Npm Install is Failing (Could not resolve dependency)

Question

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: foliosure@1.0.1
npm ERR! Found: zone.js@0.8.29
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/core@7.2.16
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 primeng_latest@11.2.3
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 primeng_latest@11.2.3
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

This is my package.json dependencies file:

  "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 tried downgrading the versions but it still gives the error. I also tried to google the solution but didn't find the right solution, would appreciate any help, Thank you.

"devDependencies": "@angular-builders/custom-webpack": "^7.4.3", "@angular-builders/dev-server": "~7.3.1", "@angular-devkit/build-angular": "^0.13.2", "@angular-devkit/build-ng-packagr": "~0.13.0", "@angular-devkit/core": "^11.0.1", "@angular/compiler-cli": "~7.2.0", "ng-packagr": "^4.2.0", "primeng": "^6.1.7", "ts-node": "~7.0.0", "tsickle": ">=0.34.0", "tslib": "^1.9.0", "tslint": "~5.11.0", "typescript": "~3.2.2", "webpack-dev-server": "^3.11.2" — Ananya Rao, Feb 22 '21 at 18:26
You have package-lock.json file try following command: npm ci, If it still fails delete package-lock.json and node_modules folder and then try npm i command. — Rohit Dalal, Feb 22 '21 at 19:02
Thanks Rohit Dalal, but it didnt work, getting the same error. — Ananya Rao, Feb 23 '21 at 05:08

score 76 · Accepted Answer · edited Jul 11 '22 at 10:00

76

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

edited Jul 11 '22 at 10:00

BuZZ-dEE

6,075
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answered Mar 08 '21 at 14:27

Reva

784
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1

after wasting my whole day.. I found this and it solved my issee – Qwerty May 02 '21 at 17:00
Thank You! Solved ```npm install @formkit/auto-animate``` install issue. – Ayush Aug 10 '22 at 01:35
I ran this and went from 1 error to 45 errors – Markus Sep 26 '22 at 13:29
@Markus please tell the rest of us how you solved those, thanks – Nathan majicvr.com Oct 21 '22 at 23:40
iirc it was a matter of deleting the node modules folder and making sure all versions in package.json lined up with the versions that the dependencies expected – Markus Oct 22 '22 at 19:01

user9869932 · Answer 2 · 2021-06-04T11:27:00.790

27

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.

edited Jun 04 '21 at 11:27

answered Apr 01 '21 at 22:51

user9869932

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score 2 · Answer 3 · answered Mar 31 '21 at 04:43

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 npm@6.2.0

now run npm install in your project folder

npm install
now npm start or ng serve to work perfectly

Npm Install is Failing (Could not resolve dependency)

3 Answers3