WIP: rollup-plugin-node-builtins

packages/node-builtins/README.md

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+# @rollup/plugin-node-builtins
+
+```
+npm install --save-dev @rollup/plugin-node-builtins
+```
+
+Allows the node builtins to be `require`d/`import`ed. Doing so gives the proper shims to support modules that were designed for Browserify, some modules require [rollup-plugin-node-globals](https://github.com/calvinmetcalf/rollup-plugin-node-globals).
+
+The following modules include ES6 specific version which allow you to do named imports in addition to the default import and should work fine if you only use this plugin.
+
+- process\*
+- events
+- stream\*
+- util\*
+- path
+- buffer\*
+- querystring
+- url\*
+- string_decoder\*
+- punycode
+- http\*†
+- https\*†
+- os\*
+- assert\*
+- constants
+- timers\*
+- console\*‡
+- vm\*§
+- zlib\*
+- tty
+- domain
+- dns∆
+- dgram∆
+- child_process∆
+- cluster∆
+- module∆
+- net∆
+- readline∆
+- repl∆
+- tls∆
+- fs˚
+- crypto˚
+
+\* requires [node-globals plugin](https://github.com/calvinmetcalf/rollup-plugin-node-globals)
+
+† the http and https modules are actually the same and don't differentiate based on protocol
+
+‡ default export only, because it's console, seriously just use the global
+
+§ vm does not have all corner cases and has less of them in a web worker
+
+∆ not shimmed, just returns mock
+
+˚ optional, add option to enable browserified shim
+
+Crypto is not shimmed and and we just provide the commonjs one from browserify and it will likely not work, if you really want it please pass `{crypto: true}` as an option.
+
+Not all included modules rollup equally, streams (and by extension anything that requires it like http) are a mess of circular references that are pretty much impossible to tree-shake out, similarly url methods are actually a shortcut to a url object so those methods don't tree shake out very well, punycode, path, querystring, events, util, and process tree shake very well especially if you do named imports.
+
+config for using this with something simple like events or querystring
+
+```js
+import builtins from 'rollup-plugin-node-builtins';
+rollup({
+  entry: 'main.js',
+  plugins: [builtins()]
+});
+```
+
+and now if main contains this, it should just work
+
+```js
+import EventEmitter from 'events';
+import { inherits } from 'util';
+
+// etc
+```
+
+Config for something more complicated like http
+
+```js
+import builtins from 'rollup-plugin-node-builtins';
+import globals from 'rollup-plugin-node-globals';
+rollup({
+  entry: 'main.js',
+  plugins: [globals(), builtins()]
+});
+```
+
+# License
+
+MIT except ES6 ports of browserify modules which are whatever the original library was.

packages/node-builtins/build-constants.js

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+const fs = require('fs');
+const constants = require('constants');
+const path = require('path');
+
+const out = fs.createWriteStream(path.join(__dirname, 'dist', 'constants.js'));
+
+Object.keys(constants).forEach((key) => {
+  const value = constants[key];
+  out.write(`export var ${key} = ${JSON.stringify(value)};\n`);
+});
+out.write('export default {\n  ');
+Object.keys(constants).forEach((key, i) => {
+  if (i) {
+    out.write(',\n  ');
+  }
+  out.write(`${key}: ${key}`);
+});
+out.end('\n};\n');

packages/node-builtins/package.json

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+{
+  "name": "@rollup/plugin-node-builtins",
+  "version": "2.1.1",
+  "description": "use node builtins in browser with rollup",
+  "license": "ISC",
+  "repository": {
+    "type": "git",
+    "url": "git@github.com:calvinmetcalf/rollup-plugin-node-builtins.git"
+  },
+  "author": "",
+  "main": "dist/rollup-plugin-node-builtins.cjs.js",
+  "scripts": {
+    "build": "rollup -c -f cjs -o dist/rollup-plugin-node-builtins.cjs.js && rollup -c -f es -o dist/rollup-plugin-node-builtins.es6.js && node build-constants.js",
+    "prebuild": "rm -rf dist && mkdir dist",
+    "prepublish": "npm test",
+    "pretest": "npm run build",
+    "test": "mocha"
+  },
+  "keywords": [
+    "rollup-plugin"
+  ],
+  "dependencies": {
+    "browserify-fs": "^1.0.0",
+    "buffer-es6": "^4.9.2",
+    "crypto-browserify": "^3.11.0",
+    "process-es6": "^0.11.2"
+  },
+  "devDependencies": {
+    "babel-preset-es2015-rollup": "^3.0.0",
+    "debug": "^2.2.0",
+    "mocha": "^3.0.2",
+    "rollup": "^0.37.0",
+    "rollup-plugin-babel": "^2.4.0",
+    "rollup-plugin-node-globals": "^1.0.7",
+    "serve": "^2.0.0"
+  },
+  "jsnext:main": "dist/rollup-plugin-node-builtins.es6.js"
+}

packages/node-builtins/rollup.config.js

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+import babel from 'rollup-plugin-babel';
+
+const external = Object.keys(require('./package.json').dependencies).concat('path');
+
+export default {
+  entry: 'src/index.js',
+  plugins: [babel()],
+  external
+};