December 2025 monthly summary for prettier/angular-html-parser: Implemented targeted documentation improvements to reduce ambiguity in Vitest browser-mode usage and Angular change detection behavior, contributing to faster onboarding and fewer test configuration errors.

November 2025 focused on reliability and migration readiness across three major projects. Key outcomes include a sitemap URL format fix in Prettier's Angular HTML parser, Vitest-compatible migration improvements in Angular CLI (mockDate migration adjusted to vi.setSystemTime(new Date()) and a browserMode option for the jasmine-vitest schematic), and a null-safety hardening fix in Spring Framework to avoid passing null to non-nullable arguments. Impact: improved sitemap accuracy for search indexing, smoother migration path for Vitest users, and higher runtime safety with stronger null-safety. Technologies/skills demonstrated include TypeScript and Angular schematics, Vitest/Jasmine migration patterns, and Java null-safety and refactoring for maintainability.