Use rollup to build the code and generate CommonJS and UMD versions

bin/build.js

@@ -33,18 +33,12 @@ var build = () => {
     'utf8'
   )
 
-  // update slugify
-  var source =
-    fs.readFileSync(path.resolve(__dirname, '../slugify.js'), 'utf8')
-      .replace(
-        /var charMap = JSON\.parse\(.*\)/,
-        `var charMap = JSON.parse('${JSON.stringify(sort(charmap)).replace(/'/g, '\\\'')}')`
-      )
-      .replace(
-        /var locales = JSON\.parse\(.*\)/,
-        `var locales = JSON.parse('${JSON.stringify(clean(locales))}')`
-      )
-  fs.writeFileSync(path.resolve(__dirname, '../slugify.js'), source, 'utf8')
+  // update locales.json in src folder
+  fs.writeFileSync(
+    path.resolve(__dirname, '../src/locales.json'),
+    JSON.stringify(clean(locales), null, 2),
+    'utf8'
+  )
 }
 
 build()

package.json

@@ -18,18 +18,25 @@
   "devDependencies": {
     "coveralls": "^3.1.0",
     "mocha": "^7.2.0",
-    "nyc": "^15.1.0"
+    "nyc": "^15.1.0",
+    "rollup": "^1.32.1",
+    "@rollup/plugin-json": "^4.1.0"
   },
-  "main": "./slugify.js",
+  "main": "./slugify.cjs.js",
+  "module": "./slugify.mjs",
+  "unpkg": "./slugify.js",
+  "jsdelivr": "./slugify.js",
   "files": [
     "LICENSE",
     "README.md",
     "slugify.d.ts",
+    "slugify.cjs.js",
+    "slugify.mjs",
     "slugify.js"
   ],
   "types": "slugify.d.ts",
   "scripts": {
-    "build": "node bin/build",
+    "build": "node bin/build && npx rollup -c",
     "test:ci": "npx mocha --recursive",
     "test:cov": "npx nyc --reporter=lcov --reporter=text-summary mocha -- --recursive",
     "test": "npm run build && npm run test:ci"

rollup.config.js

@@ -0,0 +1,19 @@
+import pkg from './package.json';
+import json from '@rollup/plugin-json';
+
+export default [
+  {
+   input: 'src/slugify.js',
+   output: [
+      { file: pkg.main, format: 'cjs', exports: 'auto' },
+      { file: pkg.module, format: 'esm', exports: 'auto' },
+      { file: pkg.unpkg, format: 'umd', exports: 'auto', name: 'slugify' }
+   ],
+   plugins: [
+     json({
+       compact: true,
+       namedExports: false
+     })
+   ]
+ }
+];