unplugin-purge-polyfills

Introduction to unplugin-purge-polyfills

unplugin-purge-polyfills is a compact and efficient plugin aimed at streamlining code by replacing specific package imports with superior native alternatives. The project is part of the unplugin ecosystem which supports numerous bundlers, making it versatile and valuable for developers aiming to optimize their applications.

Key Features

The primary function of unplugin-purge-polyfills is to eliminate the need for external package polyfills and replace them with native JavaScript functions available in modern environments. This approach not only reduces bundle size but also enhances performance by utilizing browser-native capabilities. At build time, it automatically substitutes common packages, including:

• Utility packages like is-number, is-plain-object, and is-travis
• String and array manipulation functions such as split-lines, array.prototype.findindex, and array-map
• Object handling utilities like object.entries and define-properties
• Additional common polyfills for enhancements like has-own, has-proto, and is-array-buffer

The plugin is continuously evolving, ensuring it adapts to new developments and optimizations in the JavaScript ecosystem.

Roadmap and Future Development

The roadmap for unplugin-purge-polyfills includes tighter integration with similar projects such as nolyfill and module-replacements. Additionally, there are plans to implement a publish-on-demand infrastructure, which will further streamline the application of the plugin within published packages.

Usage

Developers can easily incorporate this plugin into their projects. Installation is straightforward using npm:

# npm
npm install --save-dev unplugin-purge-polyfills

Once installed, it can be added to a Rollup configuration:

import { purgePolyfills } from 'unplugin-purge-polyfills'

export default {
  plugins: [
    purgePolyfills.rollup({ /* options */ }),
  ],
}

Configuration Options

The plugin comes with a broad selection of polyfills it will remove by default. However, users have the flexibility to disable specific polyfills or add custom ones using a replacements object:

export default {
  plugins: [
    purgePolyfills.rollup({
      replacements: {
        'is-string': false,  // Disable this polyfill
        'node.extend': { 
          default: '(obj1, obj2) => { ...obj2, ...obj1 }' // Custom implementation 
        }
      }
    }),
  ],
}

This configuration empowers developers to tailor the plugin’s functionality to suit the specific needs of their codebase.

Projects Involving unplugin-purge-polyfills

Some notable projects incorporating or experimenting with unplugin-purge-polyfills include:

• nuxt/cli
• unjs/jiti

These projects highlight the practical application and benefits of utilizing this plugin in modern JavaScript frameworks and environments.

Credits and Development

The development of unplugin-purge-polyfills is supported by insights from projects like module-replacements and esm.sh. The project also draws inspiration from nolyfill.

To contribute or further develop this plugin, developers can clone the repository, enable Corepack, install dependencies with pnpm, and engage with the development process.

License

unplugin-purge-polyfills is developed with love and is released under the MIT License.

This comprehensive introduction outlines the significance and potential of the unplugin-purge-polyfills project, encouraging developers to leverage its capabilities for cleaner, more efficient code.