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Discussion on: Upgrading to AngularFire 6 with Angular 9

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janfinn1

In attempting to update using the command:
ng update @angular/core @angular/cli

It failed with the following error:

Your global Angular CLI version (9.1.9) is greater than your local
version (9.0.0-rc.7). The local Angular CLI version is used.

To disable this warning use "ng config -g cli.warnings.versionMismatch false".
The installed Angular CLI version is older than the latest stable version.
Installing a temporary version to perform the update.
Installing packages for tooling via npm.
Installed packages for tooling via npm.
Using package manager: 'npm'
Collecting installed dependencies...
Found 33 dependencies.
Fetching dependency metadata from registry...
Package '@angular/core' is already up to date.
Package "codelyzer" has an incompatible peer dependency to "@angular/compiler" (requires ">=2.3.1 <8.0.0 || >7.0.0-beta <8.0.0" (extended), would install "9.1.11").
✖ Migration failed: Incompatible peer dependencies found.
Peer dependency warnings when installing dependencies means that those dependencies might not work correctly together.
You can use the '--force' option to ignore incompatible peer dependencies and instead address these warnings later.
See "/tmp/ng-soyA2A/angular-errors.log" for further details.