'Npm Install is Failing (Could not resolve dependency)

When i try to do npm install i get the following 

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/zone.js
npm ERR!   zone.js@"~0.8.26" from the root project
npm ERR!   peer zone.js@"~0.8.26" from @angular/[email protected]
npm ERR!   node_modules/@angular/core
npm ERR!     @angular/core@"~7.2.0" from the root project
npm ERR!     peer @angular/core@"^7.0.0 || ^8.0.0 || ^9.0.0 || ^10.0.0 || ^11.0.0" from [email protected]
npm ERR!     node_modules/primeng_latest
npm ERR!       primeng_latest@"npm:primeng@^11.2.0" from the root project
npm ERR!     3 more (@angular/common, @angular/forms, @angular/platform-browser)
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer zone.js@"^0.10.2" from [email protected]
npm ERR! node_modules/primeng_latest
npm ERR!   primeng_latest@"npm:primeng@^11.2.0" 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

**Please suggest a solution to resolve this error, Thank you in advance.**

**Dependencies in Package.json**
  "dependencies": 
    "@angular/compiler": "~7.2.0",
    "@angular/core": "~7.2.0",
    "@angular/forms": "~7.2.0",
    "@angular/http": "^7.2.4",
    "@angular/material": "^7.3.7",
    "@angular/router": "~7.2.0",
    "@types/d3": "^5.7.2",
    "bootstrap": "^4.4.1",
    "codemirror": "^5.58.2",
    "file-saver": "^2.0.0",
    "font-awesome": "^4.7.0",
    "highcharts": "^9.0.0",
    "material-design-icons": "^3.0.1",
    "moment": "^2.24.0",
    "ngx-spinner": "^7.2.0",
    "ngx-toastr": "^9.2.0",
    "primeicons": "^1.0.0",
    "primeng": "^7.0.5",
    "primeng_latest": "npm:primeng@^11.2.0",
    "rxjs": "~6.3.3",
    "zone.js": "~0.8.26"

I have only 3 months experience in angular, I tried downgrading the versions but it still gave error also tried to google the solution but didnt find the right solution, would appreciate any help, Thank you.

node.jsangularnpm


Solution 1:[1]

Looks like it's a problem with Peer Dependencies try with npm install --legacy-peer-deps.

Solution 2:[2]

You can skip peer dependency conflict checks by running npm install --legacy-peer-deps or you can set npm config set legacy-peer-deps true and then run npm install once again.

Solution 3:[3]

If you want to run the angular code of your friend in your machine then follow the steps.

step 1: this can be happen due to version mismatch in your node version and your friends node version and npm version. C://projectFolder> node --version then C://projectFolder> npm -v

step 2: If the version is mismatch then uninstall node in your machine then restart then install the node version of your friend.

step 3: run the below code example

1.

npm install npm@[version]

in my machine

npm install -g [email protected]

  1. now run npm install in your project folder

    npm install

  2. now npm start or ng serve to work perfectly

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Reva
Solution 2
Solution 3 Pradeep Kumar Das

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