turn into a ES module

Author: mourner

.gitignore

@@ -0,0 +1,2 @@
+quickselect.js
+*.log

bench.js

@@ -1,6 +1,5 @@
-'use strict';
 
-var quickselect = require('./');
+import quickselect from './';
 
 var N = 10000000;
 var arr = [];

index.js

@@ -1,9 +1,5 @@
-'use strict';
 
-module.exports = quickselect;
-module.exports.default = quickselect;
-
-function quickselect(arr, k, left, right, compare) {
+export default function quickselect(arr, k, left, right, compare) {
     quickselectStep(arr, k, left || 0, right || (arr.length - 1), compare || defaultCompare);
 }
 

package.json

@@ -2,20 +2,33 @@
   "name": "quickselect",
   "version": "1.0.1",
   "description": "A tiny and fast selection algorithm in JavaScript.",
-  "main": "index.js",
+  "module": "index.js",
+  "main": "quickselect.js",
   "dependencies": {},
   "devDependencies": {
     "eslint": "^4.19.1",
     "eslint-config-mourner": "^2.0.3",
+    "esm": "^3.0.15",
+    "rollup": "^0.57.1",
     "tape": "^4.9.0"
   },
   "eslintConfig": {
-    "extends": "mourner"
+    "extends": "mourner",
+    "parserOptions": {
+      "sourceType": "module"
+    }
   },
   "scripts": {
-    "pretest": "eslint index.js test.js",
-    "test": "tape test.js"
+    "pretest": "eslint index.js test.js bench.js",
+    "test": "node -r esm test.js",
+    "bench": "node -r esm bench.js",
+    "build": "rollup -c",
+    "prepublishOnly": "npm run build"
   },
+  "files": [
+    "index.js",
+    "quickselect.js"
+  ],
   "keywords": [
     "selection",
     "algorithm",

rollup.config.js

@@ -0,0 +1,9 @@
+export default {
+    input: 'index.js',
+    output: {
+        name: 'quickselect',
+        format: 'umd',
+        file: 'quickselect.js',
+        indent: false
+    }
+};

test.js

@@ -1,7 +1,6 @@
-'use strict';
 
-var test = require('tape').test;
-var quickselect = require('./');
+import test from 'tape';
+import quickselect from './';
 
 test('selection', function (t) {
     var arr = [65, 28, 59, 33, 21, 56, 22, 95, 50, 12, 90, 53, 28, 77, 39];