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Build runtime infrastructure layer: aapp + 5 new artifacts
Adds the application composition root and six new runtime artifacts. lang
and logr alone could not cover an app surface — locale propagation, format
helpers, frontend preferences, validation, persistence and DOM service all
needed independent artifacts that aapp wires together under a single
locale source of truth and a shared logger.
New artifacts:
- aapp: composition root. createActiveApp + createTestApp +
App.createSiumEngine + frontend.persist + Storage wiring.
- stor: pluggable adapters (local/session/memory/cookie + SSR via
cookieAdapter.fromCookies), envelope versioning + migrate +
TTL, validate via Standard Schema, intra-tab + cross-tab sync,
Storage.clear(), per-entry adapter/namespace overrides.
- adom: reactive DOM service. shareViewport opt-in + per-window
tracker, dispose(). breakpoints, viewport, attribute writes.
- fend: frontend preferences (theme, mode, dir, density,
reducedMotion, reducedSound) with auto/clear/isAuto pattern.
- fmts: localized formatting (numbers, currency, units, dates) with
shared LocaleSource and per-domain auto/clear pattern.
- sium: validation engine. Standard Schema interop, Lang/Logger
injection, codec/refine/transform, domain types
(color/date/time), introspection.
Existing artifacts extended:
- lang: BCP 47 SupportedLocale (LangBase | base-region), mono lang
for monolingual apps, extend() leaf-overwrite warning,
EngineLang/ActiveLang naming alignment with the rest of the
project (no Instance suffix).
- logr: EngineLogger.dispose(), failureThrottleMs anti-cascade for
transports, README sync to the per-level filter API
(minLevel removed).
Cross-cutting:
- $locale: shared LocaleSource type consumed by fmts and fend.
- arts/README.md: artifact map, dependency graph, naming conventions.
- Test pages for every artifact under /test/<artifact>.
733 tests passing; svelte-check clean except 2 pre-existing errors on
sium/svelte provider (port pending).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
6 months ago
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export const UNITS_ERRORS = {
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UNKNOWN_UNIT: (unit: string): string => `[formats.units] Unknown unit: "${unit}".`,
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INCOMPATIBLE_UNITS: (from: string, fromBase: string, to: string, toBase: string): string =>
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`[formats.units] Incompatible units: "${from}" (${fromBase}) and "${to}" (${toBase}).`,
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DEFAULT_UNIT_NOT_FOUND: (system: string, kind: string): string =>
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`[formats.units] Default unit not found for "${system}:${kind}".`
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} as const;
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