@vue/cli-plugin-eslint 4.0.0-rc.3 | TypeError: Cannot read property 'version' of undefined

[tomlla]

Version

4.0.0-rc.3

Environment info

$ uname -a
Linux 6eecff0756dc 5.2.11-arch1-1-ARCH #1 SMP PREEMPT Thu Aug 29 08:09:36 UTC 2019 x86_64 Linux

$ node --version
v10.16.3

$ npm version
{ test: '0.1.0',
  npm: '6.9.0',
  ares: '1.15.0',
  brotli: '1.0.7',
  cldr: '35.1',
  http_parser: '2.8.0',
  icu: '64.2',
  modules: '64',
  napi: '4',
  nghttp2: '1.39.2',
  node: '10.16.3',
  openssl: '1.1.1c',
  tz: '2019a',
  unicode: '12.1',
  uv: '1.28.0',
  v8: '6.8.275.32-node.54',
  zlib: '1.2.11' }

package.json

{
  "name": "test",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint",
    "test:unit": "vue-cli-service test:unit",
    "test:e2e": "vue-cli-service test:e2e"
  },
  "dependencies": {
    "axios": "^0.19.0",
    "lodash-es": "^4.17.15",
    "vue": "^2.6.10",
    "vue-router": "^3.1.2",
    "vuetify": "^1.5.5",
    "vuex": "^3.1.1"
  },
  "devDependencies": {
    "@babel/core": "^7.5.5",
    "@mdi/font": "^3.6.95",
    "@vue/cli": "4.0.0-rc.3",
    "@vue/cli-plugin-babel": "4.0.0-rc.3",
    "@vue/cli-plugin-eslint": "4.0.0-rc.3",
    "@vue/cli-plugin-unit-jest": "4.0.0-rc.3",
    "@vue/cli-service": "4.0.0-rc.3",
    "@vue/eslint-config-prettier": "^3.0.5",
    "@vue/test-utils": "^1.0.0-beta.29",
    "babel-jest": "^ 24.8.0",
    "html-webpack-harddisk-plugin": "^0.2.0",
    "normalize.css": "^8.0.1",
    "pug": "^2.0.4",
    "pug-plain-loader": "^1.0.0",
    "stylus": "^0.54.5",
    "stylus-loader": "^3.0.2",
    "vue-template-compiler": "^2.6.10",
    "vuetify-loader": "^1.0.5",
    "webpack-manifest-plugin": "^2.0.4"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ],
  "optionalDependencies": {
    "@vue/cli-plugin-e2e-cypress": "4.0.0-rc.3"
  }
}

babel.config.js

module.exports = {
  presets: [
    "@vue/app",
  ],
};

Steps to reproduce

$ npm run serve


> test@0.1.0 serve /test
> vue-cli-service serve

 ERROR  TypeError: Cannot read property 'version' of undefined
TypeError: Cannot read property 'version' of undefined
    at module.exports (/test/node_modules/@vue/cli-plugin-eslint/index.js:18:27)
    at plugins.forEach (/test/node_modules/@vue/cli-service/lib/Service.js:83:7)
    at Array.forEach (<anonymous>)
    at Service.init (/test/node_modules/@vue/cli-service/lib/Service.js:81:18)
    at Service.run (/test/node_modules/@vue/cli-service/lib/Service.js:220:10)
    at Object.<anonymous> (/test/node_modules/@vue/cli-service/bin/vue-cli-service.js:37:9)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! test@0.1.0 serve: `vue-cli-service serve`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the test@0.1.0 serve script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2019-09-12T11_26_06_785Z-debug.log

What is expected?

successfully running webpack dev server.

What is actually happening?

TypeError: Cannot read property 'version' of undefined

is happed in

module.exports (/test/node_modules/@vue/cli-plugin-eslint/index.js:18:27)

[LinusBorg]

Hi

Thanks for filing this issue! Could you please provide a small reproduction in a Github repository so we can debug this without trying to replicate this ourselves?

That would be very helpful, thanks!

[tomlla]

@LinusBorg

Thank you for your quick response.
I created a repository to reproduce this issue's problem.

https://github.com/tomlla/vuejs-vue-cli-issues-4569

[sodatea]

Did you just upgrade your dependencies directly from 3.0?
In v4 eslint is required as a dependency of the project itself.
So npm install --save-dev eslint@4 may fix the warning.

[sodatea]

Note the eslint version should be 4 for the config you're currently using (@vue/eslint-config-prettier@3).
ESLint 5 & 6 are only supported if you update the config to the latest version, too.

[tomlla]

@sodatea

Thank you for your suggestion.

Did you just upgrade your dependencies directly from 3.0?

Yes. I tried to upgrade my project that generated vue-cli v3.

---

Note the eslint version should be 4 for the config you're currently using (@vue/eslint-config-prettier@3).

Thankyou. I installed the eslint version 4 in add-eslint branch

I got another build error.

tomlla/vuejs-vue-cli-issues-4569#2

Anyway, I'll try to fix my build error.

Is there information about how to upgrade the existing vue-cli v3 base probject to vue-cli v4?

[sodatea]

How about trying it in a real-world app? There's neither .eslintrc.js file nor eslintConfig field of package.json in the reproduction repo. But in a real-world-app that can't happen.

As for the migration guide, it is still work-in-progress: https://github.com/vuejs/vue-cli/pull/4552/files

[tomlla]

I'm trying to upgrade a real-world app.
But I can't publish all of the source code because my job contract.
I'll add more files if possible. let me know necessary files if you noticed.

now I added .eslintrc.js

https://github.com/tomlla/vuejs-vue-cli-issues-4569/pull/2/files

[tomlla]

https://github.com/vuejs/vue-cli/pull/4552/files

👍 👍 👍 👍

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