Rust-native parallel compression plugin for Rspack. Drop-in replacement for compression-webpack-plugin.

Compresses assets in parallel across all CPU cores via Rust + rayon, instead of serially on the Node.js main thread.

npm install compression-rspack-plugin
# or
pnpm add compression-rspack-plugin
# or
yarn add compression-rspack-plugin

Prebuilt binaries are available for macOS (arm64, x64), Linux (x64 glibc, arm64 glibc, x64 musl). The correct binary is installed automatically via platform-specific optional dependencies.

import { CompressionRspackPlugin } from 'compression-rspack-plugin'

export default {
  plugins: [
    new CompressionRspackPlugin({ test: /\.(js|css|html|json|svg)$/ }),
    new CompressionRspackPlugin({ algorithm: 'brotliCompress', test: /\.(js|css|html|json|svg)$/ }),
  ],
}

Same interface as compression-webpack-plugin. Validated via schema-utils.

Tested on a production Rspack build (~1,400 assets, Apple M3 Pro 14-core).

Built-in algorithms (gzip, brotliCompress, deflate, deflateRaw) are handled by flate2 and brotli in Rust via a single napi-rs FFI call. Custom algorithms fall back to Node.js zlib.

pnpm install        # install deps
pnpm build          # native addon + TypeScript
pnpm test           # JS tests (120 tests)
pnpm test:rust      # Rust unit tests
pnpm lint           # biome
pnpm lint:rs        # cargo fmt + clippy
pnpm typecheck      # tsc --noEmit

MIT