[breaking] Don't import styles by default

README.md

@@ -78,14 +78,10 @@ Check the [sample directory](https://github.com/wojtekmaj/react-calendar/tree/ma
 
 ### Custom styling
 
-If you don't want to use default React-Calendar styling to build upon it, you can import React-Calendar by using:
+If you want to use default React-Calendar styling to build upon it, you can import React-Calendar's styles by using:
 
 ```js
-// using ES6 modules
-import Calendar from 'react-calendar/dist/esm/entry.nostyle';
-
-// using CommonJS modules
-import Calendar from 'react-calendar/dist/umd/entry.nostyle';
+import 'react-calendar/dist/Calendar.css';
 ```
 
 instead.

copy-styles.js

@@ -1,17 +1,9 @@
 const fs = require('fs');
 
-fs.copyFile('src/Calendar.less', 'dist/esm/Calendar.less', (error) => {
+fs.copyFile('src/Calendar.less', 'dist/Calendar.less', (error) => {
   if (error) {
     throw error;
   }
   // eslint-disable-next-line no-console
-  console.log('Calendar.less copied successfully to ESM build.');
-});
-
-fs.copyFile('src/Calendar.less', 'dist/umd/Calendar.less', (error) => {
-  if (error) {
-    throw error;
-  }
-  // eslint-disable-next-line no-console
-  console.log('Calendar.less copied successfully to UMD build.');
+  console.log('Calendar.less copied successfully.');
 });

package.json

@@ -2,18 +2,16 @@
   "name": "react-calendar",
   "version": "3.0.0-beta.4",
   "description": "Ultimate calendar for your React app.",
-  "main": "dist/umd/entry.js",
-  "module": "dist/esm/entry.js",
-  "source": "src/entry.js",
+  "main": "dist/umd/index.js",
+  "module": "dist/esm/index.js",
+  "source": "src/index.js",
   "sideEffects": false,
   "scripts": {
     "build": "yarn build-js-all && yarn copy-styles && yarn build-styles",
     "build-js-all": "yarn build-js-esm && yarn build-js-umd",
     "build-js-esm": "cross-env BABEL_ENV=production-esm babel src -d dist/esm --ignore **/*.spec.js,**/*.spec.jsx",
     "build-js-umd": "cross-env BABEL_ENV=production-umd babel src -d dist/umd --ignore **/*.spec.js,**/*.spec.jsx",
-    "build-styles": "yarn build-styles-esm && yarn build-styles-umd",
-    "build-styles-esm": "lessc ./dist/esm/Calendar.less ./dist/esm/Calendar.css",
-    "build-styles-umd": "lessc ./dist/umd/Calendar.less ./dist/umd/Calendar.css",
+    "build-styles": "lessc ./dist/Calendar.less ./dist/Calendar.css",
     "clean": "rimraf dist",
     "copy-styles": "node ./copy-styles.js",
     "jest": "jest",
@@ -28,8 +26,7 @@
     ],
     "collectCoverageFrom": [
       "**/src/**.{js,jsx}",
-      "!**/src/entry.js",
-      "!**/src/entry.nostyle.js"
+      "!**/src/index.js"
     ]
   },
   "keywords": [