chore: ESM only

BREAKING CHANGE: module is now ESM only

.karma.config.js → .karma.config.cjs

@@ -2,18 +2,10 @@ module.exports = function (config) {
   config.set({
     frameworks: ['mocha', 'chai'],
     files: [
-      'slug.js',
-      'node_modules/requirejs/require.js', // Used to test loading via AMD.
-      'test/**/*.js',
+      { pattern: 'slug.js', type: 'module' },
+      { pattern: 'test/**/*.js', type: 'module' }
     ],
-    preprocessors: { 'slug.js': 'coverage' },
-    reporters: ['progress', 'coverage'],
-    coverageReporter: {
-      dir: '.nyc_output',
-      reporters: [
-        { type: 'json', subdir: '.', file: 'karma.json' }
-      ]
-    },
+    reporters: ['progress'],
     port: 9876,
     colors: true,
     logLevel: config.LOG_INFO,

README.md

@@ -6,7 +6,7 @@ Make strings URL-safe.
 
 - Respects [RFC 3986](https://tools.ietf.org/html/rfc3986)
 - No dependencies
-- Works in browser (`window.slug`) and AMD/CommonJS-flavoured module loaders
+- Works in the browser or in Node.js
 
 ```
 npm install slug
@@ -36,7 +36,7 @@ Here are some key differences between this package and [`slugify`](https://githu
 ## Example
 
 ```javascript
-var slug = require('slug')
+import slug from 'slug'
 var print = console.log.bind(console, '>')
 
 print(slug('i love unicode'))

benchmark/benchmark.js

@@ -1,4 +1,4 @@
-const slug = require('../slug')
+import slug from '../slug.js'
 
 const BENCHMARK_RUNS = 2048
 const MAX_WORD_LENGTH = 16