dd714796d7
## What? We recently implemented an optimized resolving method for `app` in Turbopack, this ports some of the main changes in that resolving logic to optimize `next-app-loader` which during compilation resolves the tree structure that we use to render in `app-render.tsx`. Here's the results for a page that is nested a few levels deep on vercel.com using App Router. These results only cover `next-app-loader`, not any modules compiled below it. ### Before <img width="671" alt="CleanShot 2023-06-03 at 22 36 26@2x" src="https://github.com/vercel/next.js/assets/6324199/0edeb060-2460-4a7d-95a7-1c22ea26a065"> ### After <img width="673" alt="CleanShot 2023-06-03 at 22 55 10@2x" src="https://github.com/vercel/next.js/assets/6324199/f40964fc-b169-4d95-8711-73cbff3ec76a"> ## Raw numbers <table> <tr> <td>Before</td> <td>After</td> <td>Delta</td> <td>Delta (percent)</td> </tr> <tr> <td>1.620 ms</td> <td>76.39 ms</td> <td>-1.543.61 ms</td> <td>-95.2%</td> </tr> </table> ## How? Changed the resolving logic to use `fileExists`, looping over the provided pageExtensions. For Turbopack we have a process that does only one pass for generating all trees. That also only reads directories instead of checking individual files, which is even better (<5ms for generating all possible trees) but this PR is a quick win that has a big impact already without refactoring the entire entries generation in webpack. |
||
|---|---|---|
| .. | ||
| compat | ||
| font | ||
| image-types | ||
| legacy | ||
| navigation-types/compat | ||
| src | ||
| types | ||
| amp.d.ts | ||
| amp.js | ||
| app.d.ts | ||
| app.js | ||
| babel.d.ts | ||
| babel.js | ||
| cache.d.ts | ||
| cache.js | ||
| client.d.ts | ||
| client.js | ||
| config.d.ts | ||
| config.js | ||
| constants.d.ts | ||
| constants.js | ||
| document.d.ts | ||
| document.js | ||
| dynamic.d.ts | ||
| dynamic.js | ||
| error.d.ts | ||
| error.js | ||
| head.d.ts | ||
| head.js | ||
| headers.d.ts | ||
| headers.js | ||
| image.d.ts | ||
| image.js | ||
| index.d.ts | ||
| jest.d.ts | ||
| jest.js | ||
| license.md | ||
| link.d.ts | ||
| link.js | ||
| navigation.d.ts | ||
| navigation.js | ||
| package.json | ||
| README.md | ||
| router.d.ts | ||
| router.js | ||
| script.d.ts | ||
| script.js | ||
| server.d.ts | ||
| server.js | ||
| taskfile-ncc.js | ||
| taskfile-swc.js | ||
| taskfile-watch.js | ||
| taskfile.js | ||
| tsconfig.json | ||
| web-vitals.d.ts | ||
| web-vitals.js | ||
Next.js
Getting Started
Visit https://nextjs.org/learn to get started with Next.js.
Documentation
Visit https://nextjs.org/docs to view the full documentation.
Who is using Next.js?
Next.js is used by the world's leading companies. Check out the Next.js Showcase to learn more.
Community
The Next.js community can be found on GitHub Discussions, where you can ask questions, voice ideas, and share your projects.
To chat with other community members you can join the Next.js Discord.
Our Code of Conduct applies to all Next.js community channels.
Contributing
Please see our contributing.md.
Good First Issues
We have a list of good first issues that contain bugs that have a relatively limited scope. This is a great place to get started, gain experience, and get familiar with our contribution process.
Authors
- Tim Neutkens (@timneutkens)
- Naoyuki Kanezawa (@nkzawa)
- Guillermo Rauch (@rauchg)
- Arunoda Susiripala (@arunoda)
- Tony Kovanen (@tonykovanen)
- Dan Zajdband (@impronunciable)
Security
If you believe you have found a security vulnerability in Next.js, we encourage you to responsibly disclose this and not open a public issue. We will investigate all legitimate reports. Email security@vercel.com to disclose any security vulnerabilities.