Cant resolve dependency on Boilerplate project

Question

I've downloaded a Angular 5 / .NET 5 project, and normally when I run the command npm install, I don't have any problems.

But since yesterday when downloading a project and running this command I get this error:

C:\Users\ca\source\repos\CCM\angular\src>npm install
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: CCM@4.7.1
npm ERR! Found: @angular/compiler@10.2.1
npm ERR! node_modules/@angular/compiler
npm ERR!   @angular/compiler@"^10.2.1" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @angular/compiler@">=2.3.1 <10.0.0 || >9.0.0-beta <10.0.0 || >9.1.0-beta <10.0.0 || >9.2.0-beta <10.0.0" from codelyzer@5.2.2
npm ERR! node_modules/codelyzer
npm ERR!   dev codelyzer@"^5.1.2" 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\ca\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!     C:\Users\ca\AppData\Local\npm-cache\_logs\2021-03-24T08_34_44_177Z-debug.log

Normally I don't have any problem with this command so I'm wondering if it's a problem with my setup or with the project.

I can submit the full report if requested.

I know you're an elder here, but could it be an NPM, Node or angular cli version issue ? — Modar Na, Mar 24 '21 at 22:13
some indicated it is an NPM issue, others claimed that it is an dependency issue in codelyzer [check this](https://github.com/mgechev/codelyzer/issues/967). you can try `npm install --legacy-peer-deps` — Modar Na, Mar 25 '21 at 10:52
@ModarNa That did the trick, thank you so much. consider leaving an answer with your findings — Carsten Løvbo Andersen, Mar 25 '21 at 11:10

score 6 · Accepted Answer · answered Mar 25 '21 at 12:06

considering the line

npm ERR! peer @angular/compiler@">=2.3.1 <10.0.0 || >9.0.0-beta <10.0.0 || >9.1.0-beta <10.0.0 || >9.2.0-beta <10.0.0" from codelyzer@5.2.2

the error is from the codelyzer@5.2.2 dependencies, I found this closed issue on github which indicates that it is not really a problem
running npm install --legacy-peer-deps could solve it, for more information check this out.

LordMsz · Answer 2 · 2022-12-16T16:51:50.513

Found out that codelyzer is actually not needed for Angular 13 and newer, see Codelyzer requires Angular 9 instead of Angular 10.

Original answer before finding out:

As suggested in codelyzer GitHub issue mentioned in the other answer, upgrading codelyzer helped me:

Upgrade codelyzer to version to "^6.0.0"
Remove "package-lock.json"
Remove node_modules folder
npm install works now

I know it's an old question, but it happened to me having Angular 13 project working normally and then break. Not really sure why now, though.

Cant resolve dependency on Boilerplate project

2 Answers2