June 2026 performance summary for City of Helsinki frontend repositories with a focus on delivering business value through infrastructure, reliability, modernization, and runtime configurability.

May 2026 was a cross-repo modernization and feature delivery sprint focused on performance, reliability, and developer velocity. Key outcomes include a major HDS React upgrade (5.0.0) across City of Helsinki/yjdh benefit/handler/shared UI, migrating components to enum-based APIs for safer, future-proof UI; the creation of a shared Button wrapper with loading state for consistent UX during async operations; and refactoring dialog variant typing using TypeScript Extract to enforce dialog-compatible variants at compile time. Observability and platform reliability were strengthened via Sentry Cloud migration, runtime environment configuration, and toolchain upgrades (pnpm and Node 24). Quality and stability improvements came from targeted UI tests (benefit handler and applicant), shared test utilities, and a comprehensive ESLint v9 upgrade, together with UI polish such as font-face assets and new components like OpenInNewTabLink.

April 2026 monthly summary focused on upgrading core web app infrastructure, hardening security, and stabilizing test and health-check pipelines across two repositories. Delivered major frontend/infra upgrades, implemented comprehensive dependency patching, and completed health-check migrations to ensure reliable startup and operation. These activities reduced security risk, improved reliability, and laid the groundwork for faster future upgrades.

March 2026: Delivered major improvements across City of Helsinki design system repositories, focusing on secure, provenance-enabled publishing and enhanced cookie consent management. Key features include patchrelease branch support, OIDC-based trusted publishing, and tooling upgrades for publishing provenance in helsinki-design-system, plus a Lerna upgrade to enable advanced publishing workflows and provenance metadata. In linkedcomponents-ui, cookie consent was enhanced to support authentication and analytics cookies with clearer data management signals. Security hardening of the release process and removal of deprecated workflows contributed to more reliable, auditable releases.