vercel/ncc

Regression: dynamic runtime `require` works in 0.38.1 but breaks in 0.38.2

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#1,312 创建于 2026年3月16日

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 (2 评论) (0 反应) (0 负责人)JavaScript (8,841 star) (273 fork)batch import
help wanted

描述

0.38.1

I have the following source code:

https://github.com/CatChen/eslint-suggestion-action/blob/930479a34a06bfa384291cc877f9d1ce21533ae1/src/getESLint.ts#L16-L19

The dynamic require is compiled into the following code:

https://github.com/CatChen/eslint-suggestion-action/blob/930479a34a06bfa384291cc877f9d1ce21533ae1/bundle/index.js#L37587

0.38.2

The same code is compiled into the following code since 0.38.2:

https://github.com/CatChen/eslint-suggestion-action/blob/bc0de7fa625de9daf56cca84b6084f4d6bcbaca4/bundle/index.js#L37702

Workaround

My current workaround is to use dynamic import inside a new Function() (because dynamic import isn't supported either). I have to change to code into this:

https://github.com/CatChen/eslint-suggestion-action/blob/927208b2e684b1a7c721f4a0e70d4f4e8c11c228/src/getESLint.ts#L15-L26

贡献者指南

技术栈
nodejsjavascripttypescript
领域
toolingbuild systemdeveloper experience
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
needs investigation
前置要求
basic Node.js module systemfamiliarity with ncc
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
25
研究方向
Examine the changes between ncc 0.38.1 and 0.38.2, focusing on the bundling logic for dynamic require statements. Look at the generated code differences and identify the commit that introduced the regression. Consider if the issue is related to changes in how require is transformed or if it's a broader problem with dynamic imports. Check the repository's issue tracker for related discussions or pull requests.
Regression: dynamic runtime `require` works in 0.38.1 but breaks in 0.38.2 · vercel/ncc#1312 | Good First Issue