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Js Library Boilerplate

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Updated: 21 May 2025
234 Stars

Javascript Starter Boilerplate - Webpack 4, Babel 7, UMD, Hot Reloading, and more

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Categories

React

Overview

This library boilerplate is a more robust alternative for creating JavaScript libraries. It offers a range of features including Webpack 5, Babel 7, hot reloading, CSS autoprefixer, SASS/SCSS support, UMD exports, and support for Vanilla JS or React libraries based on CRA v5.0.0. It also includes Jest unit testing, customizable file headers, a configurable postinstall message, and daily dependabot dependency updates. This boilerplate aims to provide developers with a comprehensive solution for building and deploying JavaScript libraries.

Features

  • Webpack 5: Utilizes the latest version of Webpack for efficient module bundling.
  • Babel 7: Includes Babel 7 for transpiling JavaScript code to ensure compatibility across different environments.
  • Hot Reloading: Enables hot reloading during development through the npm start command.
  • CSS Autoprefixer: Automatically adds vendor prefixes to CSS properties for better browser support.
  • SASS/SCSS Support: Allows the use of SASS/SCSS preprocessors for more advanced styling capabilities.
  • UMD Exports: Generates Universal Module Definition (UMD) exports, making the library compatible with various environments.
  • Based on CRA v5.0.0: Built on top of Create React App (CRA) version 5.0.0, providing a solid foundation for developing Vanilla JS or React libraries.
  • Jest Unit Testing: Includes Jest for easy and efficient unit testing of library code.
  • Customizable File Headers: Allows customization of file headers for built files, providing important information about the library.
  • Configurable Postinstall Message: Provides the ability to display a customized message during the package installation process.
  • Daily Dependabot Dependency Updates: Automatically updates dependencies on a daily basis, ensuring the library stays up-to-date and secure.

Installation

To install and use this library boilerplate, follow the steps below:

  1. Clone the repository:
git clone [repository url]
  1. Navigate to the cloned directory:
cd [directory name]
  1. Install dependencies:
npm install
  1. Customize the necessary files:
  • Edit the LICENSE file with your desired license information.
  • Modify the information in the package.json file to reflect your library’s details. These details will be used to generate the headers for your built files.
  • Update the export name for your library in the ./config/webpack.config.js file by editing the library property under output.
  • If you want to display a custom message during package installation, edit the ./bin/postinstall file.
  1. Build and deploy your library:
npm publish

Your library can now be included by users using npm or self-hosting/CDN.

Summary

This library boilerplate provides developers with a comprehensive solution for building and deploying JavaScript libraries. It includes essential features such as Webpack, Babel, hot reloading, and support for SASS/SCSS. Additionally, it offers customizable file headers, a configurable postinstall message, and automated dependency updates. With this boilerplate, developers can easily create and maintain JavaScript libraries with ease.