vuejs/vue-cli

ModuleNotFoundError when using sass @import in combination with css modules

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#2,334 创建于 2018年8月23日

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 (3 评论) (7 反应) (0 负责人)JavaScript (29,754 star) (6,328 fork)batch import
bugcontribution welcomehelp wantedscope: cli-service build

描述

Version

3.0.0-rc.11 - 3.0.5

Reproduction link

https://github.com/dattn/vue-cli-bug-demo

Node and OS info

Node v10.9.0 / Ubuntu 18.04

Steps to reproduce

npm install
npm run build

What is expected?

The scss files should be imported with Sass. The code should build successfully.

What is actually happening?

The relative scss files cannot be found. The build fails with the following error message:

Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleNotFoundError: Module not found: Error: Can't resolve './variables'

With vue-cli v3.0.0-rc.10, the code builds as expected. The problem exists as of version 3.0.0-rc.11. The latest version 3.0.5 also fails.

I think the source of the problem is the following commit: https://github.com/vuejs/vue-cli/commit/4220835

When I add the following props to the vue.config.js, the build works again:

module.exports = {
  css: {
    loaderOptions: {
      css: { importLoaders: 3 }
    }
  }
}

Related issue: #2055

贡献者指南

技术栈
vuecssnodejs
领域
frontendbuild system
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。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Basic Vue CLI knowledgeUnderstanding of webpack CSS loadersFamiliarity with SCSS
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。
50
研究方向
Examine the commit 4220835 that introduced the regression. Test the provided workaround (adding importLoaders: 3 to vue.config.js) and verify it resolves the issue. Investigate why @import fails with CSS modules and whether the default importLoaders value should be changed. Also review the related issue #2055 for additional context.