Next.js 16+ 和 Turbopack — 增量打包、文件系统缓存、开发速度,以及何时使用 Turbopack 与 webpack。
Scanned 9/4/2026
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---
name: nextjs-turbopack
description: Next.js 16+ 和 Turbopack — 增量打包、文件系统缓存、开发速度,以及何时使用 Turbopack 与 webpack。
origin: ECC
---
# Next.js 与 Turbopack
Next.js 16+ 在本地开发中默认使用 Turbopack:这是一个用 Rust 编写的增量捆绑器,能显著加快开发启动和热更新的速度。
## 何时使用
* **Turbopack (默认开发模式)**:用于日常开发。冷启动和热模块替换速度更快,尤其是在大型应用中。
* **Webpack (旧版开发模式)**:仅当遇到 Turbopack 错误或依赖仅在开发中可用的 webpack 插件时使用。可通过 `--webpack`(或 `--no-turbopack`,具体取决于你的 Next.js 版本;请查阅你所用版本的文档)来禁用。
* **生产环境**:生产构建行为 (`next build`) 可能使用 Turbopack 或 webpack,这取决于 Next.js 版本;请查阅你所用版本的官方 Next.js 文档。
适用场景:开发或调试 Next.js 16+ 应用,诊断开发启动或热模块替换速度慢的问题,或优化生产环境捆绑包。
## 工作原理
* **Turbopack**:用于 Next.js 开发的增量捆绑器。利用文件系统缓存,因此重启速度要快得多(例如,在大型项目中快 5–14 倍)。
* **开发环境默认启用**:从 Next.js 16 开始,`next dev` 默认使用 Turbopack,除非被禁用。
* **文件系统缓存**:重启时会复用之前的工作成果;缓存通常位于 `.next` 下;基本使用无需额外配置。
* **捆绑包分析器 (Next.js 16.1+)**:实验性的捆绑包分析器,用于检查输出并发现重型依赖;可通过配置或实验性标志启用(请查阅你所用版本的 Next.js 文档)。
## 示例
### 命令
```bash
next dev
next build
next start
```
### 使用
运行 `next dev` 以使用 Turbopack 进行本地开发。使用捆绑包分析器(参见 Next.js 文档)来优化代码分割并剔除大型依赖。尽可能优先使用 App Router 和服务器组件。
## 最佳实践
* 保持使用较新的 Next.js 16.x 版本,以获得稳定的 Turbopack 和缓存行为。
* 如果开发速度慢,请确保你正在使用 Turbopack(默认),并且缓存没有被不必要地清除。
* 对于生产环境捆绑包大小问题,请使用你所用版本的官方 Next.js 捆绑包分析工具。
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