: "binding_core_wasm"
-            npm: "@swc/wasm"
+            npm: "@swc\\/wasm"
             target: nodejs
           - crate: "binding_core_wasm"
-            npm: "@swc/wasm-web"
+            npm: "@swc\\/wasm-web"
             target: web
+          - crate: "binding_typescript_wasm"
+            npm: "@swc\\/wasm-typescript"
+            target: no-modules
     steps:
       - uses: actions/checkout@v4
 

bindings/Cargo.toml

@@ -4,6 +4,7 @@ members = [
   "binding_core_wasm",
   "binding_minifier_node",
   "binding_minifier_wasm",
+  "binding_typescript_wasm",
   "swc_cli",
 ]
 resolver = "2"

bindings/binding_core_node/build.rs

@@ -17,7 +17,7 @@ fn main() {
     let out_dir = env::var("OUT_DIR").expect("Outdir should exist");
     let dest_path = Path::new(&out_dir).join("triple.txt");
     let mut f =
-        BufWriter::new(File::create(&dest_path).expect("Failed to create target triple text"));
+        BufWriter::new(File::create(dest_path).expect("Failed to create target triple text"));
     write!(
         f,
         "{}",

bindings/binding_minifier_node/src/minify.rs

@@ -7,8 +7,7 @@ use napi::{
 };
 use serde::Deserialize;
 use swc_compiler_base::{
-    minify_file_comments, parse_js, IdentCollector, IsModule, PrintArgs, SourceMapsConfig,
-    TransformOutput,
+    minify_file_comments, parse_js, IdentCollector, PrintArgs, SourceMapsConfig, TransformOutput,
 };
 use swc_config::config_types::BoolOr;
 use swc_core::{
@@ -23,7 +22,7 @@ use swc_core::{
             js::{JsMinifyCommentOption, JsMinifyOptions},
             option::{MinifyOptions, TopLevelOptions},
         },
-        parser::{EsConfig, Syntax},
+        parser::{EsSyntax, Syntax},
         transforms::base::{fixer::fixer, hygiene::hygiene, resolver},
         visit::{FoldWith, VisitMutWith, VisitWith},
     },
@@ -109,11 +108,30 @@ fn do_work(input: MinifyTarget, options: JsMinifyOptions) -> napi::Result<Transf
             ..Default::default()
         };
 
+        let comments = SingleThreadedComments::default();
+
+        let module = parse_js(
+            cm.clone(),
+            fm.clone(),
+            handler,
+            target,
+            Syntax::Es(EsSyntax {
+                jsx: true,
+                decorators: true,
+                decorators_before_export: true,
+                import_attributes: true,
+                ..Default::default()
+            }),
+            options.module,
+            Some(&comments),
+        )
+        .context("failed to parse input file")?;
+
         // top_level defaults to true if module is true
 
         // https://github.com/swc-project/swc/issues/2254
 
-        if options.module {
+        if module.is_module() {
             if let Some(opts) = &mut min_opts.compress {
                 if opts.top_level.is_none() {
                     opts.top_level = Some(TopLevelOptions { functions: true });
@@ -136,25 +154,6 @@ fn do_work(input: MinifyTarget, options: JsMinifyOptions) -> napi::Result<Transf
             }
         }
 
-        let comments = SingleThreadedComments::default();
-
-        let module = parse_js(
-            cm.clone(),
-            fm.clone(),
-            handler,
-            target,
-            Syntax::Es(EsConfig {
-                jsx: true,
-                decorators: true,
-                decorators_before_export: true,
-                import_attributes: true,
-                ..Default::default()
-            }),
-            IsModule::Bool(options.module),
-            Some(&comments),
-        )
-        .context("failed to parse input file")?;
-
         let source_map_names = if source_map.enabled() {
             let mut v = IdentCollector {
                 names: Default::default(),
@@ -172,7 +171,7 @@ fn do_work(input: MinifyTarget, options: JsMinifyOptions) -> napi::Result<Transf
 
         let is_mangler_enabled = min_opts.mangle.is_some();
 
-        let module = (|| {
+        let module = {
             let module = module.fold_with(&mut resolver(unresolved_mark, top_level_mark, false));
 
             let mut module = swc_core::ecma::minifier::optimize(
@@ -192,7 +191,7 @@ fn do_work(input: MinifyTarget, options: JsMinifyOptions) -> napi::Result<Transf
             }
             module.visit_mut_with(&mut fixer(Some(&comments as &dyn Comments)));
             module
-        })();
+        };
 
         let preserve_comments = options
             .format
@@ -211,7 +210,7 @@ fn do_work(input: MinifyTarget, options: JsMinifyOptions) -> napi::Result<Transf
                 inline_sources_content: options.inline_sources_content,
                 source_map,
                 source_map_names: &source_map_names,
-                orig: orig.as_ref(),
+                orig,
                 comments: Some(&comments),
                 emit_source_map_columns: options.emit_source_map_columns,
                 preamble: &options.format.preamble,

bindings/binding_typescript_wasm/Cargo.toml

@@ -0,0 +1,40 @@
+[package]
+authors     = ["강동윤 <kdy1997.dev@gmail.com>"]
+description = "wasm module for swc"
+edition     = "2021"
+license     = "Apache-2.0"
+name        = "binding_typescript_wasm"
+publish     = false
+repository  = "https://github.com/swc-project/swc.git"
+version     = "1.6.6"
+
+[lib]
+bench      = false
+crate-type = ["cdylib"]
+
+[features]
+default = ["swc_v1"]
+swc_v1  = []
+swc_v2  = []
+
+[dependencies]
+anyhow = "1.0.66"
+getrandom = { version = "0.2.10", features = ["js"] }
+serde = { version = "1", features = ["derive"] }
+serde-wasm-bindgen = "0.4.5"
+serde_json = "1.0.120"
+swc_core = { version = "0.95.10", features = [
+  "ecma_ast_serde",
+  "ecma_codegen",
+  "ecma_transforms",
+  "ecma_transforms_typescript",
+  "ecma_visit",
+] }
+swc_ecma_codegen = { version = "0.151.1", features = ["serde-impl"] }
+swc_error_reporters = "0.18.0"
+tracing = { version = "0.1.37", features = ["max_level_off"] }
+wasm-bindgen = { version = "0.2.82", features = ["enable-interning"] }
+wasm-bindgen-futures = { version = "0.4.41" }
+
+[package.metadata.wasm-pack.profile.release]
+wasm-opt = false

bindings/binding_typescript_wasm/package.json

@@ -0,0 +1,5 @@
+{
+    "devDependencies": {
+        "jest": "^25.1.0"
+    }
+}