peer dependency confilct when creating projects using vue 2 on npm

[Gregory-Ledray]

Version

4.5.15

Reproduction link

github.com

Environment info

Windows, new laptop & installation

Steps to reproduce

Run

vue create project_name

to create a vue project and then choose vue 2. Then

cd project_name && npm update

What is expected?

Dependencies updated

What is actually happening?

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR!
npm ERR! While resolving: @vue/[email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/eslint
npm ERR!   peer eslint@">= 4.12.1" from [email protected]
npm ERR!   node_modules/babel-eslint
npm ERR!     dev babel-eslint@"^10.1.0" from the root project
npm ERR!   peer eslint@">=5.0.0" from [email protected]
npm ERR!   node_modules/vue-eslint-parser
npm ERR!     vue-eslint-parser@"^7.0.0" from [email protected]
npm ERR!     node_modules/eslint-plugin-vue
npm ERR!       dev eslint-plugin-vue@"^6.2.2" from the root project
npm ERR!   1 more (the root project)
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer eslint@">= 1.6.0 < 7.0.0" from @vue/[email protected]
npm ERR! node_modules/@vue/cli-plugin-eslint
npm ERR!   dev @vue/cli-plugin-eslint@"^4.5.15" from the root project
npm ERR!
npm ERR! Conflicting peer dependency: [email protected]
npm ERR! node_modules/eslint
npm ERR!   peer eslint@">= 1.6.0 < 7.0.0" from @vue/[email protected]
npm ERR!   node_modules/@vue/cli-plugin-eslint
npm ERR!     dev @vue/cli-plugin-eslint@"^4.5.15" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!
npm ERR! See C:\Users\greg\AppData\Local\npm-cache\eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!

---

Opening because https://github.com/vuejs/vue-cli/issues/6270 is closed and I can't re-open it.

Workaround is from: https://github.com/vuejs/vue-cli/issues/6270#issuecomment-777103686

npm update --legacy-peer-deps
npm audit fix --legacy-peer-deps

[awulkan]

I have the same issue. We can't even install or build our projects anymore. The only workaround I've found is the one suggested above, but it feels dirty.

[Akuket]

Same problem here with initial install from vue-cli

Node => v16.15.1 Npm => 8.11.0 Vue-cli => 5.0.6

Generated 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"
  },
  "dependencies": {
    "core-js": "^3.8.3",
    "vue": "^2.6.14",
    "vue-router": "^3.5.1",
    "vuex": "^3.6.2"
  },
  "devDependencies": {
    "@babel/core": "^7.12.16",
    "@babel/eslint-parser": "^7.12.16",
    "@vue/cli-plugin-babel": "~5.0.0",
    "@vue/cli-plugin-eslint": "~5.0.0",
    "@vue/cli-plugin-router": "~5.0.0",
    "@vue/cli-plugin-vuex": "~5.0.0",
    "@vue/cli-service": "~5.0.0",
    "@vue/eslint-config-standard": "^6.1.0",
    "eslint": "^7.32.0",
    "eslint-plugin-import": "^2.25.3",
    "eslint-plugin-node": "^11.1.0",
    "eslint-plugin-promise": "^5.1.0",
    "eslint-plugin-vue": "^8.0.3",
    "sass": "^1.32.7",
    "sass-loader": "^12.0.0",
    "vue-template-compiler": "^2.6.14"
  }
}

Hope it will help

[christian-reichart]

Create an .npmrc file on root with the content legacy-peer-deps=true

[mzm008]

how to fix this issue?

[bheemireddinanibabu]

To solve this issue simply downgrade the version which is suggested by npm.

For eg. npm ERR! code ERESOLVE npm ERR! ERESOLVE could not resolve npm ERR! npm ERR! While resolving: @vue/[email protected] npm ERR! Found: [email protected] npm ERR! node_modules/eslint npm ERR! peer eslint@">= 4.12.1" from [email protected] npm ERR! node_modules/babel-eslint npm ERR! dev babel-eslint@"^10.1.0" from the root project npm ERR! peer eslint@">=5.0.0" from [email protected] npm ERR! node_modules/vue-eslint-parser npm ERR! vue-eslint-parser@"^7.0.0" from [email protected] npm ERR! node_modules/eslint-plugin-vue npm ERR! dev eslint-plugin-vue@"^6.2.2" from the root project npm ERR! 1 more (the root project) npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer eslint@">= 1.6.0 < 7.0.0" from @vue/[email protected] npm ERR! node_modules/@vue/cli-plugin-eslint npm ERR! dev @vue/cli-plugin-eslint@"^4.5.15" from the root project

Here it is saying

Could not resolve dependency: npm ERR! peer eslint@">= 1.6.0 < 7.0.0" from @vue/[email protected]

So please update eslint version between >= 1.6.0 < 7.0.0 in package.json file and then run command npm install If you get any error related to resolving dependency. Please follow this

Thank you.