Spread operator slow with `application` builder
- 主要语言
- TypeScript
- 星标
- 27k
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- 平均合并
- 14 小时 23 分钟
- 30 天内合并 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_
贡献指南
调研方向
从链接的最小复现 jopelle1/repro-angular-vite 开始,比较使用 Vite 和 webpack 的 application builder 下 spread operator 的执行时间。追踪涉及的 Angular compiler 和 application-builder 路径,然后验证所报告的性能差距是否已经解决,或是否已得到明确界定。
由索引模型根据 Issue 内容生成。
评估
- 技术栈
- angular, typescript, vite
- 领域
- build-system, performance
- Issue 类型
- 缺陷
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 活跃度
- 停滞
- 描述清晰度
- 需要澄清
- 新手友好度
- 30/100