beastcss-webpack-plugin

Beastcss Webpack Plugin

Inline critical CSS and async load the rest.

Installation

npm i -D beastcss-webpack-plugin

or

yarn add -D beastcss-webpack-plugin

Usage

Create a Beastcss plugin instance with the given options.

// webpack.config.js
const BeastcssWebpackPlugin = require('beastcss-webpack-plugin');

module.exports = {
  plugins: [
    new BeastcssWebpackPlugin({
      // optional configuration (see below)
    }),
  ],
};

That's it! Now when you run Webpack, the CSS used by your HTML will be inlined and the imports for your full CSS will be converted to load asynchronously.

Options

external

Type: Boolean

Default true

Process external stylesheets.

internal

Type: Boolean

Default true

Process internal stylesheets.

additionalStylesheets

Type: Array

Default []

Array of Glob for matching other stylesheets to be used while looking for critical CSS.

externalThreshold

Type: Number

Default 0

Completely inline external stylesheets smaller than a given size.

merge

Type: Boolean

Default true

Merged inlined stylesheets into a single <style></style> tag.

pruneSource

Type: Boolean

Default false

Remove inlined rules from the external stylesheet.

preloadExternalStylesheets

Type: Boolean

Default false

Preload external stylesheets.

asyncLoadExternalStylesheets

Type: Boolean

Default true

Async load external stylesheets.

noscriptFallback

Type: Boolean

Default true

Add <noscript> fallback to load external stylesheets.

exclude

Type: Function|Regexp

Exclude matching external stylesheets from processing.

whitelist

Type: String[]|Regexp[]

An array of css selectors to be considered as used rules.

fontFace

Type: Boolean

Default: false

Inline used @font-face rules.

keyframes

Type: Boolean

Default: false

Inline used @keyframes rules.

logLevel

Type: String

Default: 'info'

Set the printed output verbosity. See available levels.

logger

Type: Object

Provide a custom logger interface.

Log Level

Controls the printed output verbosity. Specifies the level the logger should use. A logger will not produce output for any log level beneath the specified level. Available levels and order are:

• trace
• debug
• info
• warn
• error
• silent

Custom Logger Interface

interface Logger {
  info: (msg: string, id?: string) => void;
  warn: (msg: string, id?: string) => void;
  error: (msg: string, id?: string) => void;
  trace: (msg: string, id?: string) => void;
  debug: (msg: string, id?: string) => void;
}