Npm install fail with node 15 ( Not LTS ) "@angular-devkit/build-angular": "~0.1000.0"

Question

npm install fail with below dependency "@angular-devkit/build-angular" : sample package.json

  {
  "name": "myApp",
  "version": "0.0.1",
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.1000.0"
  }
}

I am using node V15.5.1 npm v7.3.0

I'm getting below errors :

npm ERR! Found: [email protected] npm ERR! node_modules/typescript npm ERR! peer typescript@">=3.9 <4.1" from @angular/[email protected] npm ERR! node_modules/@angular/compiler-cli npm ERR! peer @angular/compiler-cli@">=10.0.0-next.0 < 11" from @angular-devkit/[email protected] npm ERR!
node_modules/@angular-devkit/build-angular npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer typescript@">=3.9 < 3.10" from @angular-devkit/[email protected] npm ERR! node_modules/@angular-devkit/build-angular

not sure why node/npm is looking for typescript 4.0.5 instead of the version that can suit both the ranges. (peer typescript@">=3.9 <4.1" and peer typescript@">=3.9 < 3.10" ) is this working as expected .

i can able to run the npm install with --legacy-peer-deps flag.

is this a problem or its working as designed . why cant npm choose the version which suits both cases

Juha Kervinen · Accepted Answer · 2021-01-18 14:18:06Z

0

Use LTS version of node, currently 14.15.4. Changing the version depends on your OS and package manager, but at least on MacOS and Homebrew it goes like this:

brew update
brew install node@14
brew link --overwrite node@14

answered Jan 18, 2021 at 14:18

Juha Kervinen

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2 Comments

saravana Over a year ago

thanks for your answer . i like to know is this the expected behaviour going forward in new releases, or some bug with npm.

Juha Kervinen Over a year ago

Ah, ok I undestood that the question was "how to make it work". It certainly looks like a bug in npm to me and looks like someone (you?) has reported it: github.com/npm/cli/issues/2510 But in general I think it's a good idea to stick with LTS versions when doing angular development.

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