Spread operator slow with `application` builder
- 主要語言
- TypeScript
- 星號
- 27k
- 分支
- 11.8k
- 平均合併
- 14 小時 23 分鐘
- 30 天內合併 PR
- 162
描述
### Which @angular/* package(s) are the source of the bug?
compiler
### Is this a regression?
No
### Description
Hello,
I noticed that the spread operator is significantly slower (sometimes more than 2x slower) when using vite instead of webpack.
This doubles the loading time of some of our components.
In my [minimal reproduction](https://github.com/jopelle1/repro-angular-vite), I get an average of 10ms with webpack and 35ms with vite, with both firefox and chrome.
Is this indeed an issue with angular and is there any way to fix it?
Thank you
### Please provide a link to a minimal reproduction of the bug
https://github.com/jopelle1/repro-angular-vite
### Please provide the environment you discovered this bug in (run `ng version`)
```true
Angular CLI: 17.3.11
Node: 18.20.4
Package Manager: npm 10.8.2
OS: linux x64
Angular: 17.3.12
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1703.11
@angular-devkit/build-angular 17.3.11
@angular-devkit/core 17.3.11
@angular-devkit/schematics 17.3.11
@angular/cli 17.3.11
@schematics/angular 17.3.11
rxjs 7.8.1
typescript 5.4.5
zone.js 0.14.10
```
### Anything else?
_No response_
貢獻指南
研究方向
從連結的最小重現 jopelle1/repro-angular-vite 開始,比較使用 Vite 和 webpack 的 application builder 下 spread operator 的執行時間。追蹤涉及的 Angular compiler 和 application-builder 路徑,然後驗證所回報的效能差距是否已解決,或是否已獲得明確界定。
由索引模型根據 Issue 內容生成。
評估
- 技術堆疊
- angular, typescript, vite
- 領域
- build-system, performance
- Issue 類型
- 缺陷
- 難度
- 4/5
- 預估耗時
- 3-5 天
- 活躍度
- 停滯
- 描述清晰度
- 需要釐清
- 新手友好度
- 30/100