Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

Awesome Lists | Featured Topics | Projects

https://github.com/americanexpress/purgecss-loader

โœจ A Webpack loader to strip unused selectors from your CSS
https://github.com/americanexpress/purgecss-loader

css css-modules one-app optimization purgecss strip-unused-selectors webpack-loader

Last synced: 18 days ago
JSON representation

โœจ A Webpack loader to strip unused selectors from your CSS

Awesome Lists containing this project

README

        

[One App is now InnerSource](https://github.com/americanexpress/one-app/issues/1393)


purgecss-loader - One Amex

[![npm version](https://badge.fury.io/js/%40americanexpress%2Fpurgecss-loader.svg)](https://badge.fury.io/js/%40americanexpress%2Fpurgecss-loader)

> This [Webpack](https://github.com/webpack/webpack) loader uses [purgecss](https://github.com/FullHuman/purgecss)
to strip unused selectors from your CSS.

## ๐Ÿ“– Table of Contents

* [Features](#-features)
* [Usage](#-usage)
* [API](#%EF%B8%8F-api)
* [License](#%EF%B8%8F-license)
* [Code Of Conduct](#%EF%B8%8F-code-of-conduct)
* [Contributing](#-contributing)

## โœจ Features

* Ability to remove CSS modules
* Ability to remove plain CSS declarations
* Reduce bundle size

## ๐Ÿคนโ€ Usage

```
npm install -D @americanexpress/purgecss-loader
```

## ๐ŸŽ›๏ธ API

### Configure as follows:

```js
module.exports = {
entry: {...},
output: {...},
module: {
rules: [
{
test: /\.css$/,
use: [
{
loader: 'css-loader',
options: {
modules: true,
localIdentName: '[name]__[local]___[hash:base64:5]',
},
},
{
loader: '@americanexpress/purgecss-loader',
options: {
paths: [path.join(somePath, 'src/**/*.{js,jsx}')],
safelist: [/:global$/],
},
},
],
},
],
},
}
```

You should use this with the [`css-loader`](https://github.com/webpack-contrib/css-loader)
as seen above. However, it is not required that you use CSS modules. That is in
the example to express this loader's compatibility.

### Options

| Property | Description | Required |
|-----------------|-----------------------------------|----------|
| `paths` | An array of file [glob] patterns | `true` |
| `extractors` | An array of [purgecss extractors] | `false` |
| `fontFace` | `boolean` (default: false) see [options] | `false` |
| `keyframes` | `boolean` (default: false) see [options] | `false` |
| `variables` | `boolean` (default: false) see [options] | `false` |
| `safelist` | `UserDefinedSafelist` see [options]| `false` |
| `blocklist` | `StringRegExpArray` see [options] | `false` |

[glob]: https://github.com/isaacs/node-glob
[purgecss extractors]: https://www.purgecss.com/extractors.html
[options]: https://purgecss.com/configuration.html#options

## ๐Ÿ—๏ธ License

Any contributions made under this project will be governed by the
[Apache License 2.0](./LICENSE.txt).

## ๐Ÿ—ฃ๏ธ Code of Conduct

This project adheres to the [American Express Community Guidelines](./CODE_OF_CONDUCT.md).
By participating, you are expected to honor these guidelines.

## ๐Ÿ† Contributing

We welcome Your interest in the American Express Open Source Community on Github.
Any Contributor to any Open Source Project managed by the American Express Open
Source Community must accept and sign an Agreement indicating agreement to the
terms below. Except for the rights granted in this Agreement to American Express
and to recipients of software distributed by American Express, You reserve all
right, title, and interest, if any, in and to Your Contributions. Please [fill
out the Agreement](https://cla-assistant.io/americanexpress/purgecss-loader).

Please feel free to open pull requests and see [CONTRIBUTING.md](./CONTRIBUTING.md)
for commit formatting details.