| # Building |
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| You can build Next.js, including all type definitions and packages, with: |
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| ```bash |
| pnpm build |
| ``` |
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|
| > [!TIP] |
| > Next.js uses [taskr](https://www.npmjs.com/package/taskr) to parallelize the build tasks. |
| > The tasks can be found in the [`taskfile.js`](../../packages/next/taskfile.js) file, and each task name refers to the name of the function to execute. |
| > For example, `taskr release` will execute the `release()` function in the `taskfile.js` file. |
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| The build process consists of the three main tasks: |
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| - [Compile the TypeScript sources with SWC](#compile-the-typescript-sources-with-swc) |
| - [Bundle the project with Webpack](#bundle-the-project-with-webpack) |
| - [Generate the type definitions](#generate-the-type-definitions) |
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| ### Compile the TypeScript Sources with SWC |
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| By default, the latest canary of the `next-swc` binaries will be installed and used to compile the TypeScript sources of the project. These sources are meant to be built inside the `packages/next/dist/...` directory. The outputs will include compiled JavaScript files and source maps. |
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| ### Bundle the Project with Webpack |
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| Based on the outputs of the compilation, the project is then bundled with Webpack. The configuration can be found in the [`next-runtime.webpack-config.js`](../../packages/next/next-runtime.webpack-config.js) file. |
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| ### Generate the Type Definitions |
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| The type definitions are generated using the TypeScript [`tsc`](https://www.typescriptlang.org/docs/handbook/compiler-options.html) compiler. You can build them separately with `pnpm types`. The [`tsconfig.build.json`](../../packages/next/tsconfig.build.json) is used which extends the base [`tsconfig.json`](../../packages/next/tsconfig.json) but excludes test files and other unneeded type definitions. |
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| ## Working on Turbopack, WASM, and other Rust code |
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| If you are actively working on Rust code or you need to test out the most recent Rust code that hasn't been published as a canary yet, you can [install Rust](https://www.rust-lang.org/tools/install) and run `pnpm swc-build-native`. |
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| If you want to test out the wasm build locally, you will need to [install wasm-pack](https://rustwasm.github.io/wasm-pack/installer/). Run `pnpm --filter=@next/swc build-wasm --target <wasm_target>` to build and `node ./scripts/setup-wasm.mjs` to copy it into your `node_modules`. Run next with `NODE_OPTIONS='--no-addons'` to force it to use the wasm binary. |
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| If you need to clean the project for any reason, use `pnpm clean`. |
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