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--- title: turbopackPluginRuntimeStrategy description: Choose how Turbopack runs Node.js evaluation for webpack loaders, Babel, and PostCSS. version: experimental related: links: - app/api-reference/config/next-config-js/turbopack --- The `experimental.turbopackPluginRuntimeStrategy` option chooses whether Turbopack runs Node.js evaluation in child processes or worker threads. ```ts filename="next.config.ts" switcher highlight={5} import type { NextConfig } from 'next' const nextConfig: NextConfig = { experimental: { turbopackPluginRuntimeStrategy: 'workerThreads', }, } export default nextConfig ``` ```js filename="next.config.js" switcher highlight={4} /** @type {import('next').NextConfig} */ const nextConfig = { experimental: { turbopackPluginRuntimeStrategy: 'workerThreads', }, } module.exports = nextConfig ``` This runtime executes Node.js-based tools, including [webpack loaders](/docs/app/api-reference/config/next-config-js/turbopack#configuring-webpack-loaders), Babel, and PostCSS. ## Reference | Value | Default | Description | | ---------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ | | `'childProcesses'` | Yes | Runs Node.js evaluation in a pool of child processes and communicates with them over sockets. | | `'workerThreads'` | No | Runs Node.js evaluation in worker threads within the Next.js process. This can reduce memory and CPU overhead compared with a child process pool. | | `'forceWorkerThreads'` | No | Uses worker threads even when the current Node.js version is affected by the worker-thread teardown issue described below. This can abort the process. | ## Node.js compatibility On Node.js 24.13.1 and newer, a [Node.js worker-thread teardown issue](https://github.com/nodejs/node/issues/65100) can abort the process when a worker exits while a native addon has a live Node-API thread-safe function. When `turbopackPluginRuntimeStrategy` is set to `'workerThreads'` on an affected Node.js version, Next.js prints a warning and falls back to `'childProcesses'`. Set `'forceWorkerThreads'` to bypass the fallback at the risk of aborting the process. ## Version History | Version | Changes | | --------- | ------------------------------------------------------------------------- | | `v16.4.0` | `experimental.turbopackPluginRuntimeStrategy` configuration option added. |