fix(bundle): fix the broken bundles

change the build step to stop compilation for newer features except modules

.babelrc

@@ -1,10 +1,3 @@
 {
-  "env": {
-    "production": {
-      "presets": ["@babel/preset-env"]
-    },
-    "test": {
-      "plugins": ["@babel/plugin-transform-modules-commonjs"]
-    }
-  }
+  "plugins": ["@babel/plugin-transform-modules-commonjs"]
 }

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "prebuild": "rimraf dist",
     "build": "NODE_ENV=production npm-run-all build:*",
-    "build:main": "babel src --out-dir dist --ignore src/*.test.js",
+    "build:main": "copyfiles -f src/* dist -e src/*.test.js",
+    "build:min": "terser src/index.js src/poll.js -m -c -o dist/poll.min.js",
     "build:umd": "webpack --output-filename poll.umd.js -d",
     "build:umd.min": "webpack --output-filename poll.umd.min.js -p",
     "commit": "git cz",
@@ -32,17 +33,16 @@
     "delay"
   ],
   "files": [
-    "dist",
+    "dist/*.js",
     "README.md",
     "example"
   ],
   "homepage": "https://github.com/alivenotions/simple-poll#readme",
   "devDependencies": {
-    "@babel/cli": "7.1.5",
     "@babel/plugin-transform-modules-commonjs": "7.7.5",
-    "@babel/preset-env": "7.1.5",
     "babel-loader": "8.0.4",
     "commitizen": "3.0.5",
+    "copyfiles": "2.1.1",
     "cz-conventional-changelog": "2.1.0",
     "jest": "24.9.0",
     "node-fetch": "2.2.0",
@@ -51,6 +51,8 @@
     "rimraf": "2.6.2",
     "semantic-release": "^15.11.0",
     "sinon": "7.1.1",
+    "terser": "4.4.2",
+    "terser-webpack-plugin": "2.2.3",
     "travis-deploy-once": "^5.0.9",
     "webpack": "4.25.1",
     "webpack-cli": "3.1.2"

webpack.config.babel.js

@@ -1,4 +1,5 @@
 import { join } from 'path'
+import TerserPlugin from 'terser-webpack-plugin'
 
 const include = join(__dirname, 'src')
 
@@ -9,13 +10,20 @@ export default {
     libraryTarget: 'umd',
     library: 'simplePoll',
   },
+  optimization: {
+    minimize: true,
+    minimizer: [new TerserPlugin()],
+  },
   devtool: 'source-map',
   module: {
     rules: [
       {
         test: /\.js$/,
         use: {
           loader: 'babel-loader',
+          options: {
+            plugins: ['@babel/plugin-transform-modules-commonjs'],
+          },
         }
       }
     ]