Distribute +stdlib versions within npm packages

packages/npm-packages/ruby-wasm-wasi/build-package.sh

@@ -31,5 +31,15 @@ wit-bindgen js \
 wasm-opt --strip-debug "$ruby_root/usr/local/bin/ruby" -o "$dist_dir/ruby.wasm"
 cp "$ruby_root/usr/local/bin/ruby" "$dist_dir/ruby.debug.wasm"
 
+# Build +stdlib versions (removing files that are not used in normal use cases)
+workdir="$(mktemp -d)"
+cp -R "$ruby_root" "$workdir/ruby-root"
+rm -rf $workdir/ruby-root/usr/local/include
+rm -f $workdir/ruby-root/usr/local/lib/libruby-static.a
+rm -f $workdir/ruby-root/usr/local/bin/ruby
+wasi-vfs pack "$dist_dir/ruby.wasm" --mapdir /usr::$workdir/ruby-root/usr -o "$dist_dir/ruby+stdlib.wasm"
+wasi-vfs pack "$dist_dir/ruby.debug.wasm" --mapdir /usr::$workdir/ruby-root/usr -o "$dist_dir/ruby.debug+stdlib.wasm"
+
+
 mkdir "$dist_dir/bindgen"
 cp $(find "$package_dir/src/bindgen" -name "*.js" -or -name "*.d.ts") "$dist_dir/bindgen"

packages/npm-packages/ruby-wasm-wasi/src/index.ts

@@ -17,6 +17,7 @@ import { addRbJsAbiHostToImports, JsAbiValue } from "./bindgen/rb-js-abi-host";
  * const instance = await WebAssembly.instantiate(rubyModule, imports);
  * await vm.setInstance(instance);
  * wasi.initialize(instance);
+ * vm.initialize();
  *
  */
 export class RubyVM {

packages/npm-packages/ruby-wasm-wasi/test/package.test.ts

@@ -0,0 +1,48 @@
+import fs from "fs/promises";
+import path from "path";
+import { WASI } from "wasi";
+import { RubyVM } from "../dist/index.umd.js";
+
+const initRubyVM = async (rubyModule: WebAssembly.Module, args: string[]) => {
+  const wasi = new WASI();
+  const vm = new RubyVM();
+  const imports = {
+    wasi_snapshot_preview1: wasi.wasiImport,
+  };
+
+  vm.addToImports(imports);
+
+  const instance = await WebAssembly.instantiate(rubyModule, imports);
+
+  await vm.setInstance(instance);
+
+  wasi.initialize(instance);
+  vm.initialize();
+
+  return {
+    vm,
+    wasi,
+    instance,
+  };
+};
+
+describe("Packaging validation", () => {
+  jest.setTimeout(20 /*sec*/ * 1000);
+
+  test.each([
+    { file: "ruby+stdlib.wasm", stdlib: true },
+    { file: "ruby.debug.wasm", stdlib: false },
+    { file: "ruby.debug+stdlib.wasm", stdlib: true },
+  ])("Load all variants", async ({ file, stdlib }) => {
+    const binary = await fs.readFile(path.join(__dirname, `./../dist/${file}`));
+    const mod = await WebAssembly.compile(binary.buffer);
+    const { vm } = await initRubyVM(mod, ["ruby.wasm", "-e_=0"]);
+    // Check loading ext library
+    vm.eval(`require "stringio"`)
+    if (stdlib) {
+      // Check loading stdlib gem
+      vm.eval(`require "English"`)
+    }
+  });
+
+});