Webpack Integration

PikaCSS works with Webpack through the unplugin package.

Installation

pnpm

pnpm add -D @pikacss/unplugin-pikacss

yarn

yarn add -D @pikacss/unplugin-pikacss

npm

npm install -D @pikacss/unplugin-pikacss

Setup

1. Configure Webpack

// webpack.config.mjs
import pikacss from '@pikacss/unplugin-pikacss/webpack'

export default {
	plugins: [
		pikacss({
			// options
		})
	]
}

2. Create Config File

Create pika.config.ts in your project root:

// pika.config.ts
/// <reference path="./src/pika.gen.ts" />

import { defineEngineConfig } from '@pikacss/unplugin-pikacss'

export default defineEngineConfig({
	// Your configuration
})

3. Import Virtual Module

In your main entry file:

import 'pika.css'

Plugin Options

pikacss({
	// File scanning configuration
	scan: {
		include: ['**/*.{js,ts,jsx,tsx}'],
		exclude: ['node_modules/**']
	},

	// Config file path
	config: './pika.config.ts',

	// Auto-create config if missing
	autoCreateConfig: true,

	// Function name to detect
	fnName: 'pika',

	// Default output format
	transformedFormat: 'string',

	// Generate pika.gen.ts
	tsCodegen: true,

	// Generate pika.gen.css
	cssCodegen: true
})

Complete Example

import path from 'node:path'
import { fileURLToPath } from 'node:url'
import pikacss from '@pikacss/unplugin-pikacss/webpack'
// webpack.config.mjs
import HtmlWebpackPlugin from 'html-webpack-plugin'

const __dirname = path.dirname(fileURLToPath(import.meta.url))

export default {
	mode: 'development',
	entry: './src/index.tsx',
	output: {
		path: path.resolve(__dirname, 'dist'),
		filename: 'bundle.js'
	},
	module: {
		rules: [
			{
				test: /\.tsx?$/,
				use: 'ts-loader',
				exclude: /node_modules/
			},
			{
				test: /\.css$/,
				use: ['style-loader', 'css-loader']
			}
		]
	},
	resolve: {
		extensions: ['.tsx', '.ts', '.js']
	},
	plugins: [
		pikacss(),
		new HtmlWebpackPlugin({
			template: './index.html'
		})
	],
	devServer: {
		static: './dist',
		hot: true
	}
}

React Example

import { createRoot } from 'react-dom/client'
// src/index.tsx
import 'pika.css'

function App() {
	return (
		<div className={pika({
			display: 'flex',
			alignItems: 'center',
			justifyContent: 'center',
			minHeight: '100vh'
		})}
		>
			<h1 className={pika({ color: 'blue', fontSize: '2rem' })}>
				Hello PikaCSS with Webpack!
			</h1>
		</div>
	)
}

const root = createRoot(document.getElementById('root')!)
root.render(<App />)

TypeScript Support

Add the generated types to your tsconfig.json:

{
	"compilerOptions": {
		"module": "ESNext",
		"moduleResolution": "bundler",
		"jsx": "react-jsx"
	},
	"include": ["src/**/*", "pika.gen.ts"]
}