@angular-devkit/core

Node.js v20 is no longer supported. The minimum supported Node.js versions are now v22.22.0 and v24.13.1.

The @angular-devkit/architect-cli package is no longer available. The architect CLI tool has been moved to the @angular-devkit/architect package.

The experimental @angular-devkit/build-angular:jest and @angular-devkit/build-angular:web-test-runner builders have been removed.

The @angular/build:dev-server (ng serve) now assigns the highest priority to the PORT environment variable. This value will override any port configurations specified in angular.json or via the --port command-line flag. This includes the default port 4200.

istanbul-lib-instrument is now an optional peer dependency.

The server no longer falls back to Client-Side Rendering (CSR) when a request fails host validation. Requests with unrecognized 'Host' headers will now return a 400 Bad Request status code. Users must ensure all valid hosts are correctly configured in the 'allowedHosts' option.

The ng commands will no longer automatically detect and use cnpm as the package manager. As an alternative use the .npmrc file to ensure npm uses the cnpm registry.

TypeScript versions older than 5.9 are no longer supported.

The javascriptEnabled option for Less is no longer supported. Projects relying on inline JavaScript within Less files will need to refactor their stylesheets to remove this dependency.

The splitting option in the unit-test builder is deprecated as it is no longer needed with Vitest 5.