Distribute +stdlib versions within npm packages

Author: kateinoigakukun

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"