[Snyk] Security upgrade @angular/platform-server from 9.1.13 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):

• src/frontend/packages/core/package.json

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]

Upgrading @angular/platform-server from version 9.1.13 to 19.2.21 is a massive undertaking that spans ten major versions. This is not a direct upgrade but a series of migrations with numerous significant breaking changes. Manual intervention and significant code refactoring are guaranteed.

Key Breaking Changes & Architectural Shifts:

• Complete Removal of View Engine: The legacy View Engine rendering engine was deprecated in v12 and completely removed in v13. All code and dependencies must be compatible with the modern Ivy compiler. This change alone requires a major migration effort.

• Shift to Standalone Components: Standalone components were introduced as stable in v15 and became the default architecture in v17, making NgModules optional. This fundamentally changes how applications are structured and bootstrapped, including the server-side entry point.

• Revolution in Server-Side Rendering (SSR): The SSR and hydration model has been completely overhauled.

  • v16 introduced non-destructive hydration, which prevents the page from flickering on load by reusing the server-rendered DOM.
  • v17 introduced the new @angular/ssr package and enhanced Static Site Generation (SSG) capabilities.
  • v19 introduced incremental hydration (in developer preview), allowing for parts of a page to be hydrated lazily.

• Build System Modernization: The build tooling has evolved significantly.

  • v12 moved to Webpack 5.
  • v17 adopted Vite and esbuild for significantly faster development server performance.
  • v19 deprecated the old :server builder in angular.json in favor of a new, unified application builder.

• Strict Environment Requirements: Each major version drops support for older versions of Node.js and TypeScript. For example, v17 requires Node.js 18.13.0+ and TypeScript 5.2+.

Recommendation: This upgrade cannot be performed in a single step. It requires a sequential migration, moving from one major version to the next (v9 → v10 → v11, etc.), running automated migration scripts provided by @angular/cli at each step, and performing extensive testing. This is a major project that requires careful planning and dedicated effort.

Source: Angular Update Guide, Official Angular Blog Posts

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.