npm could not install during migrate Angular | Angular Community | Page 1

neat idol Nov 9, 2024, 2:28 PM

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1. During migration, npm could not installed automatically and there were conflicts errors and warn
2. Even on thenpm install && --force same @angular-devkit/schematics Error
3. Migrating angular 9 to 10
4. Current Node v18.x Angular 9.x Ionic v5
5. Administrator using for vs code to resolve EPERM: operation not permitted has been done

npx @angular/cli@10 update @angular/core@10 @angular/cli@10 --force

The "@angular-devkit/schematics" package cannot be resolved from the workspace root directory. This may be due to an unsupported node modules structure. Please remove both the "node_modules" directory and the package lock file; and then reinstall. If this does not correct the problem, please temporarily install the "@angular-devkit/schematics" package within the workspace. It can be removed once the update is complete.

limber mortar Nov 11, 2024, 2:30 PM

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Hi,

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Are you able to share the package.json?

compact raft Nov 11, 2024, 3:12 PM

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Please note that node v18 is not supported by Angular v9/v10, this issue might be related to that. For Angular v9/v10 you should be using node v12 (https://angular.dev/reference/versions#unsupported-angular-versions)

#npm could not install during migrate Angular