sveltejs/kit

`manualChunks` is not working on `2.17.2`

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#13,496 建立於 2025年2月23日

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 (1 留言) (2 反應) (0 負責人)JavaScript (17,446 star) (1,719 fork)batch import
bughelp wanted

描述

Describe the bug

Recently I updated @sveltejs/kit from 2.16.1 to 2.17.2 on a website that used manualChunks to reduce the number of generated chunks and group code by concern.

The result is the following build:

Image

Note that named chunks are on the server and hashed chunks on the client.

Reproduction

Run pnpm build and see the generated client chunks on .svelte-kit/output/client/_app/immutable/chunks

https://stackblitz.com/edit/sveltejs-kit-template-default-gbsyrknf?description=The%20default%20SvelteKit%20template,%20generated%20with%20create-svelte&file=package.json,vite.config.js&title=SvelteKit%20Default%20Template

Logs

System Info

Does not matter

Severity

annoyance

Additional Information

No response

貢獻者指南

技術棧
javascriptsvelte
領域
frontendbuild system
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
SvelteKit basicsVite config understanding
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Investigate the `vite.config.js` file in the provided reproduction. The issue is that `manualChunks` defined in the Vite config are not applied to client chunks; instead, named chunks end up on the server. Compare the behavior between SvelteKit versions 2.16.1 and 2.17.2. Look for recent commits or changes in SvelteKit's build process that may have affected chunking logic. Check the output in `.svelte kit/output/client/ app/immutable/chunks` to confirm the lack of manual chunk grouping.