diff --git a/README.md b/README.md
index 0ae1b89..da9f450 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ This lib allows you to build and write an Excel file dynamically, it does **not*
 ### Comparison to similar libraries
 
 Excel-buider-vanilla is at the minimum 6x times smaller than the most popular libraries (we used `Bundlephobia` to compare), excel-builder-vanilla is 22Kb gzip while [XLSX](https://bundlephobia.com/package/xlsx) is 136Kb and [ExcelJS](https://bundlephobia.com/package/exceljs) is 251Kb gzip. The reason as to why it's much smaller is simple and relates to 2 major differences: 
-- excel-builder-vanilla is ESM and all other libraries are CJS only (CommonJS) increasing their download size
+- excel-builder-vanilla is ESM-Only and all other libraries are only offering CJS (CommonJS) increasing their download/install size
 - excel-builder-vanilla only offers Excel export (writing) but without any reading capabilities
 
 ## Live Demo
@@ -38,7 +38,7 @@ You can also take a look at the "[Used by](#used-by)" section below to see real
 [MIT License](https://github.com/ghiscoding/excel-builder-vanilla/blob/main/LICENSE.md)
 
 ## Project History
-Excel-Builder-Vanilla is a fork of the popular [excel-builder.js](https://github.com/stephenliberty/excel-builder.js) project (thanks to @stephenliberty for this great library). The main goal of creating this fork was to modernize the project by removing old dependencies that are no longer necessary and also replace `JSZip` by `fflate` which provides an ESM build and is indirectly giving us better Tree Shaking. The other goal was also to provide an ESM build to eventually get away from CommonJS (CJS bundle is still offered but we strongly suggest that you migrate to the ESM approach)
+Excel-Builder-Vanilla is a fork of the popular [excel-builder.js](https://github.com/stephenliberty/excel-builder.js) project (thanks to @stephenliberty for this great library). The main goal of creating this fork was to modernize the project by removing old dependencies that are no longer necessary and also replace `JSZip` by `fflate` which provides an ESM build and is indirectly giving us better Tree Shaking. The other goal was also to provide an ESM build
 
 The modernization steps:
 - migrate to TypeScript (which is giving us TS Types `d.ts`)
@@ -64,16 +64,12 @@ npm install excel-builder-vanilla
 
 The project offers 3 different build types, choose the best one depending on your use case
 1. **ESM**: to `import from` (_**preferred**_)
-2. **CJS**: CommonJS to support old NodeJS `require()` - will probably be dropped in the future
-3. **IIFE**: standalone script which provides `ExcelBuilder` on the `window` object
+2. **IIFE**: standalone script which provides `ExcelBuilder` on the `window` object
 
 ```ts
 // ESM (preferred) - npm install
 import { createWorksheet } from 'excel-builder-vanilla';
 
-// CJS - npm install
-const { createWorksheet } = require('excel-builder-vanilla');
-
 // IIFE - CDN
 <script src="https://cdn.jsdelivr.net/npm/excel-builder-vanilla@3.0.1/dist/excel-builder.iife.js"></script>
 <script>
@@ -92,7 +88,7 @@ Please note that since we use `fflate` (which creates and compresses the Excel f
 
 ### Used by
 
-This fork was created mostly to support Tree Shaking (ESM), to get away from CJS, to provide TS Types and finally to update all project dependencies. It is used by a few other Open Source libraries that I also maintain and require Excel export:
+This fork was created mostly to support Tree Shaking (ESM), to provide TS Types and finally to update all project dependencies. It is used by a few other Open Source libraries that I also maintain and require Excel export:
 
 - [Angular-Slickgrid](https://github.com/ghiscoding/Angular-Slickgrid)
 - [Aurelia-Slickgrid](https://github.com/ghiscoding/aurelia-slickgrid)
@@ -137,7 +133,7 @@ Before submitting a PR (pull request), please make sure that you followed these
 | Package Name | NPM downloads | Size (gzip) | Changes | Description |
 | -------------| ------- | ----------- | ------- | ----------- |
 | [excel-builder-vanilla](https://github.com/ghiscoding/excel-builder-vanilla/tree/main/packages/excel-builder-vanilla) | [![NPM downloads](https://img.shields.io/npm/dm/excel-builder-vanilla)](https://npmjs.org/package/excel-builder-vanilla) | [![npm bundle size](https://img.shields.io/bundlephobia/minzip/excel-builder-vanilla?color=success&label=gzip)](https://bundlephobia.com/result?p=excel-builder-vanilla) | [changelog](https://github.com/ghiscoding/excel-builder-vanilla/blob/main/packages/excel-builder-vanilla/CHANGELOG.md) | `excel-builder-vanilla` library package |
-| [excel-builder-vanilla-types](https://github.com/ghiscoding/excel-builder/tree/main/packages/excel-builder-vanilla-types) | [![NPM downloads](https://img.shields.io/npm/dm/@excel-builder-vanilla/types)](https://npmjs.org/package/@excel-builder-vanilla/types) | [![npm bundle size](https://img.shields.io/bundlephobia/minzip/@excel-builder-vanilla/types?color=success&label=gzip)](https://bundlephobia.com/result?p=@excel-builder-vanilla/types) | [changelog](https://github.com/ghiscoding/excel-builder-vanilla/blob/main/packages/excel-builder-vanilla-types/CHANGELOG.md) | `excel-builder-vanilla` dts types only package.
+| [[excel-builder-vanilla-types](https://github.com/ghiscoding/excel-builder-vanilla/tree/main/packages/excel-builder-vanilla-types) | [![NPM downloads](https://img.shields.io/npm/dm/@excel-builder-vanilla/types)](https://npmjs.org/package/@excel-builder-vanilla/types) | [![npm bundle size](https://img.shields.io/bundlephobia/minzip/@excel-builder-vanilla/types?color=success&label=gzip)](https://bundlephobia.com/result?p=@excel-builder-vanilla/types) | [changelog](https://github.com/ghiscoding/excel-builder-vanilla/blob/main/packages/excel-builder-vanilla-types/CHANGELOG.md) | `excel-builder-vanilla` dts types only package.
 
 ## Sponsors
 
diff --git a/package.json b/package.json
index d8c7ad2..642dc8c 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,6 @@
     "@types/node": "^22.14.1",
     "@vitest/coverage-v8": "^3.1.1",
     "conventional-changelog-conventionalcommits": "^8.0.0",
-    "cross-env": "^7.0.3",
     "happy-dom": "^17.4.4",
     "pnpm": "^9.10.0",
     "rimraf": "^6.0.1",
diff --git a/packages/excel-builder-vanilla-types/dist/index.mjs b/packages/excel-builder-vanilla-types/dist/index.js
similarity index 100%
rename from packages/excel-builder-vanilla-types/dist/index.mjs
rename to packages/excel-builder-vanilla-types/dist/index.js
diff --git a/packages/excel-builder-vanilla-types/package.json b/packages/excel-builder-vanilla-types/package.json
index ec3d0a6..145b5be 100644
--- a/packages/excel-builder-vanilla-types/package.json
+++ b/packages/excel-builder-vanilla-types/package.json
@@ -22,6 +22,7 @@
     "access": "public"
   },
   "type": "module",
+  "main": "./dist/index.js",
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
diff --git a/packages/excel-builder-vanilla/copy-types.mjs b/packages/excel-builder-vanilla/copy-types.mjs
index e3a3342..9155577 100644
--- a/packages/excel-builder-vanilla/copy-types.mjs
+++ b/packages/excel-builder-vanilla/copy-types.mjs
@@ -9,6 +9,6 @@ copyfiles([source, destination], { stat: true }, err => {
     console.error(err);
   } else {
     // all good, next step, create JS entry file
-    writeFileSync(`${destination}/dist/index.mjs`, `'use strict';`);
+    writeFileSync(`${destination}/dist/index.js`, `'use strict';`);
   }
 });
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9ee2e60..b86d0b8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -26,9 +26,6 @@ importers:
       conventional-changelog-conventionalcommits:
         specifier: ^8.0.0
         version: 8.0.0
-      cross-env:
-        specifier: ^7.0.3
-        version: 7.0.3
       happy-dom:
         specifier: ^17.4.4
         version: 17.4.4
@@ -1122,11 +1119,6 @@ packages:
       typescript:
         optional: true
 
-  cross-env@7.0.3:
-    resolution: {integrity: sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==}
-    engines: {node: '>=10.14', npm: '>=6', yarn: '>=1'}
-    hasBin: true
-
   cross-spawn@7.0.6:
     resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
     engines: {node: '>= 8'}
@@ -3423,10 +3415,6 @@ snapshots:
     optionalDependencies:
       typescript: 5.8.3
 
-  cross-env@7.0.3:
-    dependencies:
-      cross-spawn: 7.0.6
-
   cross-spawn@7.0.6:
     dependencies:
       path-key: 3.1.1