I'm getting the following error when creating a new project using Angular CLI v13.1.0
\ Installing packages (npm)...npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: example-app@0.0.0
npm ERR! Found: typescript@4.5.3
npm ERR! node_modules/typescript
npm ERR! dev typescript@"~4.5.2" from the root project
npm ERR! peer typescript@">=4.4.3 <4.6" from @angular-devkit/build-angular@13.1.0
npm ERR! node_modules/@angular-devkit/build-angular
npm ERR! dev @angular-devkit/build-angular@"~13.1.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer typescript@">=4.4.2 <4.5" from @angular/compiler-cli@13.0.3
npm ERR! node_modules/@angular/compiler-cli
npm ERR! dev @angular/compiler-cli@"~13.0.0" from the root project
npm ERR! peer @angular/compiler-cli@"^13.0.0 || ^13.1.0-next" from @angular-devkit/build-angular@13.1.0
npm ERR! node_modules/@angular-devkit/build-angular
npm ERR! dev @angular-devkit/build-angular@"~13.1.0" 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
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!
npm ERR! See C:\Users\user\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\user\AppData\Local\npm-cache\_logs\2021-12-10T12_46_21_814Z-debug.log
× Package install failed, see above.
The Schematic workflow failed. See above.
I'm using Node JS version 16.13.1 and npm version 8.1.2
I tried clearing npm cache with --force, also reinstalled Node JS. Still no luck.
So I solved it like this:
I created the project using ng new. It then created the project but threw an error when installing the dependencies.
Then I manually edited the package.json file and replaced all angular package versions 13.0.0 with 13.1.0 and ran npm i.
After that, all packages were installed perfectly fine and I could run ng serve.
This is just a TypeScript patch version issue which is being tracked here: https://github.com/angular/angular-cli/issues/22333, so just downgrade or npm i --force until they fix it.
go to this path
C:\Users\user\AppData\Local
and delete this folder.
npm-cache
then test it.