npm ERR! Could not resolve dependency: npm ERR! peer jasmine-core@">=3.8" from [email protected]

[weirdyang]

🐞 Bug report

Command (mark with an x)

• [ x] new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• extract-i18n
• run
• config
• help
• version
• doc

| Installing packages (npm)...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/jasmine-core
npm ERR!   dev jasmine-core@"~3.7.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer jasmine-core@">=3.8" from [email protected]
npm ERR! node_modules/karma-jasmine-html-reporter
npm ERR!   dev karma-jasmine-html-reporter@"^1.5.0" 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\ads\AppData\Local\npm-cache\eresolve-report.txt for a full report.

I get the following error when I try to create a new project. I've updated ng cli after reading this issue, but I'm still getting the error.

[weirdyang]

D:\personal\angular>ng v

 _                      _                 ____ _     ___
/ \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|

/ △ \ | '_ \ / | | | | |/ _ | '__| | | | | | |
/ ___ | | | | (| | || | | (| | | | || | | |
// __| ||_, |_,||_,|| _|||
|___/

Angular CLI: 12.1.1
Node: 14.15.4
Package Manager: npm 7.19.1
OS: win32 x64

Angular:
...

Package Version

@angular-devkit/architect 0.1201.1 (cli-only)
@angular-devkit/core 12.1.1 (cli-only)
@angular-devkit/schematics 12.1.1 (cli-only)
@schematics/angular 12.1.1 (cli-only)

[alan-agius4]

Looks like the issue is caused by a karma-jasmine-html-reporter release, were they dropped support for jasmine-core version 3.7 in a minor version.

Removing the lower bounds of a peerDependency should be considered a breaking changed due to NPM 7 new peer dependencies behaviour.

As a workaround you can do the following;

ng new --skip-install
Open package.json and bump jasmine-core to `~3.8.0`
npm i

[weirdyang]

Thank you.

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