nixpkgs/pkgs/development/compilers/emscripten/package.json

{
  "name": "emscripten",
  "version": "2.0.1",
  "private": true,
  "devDependencies": {
    "ws": "~0.4.28"
  },
  "dependencies": {
    "google-closure-compiler": "20200224.0.0",
    "html-minifier-terser": "5.0.2",
    "source-map": "0.5.6",
    "wasm2c": "1.0.0",
    "acorn": "7.3.1"
  }
}