Parse error when using `in` nested in a `for` initializer · Microsoft/TypeScript#59236 | Good First Issue

(7 评论) (0 反应) (0 负责人)TypeScript (6,726 fork)batch import

BugDomain: ParserHelp Wanted

仓库指标

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描述

🔎 Search Terms

in for in init syntax error

🕗 Version & Regression Information

This is the behavior in every version I tried

⏯ Playground Link

https://www.typescriptlang.org/play/?ts=5.5.3#code/GYewTgBAFAbghpOEC8EDaAjCBLAdhAYwF0BuEgShKA

💻 Code

for (var a = [b in c];;);

🙁 Actual behavior

It says "',' expected." at the in

🙂 Expected behavior

It should parse it properly

Additional information about the issue

No response

贡献者指南

研究方向: 查看 TypeScript 解析器中 'for' 语句的代码，特别是如何在初始化器中处理 'in'。检查测试用例以了解预期行为。
技术栈: typescript
领域: compilers
议题类型: 缺陷
难度: 2
预计时间: 1-3 小时
活动状态: 活跃
清晰度: 清晰
前置要求: TypeScript
新手友好度: 65