[Snyk] Security upgrade @angular/platform-server from 14.3.0 to 19.2.21

[patzeltj]

Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json

⚠️ Warning

Failed to update the package-lock.json, please update manually before merging.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Server-side Request Forgery (SSRF) SNYK-JS-ANGULARPLATFORMSERVER-16097942	696

Breaking Change Risk

Notice: This assessment is enhanced by AI.

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[patzeltj]

This is a major upgrade spanning five versions, from Angular 14 to 19. It introduces a series of significant breaking changes, new APIs, and fundamental architectural shifts. A direct upgrade is not feasible; a sequential, version-by-version migration is required (14->15, 15->16, etc.) to manage the changes.

Key Breaking Changes & Architectural Shifts:

• Standalone as Default: The application architecture shifts from NgModules to standalone components, directives, and pipes. This is a fundamental change introduced in v14, becoming stable in v15 and the default in v17. Your application bootstrap and structure will need a complete overhaul.

• Server-Side Rendering (SSR) and Hydration Overhaul: The entire approach to SSR has been modernized.

  • v16 introduced non-destructive hydration, which reuses the server-rendered DOM instead of re-rendering it, preventing screen flicker.
  • v17 integrated SSR more deeply with the new @angular/ssr package.
  • v19 introduced a developer preview of incremental hydration, allowing parts of a page to become interactive on demand.
    This requires rewriting the server configuration and bootstrap process.

• New Template Control Flow: Angular v17 replaced structural directives like *ngIf and *ngFor with a new, built-in block syntax (@if, @for). Automated migrations via ng update will assist with this, but it's a major syntax change.

• Build System Modernization: The build toolchain has been replaced. Angular v17 defaults to using Vite and esbuild, resulting in significantly faster build times but requiring updates to angular.json configurations. The separate server builder

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