What causes npm could not resolve errors?-CodePudding

I have existing project that I tried installing package via npm install.

I cloned my project again thinking that it would fix, but every time I run npm install I am getting this error:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR! 
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/eslint
npm ERR!   dev eslint@"^8.20.0" from the root project
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!   3 more (eslint-config-prettier, eslint-plugin-prettier, eslint-utils)
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer eslint@"^2 || ^3 || ^4 || ^5 || ^6 || ^7.2.0" from [email protected]
npm ERR! node_modules/eslint-plugin-import
npm ERR!   dev eslint-plugin-import@"^2.23.4" from the root project
npm ERR!   peer eslint-plugin-import@"^2.22.1" from [email protected]
npm ERR!   node_modules/eslint-config-airbnb
npm ERR!   1 more (eslint-config-airbnb-base)
npm ERR! 
npm ERR! Conflicting peer dependency: [email protected]
npm ERR! node_modules/eslint
npm ERR!   peer eslint@"^2 || ^3 || ^4 || ^5 || ^6 || ^7.2.0" from [email protected]
npm ERR!   node_modules/eslint-plugin-import
npm ERR!     dev eslint-plugin-import@"^2.23.4" from the root project
npm ERR!     peer eslint-plugin-import@"^2.22.1" from [email protected]
npm ERR!     node_modules/eslint-config-airbnb
npm ERR!     1 more (eslint-config-airbnb-base)
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.

I have no idea what is going on.

what is the reason for this error?
how can I get rid of it?
is it the eslint that I have to remove to fix it?

CodePudding user response：

One possible cause for it is that you have some dependency, which has a peer dependency of specific version. Now, in your package.json you have another version of this peer dependency, so npm tells you this.

You have 2 options:

Use in your package.json dependencies that are required by the problematic package
Use --legacy-peer-deps flag or set this setting in .npmrc file to be true, which will ignore the peer dependency requirement and can possible break your code.

CodePudding user response：

this error can when you cannot install npm on the right folder this answer will help your sir...... otherwise your will try this npm install --legacy-peer-deps then it adds this in my package-lock.json

"node_modules/@unimodules/react-native-adapter": { "version": "5.7.0", "resolved": "https://registry.npmjs.org/@unimodules/react-native-adapter/-/react-native-adapter-5.7.0.tgz", "integrity": "sha512-L557/ sc8ZKJVgo1734HF1QNCxrt/fpqdmdNgySJT kErux/AJNfPq3flsK0fyJduVmniTutYIMyW48cFoPKDA==", "dependencies": { "invariant": "^2.2.4", "lodash": "^4.5.0" }, "peerDependencies": { "react-native": "*", "react-native-web": "~0.13.7" } },

...

"@unimodules/react-native-adapter": { "version": "5.7.0", "resolved": "https://registry.npmjs.org/@unimodules/react-native-adapter/-/react-native-adapter-5.7.0.tgz", "integrity": "sha512-L557/ sc8ZKJVgo1734HF1QNCxrt/fpqdmdNgySJT kErux/AJNfPq3flsK0fyJduVmniTutYIMyW48cFoPKDA==", "requires": { "invariant": "^2.2.4", "lodash": "^4.5.0" } },