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

Author: realityking

.gitignore

@@ -1,6 +1,7 @@
 build/
 coverage/
 node_modules/
+src/charMap.json
 .idea
 npm-debug.log
 package-lock.json

.travis.yml

@@ -6,7 +6,6 @@ node_js:
   - 10
   - 8
   - 6
-  - 4
 
 after_script:
   - npm run test:cov

build.js

@@ -1,46 +1,23 @@
-
 var fs = require('fs')
-var charmap = require('./charmap')
-
+var charmap = require('./charmap.json')
 
-exports.sort = function () {
+function sortCharmap () {
   var sorted = charmap.sort(function (a, b) {
     return a.key > b.key ? 1 : a.key < b.key ? -1 : 0
   })
   fs.writeFileSync('charmap.json', JSON.stringify(sorted, null, 2), 'utf8')
 }
 
-exports.duplicates = function () {
-  var cache = {}
-  var duplicates = []
-  charmap.forEach(function (pair) {
-    if (!cache[pair.key]) {
-      cache[pair.key] = pair
-    }
-    else {
-      duplicates.push(pair)
-    }
-  })
-  return {
-    cache: cache,
-    duplicates: duplicates
-  }
-}
-
-exports.replace = function () {
+function replaceCharmap () {
   var obj = charmap.reduce(function (obj, pair) {
     obj[pair.key] = pair.value
     return obj
   }, {})
 
-  var json = JSON.stringify(obj).replace(/'/g, '\\\'')
-
-  var source =
-  fs.readFileSync('index.js', 'utf8')
-    .replace(
-      /var charMap = JSON\.parse\(.*\)/,
-      'var charMap = JSON.parse(\'' + json + '\')'
-    )
+  var json = JSON.stringify(obj)
 
-  fs.writeFileSync('index.js', source, 'utf8')
+  fs.writeFileSync('src/charMap.json', json, 'utf8')
 }
+
+sortCharmap();
+replaceCharmap();

index.cjs.js

@@ -24,21 +24,25 @@
     "eslint-plugin-promise": "^3.7.0",
     "eslint-plugin-standard": "^3.0.1",
     "istanbul": "^0.4.5",
-    "mocha": "^5.1.1"
+    "mocha": "^5.1.1",
+    "rollup": "^0.67.1",
+    "rollup-plugin-json": "^3.1.0"
   },
-  "main": "./index.js",
+  "main": "./index.cjs.js",
   "files": [
     "LICENSE",
     "README.md",
+    "index.cjs.js",
     "index.d.ts",
     "index.js"
   ],
   "types": "index.d.ts",
   "scripts": {
-    "lint": "eslint index.js test.js && echo Lint Passed",
+    "build": "node build.js && rollup -c",
+    "lint": "eslint src/index.js test.js && echo Lint Passed",
     "test": "npm run lint && npm run test:ci && echo Tests Passed",
-    "test:ci": "mocha",
-    "test:cov": "istanbul cover _mocha"
+    "test:ci": "npm run build && mocha",
+    "test:cov": "npm run build && istanbul cover _mocha"
   },
   "engines": {
     "node": ">=4.0.0"

index.js

@@ -0,0 +1,18 @@
+import pkg from './package.json';
+import json from 'rollup-plugin-json';
+
+export default [
+  {
+   input: 'src/index.js',
+   output: [
+      { file: pkg.main, format: 'cjs' },
+      { file: 'index.js', format: 'umd', name: 'slugify' }
+   ],
+   plugins: [
+     json({
+       compact: true,
+       namedExports: false
+     })
+   ]
+ }
+];

package.json

@@ -0,0 +1,32 @@
+import charMap from './charMap.json'
+
+function replace (string, options) {
+  if (typeof string !== 'string') {
+    throw new Error('slugify: string argument expected')
+  }
+
+  options = (typeof options === 'string')
+    ? {replacement: options}
+    : options || {}
+
+  var slug = string.split('')
+    .reduce(function (result, ch) {
+      return result + (charMap[ch] || ch)
+        // allowed
+        .replace(options.remove || /[^\w\s$*_+~.()'"!\-:@]/g, '')
+    }, '')
+    // trim leading/trailing spaces
+    .trim()
+    // convert spaces
+    .replace(/[-\s]+/g, options.replacement || '-')
+
+  return options.lower ? slug.toLowerCase() : slug
+}
+
+replace.extend = function (customMap) {
+  for (var key in customMap) {
+    charMap[key] = customMap[key]
+  }
+}
+
+export default replace