turn Delaunator into a ES module

README.md

@@ -22,10 +22,22 @@ console.log(delaunay.triangles);
 
 ## Install
 
-Install with NPM (`npm install delaunator`), or use the following builds in the browser:
+Install with NPM (`npm install delaunator`) or Yarn (`yarn add delaunator`), then:
 
-- [development build](https://unpkg.com/[email protected]/delaunator.js)
-- [minified build](https://unpkg.com/[email protected]/delaunator.min.js)
+```js
+// import as an ES module
+import Delaunator from 'delaunator';
+
+// or require in Node / Browserify
+const Delaunator = require('delaunator');
+```
+
+Or use a browser build directly:
+
+```html
+<script src="https://unpkg.com/[email protected]/delaunator.min.js"></script> <!-- minified build -->
+<script src="https://unpkg.com/[email protected]/delaunator.js"></script> <!-- dev build -->
+```
 
 ## API Reference
 

bench.js

@@ -1,6 +1,6 @@
-'use strict'; /* eslint no-new: 0, no-unused-vars: 0 */
+/* eslint no-unused-vars: 0 */
 
-var Delaunator = require('./');
+var Delaunator = require('./index.js').default;
 // var fasterDelaunay = require('faster-delaunay');
 // var incrementalDelaunay = require('incremental-delaunay');
 // var delaunayFast = require('delaunay-fast');

index.js

@@ -1,7 +1,3 @@
-'use strict';
-
-module.exports = Delaunator;
-module.exports.default = Delaunator;
 
 Delaunator.from = function (points, getX, getY) {
     if (!getX) getX = defaultGetX;
@@ -19,7 +15,7 @@ Delaunator.from = function (points, getX, getY) {
     return new Delaunator(coords);
 };
 
-function Delaunator(coords) {
+export default function Delaunator(coords) {
     if (!ArrayBuffer.isView(coords)) throw new Error('Expected coords to be a typed array.');
 
     var minX = Infinity;

package.json

@@ -2,35 +2,41 @@
   "name": "delaunator",
   "version": "1.0.5",
   "description": "A really fast JavaScript library for Delaunay triangulation of 2D points",
-  "main": "index.js",
-  "jsdelivr": "delaunator.js",
-  "unpkg": "delaunator.js",
+  "main": "delaunator.js",
+  "module": "index.js",
+  "jsdelivr": "delaunator.min.js",
+  "unpkg": "delaunator.min.js",
   "dependencies": {},
   "devDependencies": {
-    "browserify": "^14.5.0",
     "eslint": "^4.0.0",
     "eslint-config-mourner": "^2.0.1",
-    "tape": "^4.6.3",
-    "uglify-js": "^3.2.0"
+    "esm": "^3.0.8",
+    "rollup": "^0.57.1",
+    "rollup-plugin-uglify": "^3.0.0",
+    "tape": "^4.6.3"
   },
   "repository": {
     "type": "git",
     "url": "https://github.com/mapbox/delaunator.git"
   },
   "scripts": {
     "lint": "eslint index.js test.js bench.js",
-    "pretest": "npm run lint",
-    "test": "tape test.js",
-    "build": "browserify index.js -s Delaunator -o delaunator.js",
-    "build-min": "browserify index.js -s Delaunator | uglifyjs -c -m > delaunator.min.js",
-    "prepare": "npm run build && npm run build-min"
+    "pretest": "npm run lint && npm run build",
+    "test": "node test.js",
+    "bench": "node -r esm bench.js",
+    "build": "rollup -c",
+    "prepublishOnly": "npm test && npm run build"
   },
   "files": [
+    "index.js",
     "delaunator.js",
     "delaunator.min.js"
   ],
   "eslintConfig": {
-    "extends": "mourner"
+    "extends": "mourner",
+    "parserOptions": {
+      "sourceType": "module"
+    }
   },
   "keywords": [
     "delaunay triangulation",

rollup.config.js

@@ -0,0 +1,16 @@
+import uglify from 'rollup-plugin-uglify'
+
+const config = (file, plugins) => ({
+    input: 'index.js',
+    output: {
+        name: 'Delaunator',
+        format: 'umd',
+        file
+    },
+    plugins
+});
+
+export default [
+    config('delaunator.js', []),
+    config('delaunator.min.js', [uglify()])
+];