feat: hybrid CommonJS & ECMAScript modules build

BREAKING CHANGE: Convert code base to ECMAScript Modules (ESM) and
release CommonJS build for node and ESM build for browser bundlers.

Author: broofa

.babelrc.js

@@ -0,0 +1,19 @@
+module.exports = {
+  presets: [],
+  plugins: [],
+  env: {
+    commonjs: {
+      plugins: [
+        'babel-plugin-add-module-exports',
+      ],
+      presets: [
+        ['@babel/preset-env', {targets: {node: '8'}, modules: 'commonjs'}],
+      ],
+    },
+    esm: {
+      presets: [
+        ['@babel/preset-env', {modules: false}],
+      ],
+    },
+  },
+};

.eslintignore

@@ -0,0 +1 @@
+!.babelrc.js

.eslintrc.json

@@ -3,13 +3,15 @@
   "env": {
     "browser": true,
     "commonjs": true,
+    "es6": true,
     "mocha": true,
     "node": true
   },
   "extends": ["eslint:recommended"],
   "globals": {
     "msCrypto": true
   },
+  "parser": "babel-eslint",
   "rules": {
     "array-bracket-spacing": ["warn", "never"],
     "arrow-body-style": ["warn", "as-needed"],

.gitignore

@@ -2,3 +2,5 @@
 .idea/**
 .DS_Store
 node_modules
+tmp
+dist/

README_js.md

@@ -1,7 +1,7 @@
 ```javascript --hide
 runmd.onRequire = path => {
   if (path == 'rng') return fun
-  return path.replace(/^uuid/, './');
+  return path.replace(/^uuid/, './dist/');
 }
 
 // Shim Date and crypto so generated ids are consistent across doc revisions