Introduce RemoteData<E,T> (Loading | Empty | Failure | Success) plus
fromResource and an exhaustive foldRemote. The data lives ON the state,
so "loaded without value" or "error with stale value" are unrepresentable.
AsyncComponent now derives a single rd() and pulls value/error out via the
fold instead of a loose State string. Public API (resource/isEmpty inputs,
the four slot directives, the ASYNC array) is unchanged, so the dashboard,
detail page, and async stories need no edits.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The shared foundation for the "make impossible states impossible" work:
- assertNever for compile-time exhaustiveness in union switches
- Result<E,T> + ok/err constructors (plain objects, no classes)
- Brand<T,B> for nominal types
No runtime dependency — this is the whole "library".
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Fix full-bleed header/footer (align-items:stretch + block hosts; centered
content column via shared --app-content-max).
- New templates/page-shell (back-link + heading + intro + content, narrow mode);
all pages refactored to compose it.
- Async state management with native httpResource + <app-async> wrapper that
renders exactly one of loading/empty/error/loaded (impossible states
unrepresentable); delayed spinner + skeleton atoms for slow/fast connections.
- Scenario interceptor (?scenario=slow|loading|empty|error) to demo every state.
- Storybook: spinner/skeleton/page-shell/async-states stories.
- README rewritten as a guide (atomic design, reuse benefits, state handling).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Demonstrates the atomic-design payoff: a whole new flow (route + page + nav
link) reuses page-layout, heading, alert, form-field, text-input, button and
link with no new component files.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Atoms/molecules/organisms/templates/pages composing the NL Design System
(Utrecht) CSS themed Rijkshuisstijl via @rijkshuisstijl-community tokens.
Login -> dashboard -> registration detail, mock JSON over HttpClient, Storybook
organized by atomic layer.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
