Merge pull request #15 from Mogztter/esm

.github/workflows/build.yml

@@ -6,9 +6,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os:
-          - ubuntu-latest
-          - windows-latest
+        os: [ubuntu-latest]
         node-version:
           - 12.17
           - 14.x

README.md

@@ -9,6 +9,13 @@
 ## Usage
 
 ```javascript
-var Opal = require('opal-runtime').Opal;
+import Opal from 'asciidoctor-opal-runtime'
+// Now let's have fun with Opal!
+```
+
+This library is also available as a CommonJS module:
+
+```javascript
+const Opal = require('asciidoctor-opal-runtime')
 // Now let's have fun with Opal!
 ```

package.json

@@ -20,8 +20,14 @@
   "directories": {
     "lib": "src"
   },
-  "main": "src/index.js",
+  "type": "module",
+  "main": "./src/index.cjs",
+  "exports": {
+    "import": "./src/index.js",
+    "require": "./src/index.cjs"
+  },
   "scripts": {
+    "build": "rollup --config",
     "test": "mocha spec/*.spec.js",
     "lint": "standard src/index.js spec"
   },
@@ -39,6 +45,12 @@
     "chai": "4.2.0",
     "dirty-chai": "^2.0.1",
     "mocha": "8.2.0",
+    "rollup": "^2.10.9",
     "standard": "16.0.0"
+  },
+  "standard": {
+    "env": {
+      "mocha": true
+    }
   }
 }

rollup.config.js

@@ -0,0 +1,8 @@
+export default {
+  input: 'src/index.js',
+  output: {
+    file: 'src/index.cjs',
+    format: 'cjs',
+  },
+  external: [ 'fs', 'glob', 'os', 'path', 'unxhr', 'util' ]
+}

spec/main.spec.js

@@ -1,9 +1,10 @@
-/* global describe, it */
-const chai = require('chai')
-const dirtyChai = require('dirty-chai')
-const expect = chai.expect
+import chai from 'chai'
+import dirtyChai from 'dirty-chai'
+import 'mocha'
+import Opal from '../src/index.js'
 
 chai.use(dirtyChai)
+const expect = chai.expect
 
 const fundamentalObjects = [
   Function,
@@ -23,8 +24,6 @@ for (const index in fundamentalObjects) {
   fundamentalToStringValues.push(fundamentalObject.toString())
 }
 
-const Opal = require('../src/index').Opal
-
 describe('Opal Node Runtime', function () {
   describe('When loaded', function () {
     it('should export Opal object', function () {