After update from 0.4.0 to 0.5.0: no-unused-vars returns TypeError: Cannot use 'in' operator to search for 'type' in undefined

[TimGuendel]

Environment

• Operating System: Darwin
• Node Version: v20.14.0
• Nuxt Version: 3.12.4
• CLI Version: 3.12.0
• Nitro Version: 2.9.7
• Package Manager: yarn@4.3.0
• Builder: -
• User Config: telemetry, experimental, components, nitro, imports, vite, css, devtools, debug, modules, pinia, postcss, cookieControl, runtimeConfig, compatibilityDate
• Runtime Modules: @vueuse/nuxt@10.11.0, @pinia/nuxt@0.5.2, @pinia-plugin-persistedstate/nuxt@1.2.1, nuxt-jsonld@2.0.8, @nuxt/image@1.7.0, @zadigetvoltaire/nuxt-gtm@0.0.13, @dargmuesli/nuxt-cookie-control@8.4.6, @nuxt/test-utils/module@3.13.1, @nuxt/eslint@0.5.0, @vee-validate/nuxt@4.13.2

Package

@nuxt/eslint

Reproduction

N/A

Describe the bug

After updating from 0.4.0 to 0.5.0: no-unused-vars returns

TypeError: Cannot use 'in' operator to search for 'type' in undefined.

Line 133 is always the first line after <script setup lang="ts">

Additional context

No response

Logs

No response

[antfu]

We temporarily closed this due to the lack of enough information. We could not identify whether it was a bug or a userland misconfiguration with the given info.
Please provide a minimal reproduction to reopen the issue.
Thanks.

Why reproduction is required

[zigcccc]

I'm seeing this as well:

It's not happening in all files, just some.

TS version: ~5.3.3
typescript-eslint: ^8.2.0
eslint-plugin-unused-imports: ^4.1.3

[TimGuendel]

I too am stil getting this error. This is the whole message:

[info] Using yup with vee-validate
[success] Types generated in .nuxt

Oops! Something went wrong! :(

ESLint: [9](https://github.com/ecommercedb/frontend-web-2/actions/runs/10628890600/job/29464609458?pr=610#step:4:10).9.1

TypeError: Cannot use 'in' operator to search for 'type' in undefined
Occurred while linting /home/runner/work/frontend-web-2/frontend-web-2/components/charts/ChartContainer.vue:[13](https://github.com/ecommercedb/frontend-web-2/actions/runs/10628890600/job/29464609458?pr=610#step:4:14)3
Rule: "@typescript-eslint/no-unused-vars"
    at UnusedVarsVisitor.markVariableAsUsed (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@nuxt/eslint-config/node_modules/@typescript-eslint/eslint-plugin/dist/util/collectUnusedVariables.js:92:22)
    at UnusedVarsVisitor.TSMappedType (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@nuxt/eslint-config/node_modules/@typescript-eslint/eslint-plugin/dist/util/collectUnusedVariables.js:235:[14](https://github.com/ecommercedb/frontend-web-2/actions/runs/10628890600/job/29464609458?pr=610#step:4:15))
    at UnusedVarsVisitor.visit (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:59:21)
    at UnusedVarsVisitor.visitChildren (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:46:22)
    at UnusedVarsVisitor.visit (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:64:14)
    at UnusedVarsVisitor.visitChildren (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:46:22)
    at UnusedVarsVisitor.visit (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:64:14)
    at UnusedVarsVisitor.visitChildren (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:46:[22](https://github.com/ecommercedb/frontend-web-2/actions/runs/10628890600/job/29464609458?pr=610#step:4:23))
    at UnusedVarsVisitor.visit (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:64:14)
    at UnusedVarsVisitor.visitChildren (/home/runner/work/frontend-web-2/frontend-web-2/node_modules/@typescript-eslint/scope-manager/dist/referencer/VisitorBase.js:41:30)
Error: Process completed with exit code 2.

[TimGuendel]

If it helps, this is the same error: typescript-eslint/typescript-eslint#9719
I am still getting it when updating from "@nuxt/eslint": "^0.4.0" to "@nuxt/eslint": "^0.5.6"

[hugotiburtino]

Same here

Reproduction steps:

1. Clone serlo/api.serlo.org, go to the branch of this PR and run yarn
2. Add "@typescript-eslint/no-duplicate-enum-values": "off", to .eslintrc.json (to avoid another very strange error)
3. Run yarn list:eslint

[TimGuendel]

We temporarily closed this due to the lack of enough information. We could not identify whether it was a bug or a userland misconfiguration with the given info. Please provide a minimal reproduction to reopen the issue. Thanks.

Why reproduction is required

So can this be reopened @antfu ? 🤔

[Marcin-XStudio]

Any updates on this? I"m getting the same error

[deim0707]

It's still relevant today.

[antfu]

This seems to be an upstream issue with ts-eslint, yet there doesn't seem to be a valid minimal reproduction here or even in typescript-eslint/typescript-eslint#9719

If you do find a minimal reproduction, please open a new issue.

[nwparker]

Try updating your @typescript-eslint/* dependencies, this helped for me

[vaynevayne]

Try updating your @typescript-eslint/* dependencies, this helped for me

newest is 8.14.0, issue is still exist

[TimGuendel]

Same for me - just updated from 0.4.0 to 0.6.1.

[TimGuendel]

@vaynevayne @deim0707 I think I found the culprit:

    languageOptions: {
        parserOptions: {
            // parser: '@typescript-eslint/parser',
        },
    },

When commenting out the parser line, the error disappears. I don't know why we had this in the config in the first place. If it helps... 👀

[pranavmappoli]

Any update on the issue ?