Add a build step and produce ES6 files.

.eslintrc.js

@@ -0,0 +1,37 @@
+module.exports = {
+  'parser': 'typescript-eslint-parser',
+  'globals': {
+    'Pretender': true,
+    'sinon': true, // karma-sinon
+  },
+  'env': {
+    'browser': true,
+    'es6': true,
+    'node': true,
+    'jquery': true,
+    'qunit': true,
+  },
+  'extends': 'eslint:recommended',
+  'parserOptions': {
+    'ecmaVersion': 2015,
+    'sourceType': 'module'
+  },
+  'rules': {
+    'indent': [
+      'error',
+      2
+    ],
+    'linebreak-style': [
+      'error',
+      'unix'
+    ],
+    'quotes': [
+      'error',
+      'single'
+    ],
+    'semi': [
+      'error',
+      'always'
+    ]
+  }
+};

.gitignore

@@ -1,3 +1,4 @@
 bower_components
 node_modules
-coverage*
+coverage*
+dist

.travis.yml

@@ -1,10 +1,9 @@
 sudo: false
 language: node_js
 node_js:
-  - "4.2"
-  - "5"
   - "6"
   - "8"
+  - "10"
 
 before_install:
   - "npm config set spin false"

README.md

@@ -12,8 +12,6 @@ with an express/sinatra style syntax for defining routes and their handlers.
 Pretender will temporarily replace native XMLHttpRequest and Fetch , intercept
 all requests, and direct them to little pretend service you've defined.
 
-**:warning: Pretender only works in the browser!**
-
 ```javascript
 const PHOTOS = {
   "10": {
@@ -40,6 +38,23 @@ const server = new Pretender(function() {
 $.get('/photos/12', {success() => { ... }})
 ```
 
+## Usage examples
+
+You can load Pretender directly in the browser.
+
+```javascript
+<script src="pretender.js"></script>
+```
+
+Or as a module.
+
+```javascript
+import Pretender from 'pretender';
+const server = new Pretender(function() {});
+```
+
+Full example: [use-pretender-as-a-module](https://github.com/givanse/use-pretender-as-a-module)
+
 ## The Server DSL
 The server DSL is inspired by express/sinatra. Pass a function to the Pretender constructor
 that will be invoked with the Pretender instance as its context. Available methods are

karma.conf.js

@@ -1,5 +1,6 @@
 // Karma configuration
 // Generated on Thu Oct 06 2016 14:24:14 GMT+0800 (PHT)
+const typescript = require('rollup-plugin-typescript');
 
 module.exports = function(config) {
   config.set({
@@ -21,9 +22,13 @@ module.exports = function(config) {
       'bower_components/jquery/dist/jquery.js',
       'node_modules/es6-promise/dist/es6-promise.auto.js',
       'node_modules/abortcontroller-polyfill/dist/abortcontroller-polyfill-only.js',
-      'node_modules/@xg-wang/whatwg-fetch/dist/fetch.umd.js',
+      'node_modules/whatwg-fetch/dist/fetch.umd.js',
       'pretender.js',
-      'test/**/*.js'
+      /**
+       * Make sure to disable Karma’s file watcher
+       * because the preprocessor will use its own.
+       */
+      { pattern: 'test/**/*_test.[j|t]s', watched: false }
     ],
 
     // list of files to exclude
@@ -35,7 +40,26 @@ module.exports = function(config) {
     // preprocess matching files before serving them to the browser
     // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
     preprocessors: {
-        'pretender.js': ['coverage']
+        'pretender.js': ['coverage'],
+        'test/**/*_test.[j|t]s': ['rollup'],
+    },
+    rollupPreprocessor: {
+      /**
+       * This is just a normal Rollup config object,
+       * except that `input` is handled for you.
+       */
+      external: ['QUnit'],
+      plugins: [
+        typescript()
+      ],
+      output: {
+        format: 'iife',            // Helps prevent naming collisions.
+        name: 'pretendertests',    // Required for 'iife' format.
+        sourcemap: 'inline',       // Sensible for testing.
+        globals: [
+          'Qunit',
+        ],
+      },
     },
 
     coverageReporter: {