feat: Add wasm module build

.gitignore

@@ -2,3 +2,4 @@
 ^target/
 target
 tests/*/instrumented.*
+pkg/

Cargo.toml

@@ -6,18 +6,28 @@ rust-version = "1.84.1"
 license = "Apache-2.0"
 
 [lib]
-# crate-type = ["cdylib"]
-# This was originally set as above, but commented to run tests in tests folder.
+crate-type = ["cdylib", "rlib"]
 
-[profile.release]
-lto = true
+[features]
+wasm = ["wasm-bindgen", "tsify", "getrandom"]
 
 [dependencies]
-nodejs-semver = "4"
+nodejs-semver = { version = "4", features = ["serde"] }
 swc = "21"
 swc_core = { version = "22", features = ["ecma_plugin_transform","ecma_quote"] }
 swc_ecma_parser = "11"
 swc_ecma_visit = { version = "8", features = ["path"] }
+serde = { version = "1", features = ["derive"] }
+
+# wasm
+wasm-bindgen = { version = "0.2", optional = true }
+tsify = { version='0.5', features = ["js"], optional = true}
+# we need this to enable the js feature
+getrandom = { version = "*", features = ["js"], optional = true }
 
 [dev-dependencies]
 assert_cmd = "2"
+
+[profile.release]
+lto = true
+opt-level = "s"

README.md

@@ -1,8 +1,21 @@
 # Orchestion-JS
 
-Orchestrion is a library for instrumenting Node.js libraries at build or load time.
-It provides [`VisitMut`] implementations for SWC's AST nodes, which can be used to insert tracing code into matching functions.
-It's entirely configurable via a YAML string, and can be used in SWC plugins, or anything else that mutates JavaScript ASTs using SWC.
+Orchestrion is a library for instrumenting Node.js libraries at build or load
+time.
+
+It provides `VisitMut` implementations for SWC's AST nodes, which can be used to
+insert tracing code into matching functions. It can be used in SWC plugins, or
+anything else that mutates JavaScript ASTs using SWC.
+
+Orchestrion can also be built as a JavaScript module, which can be used from
+Node.js.
+
+To build the JavaScript module, ensure you have
+[Rust installed](https://www.rust-lang.org/tools/install) and then run:
+
+```bash
+npm install && npm run build
+```
 
 ## Contributing
 
@@ -11,5 +24,3 @@ See CONTRIBUTING.md
 ## License
 
 See LICENSE
-
-[`VisitMut`]: https://rustdoc.swc.rs/swc_core/ecma/visit/trait.VisitMut.html