WRNexusJS/docs/40-POINT-IMPLEMENTATION-0.3.md

WRNexusJS 0.3 — 40-Point Implementation Matrix

Legend:

• Existing + hardened: capability already existed and was preserved or extended
• Implemented: new usable public API/runtime behavior in 0.3
• Foundation / experimental: contract and integration seam exist; advanced provider-specific implementations should remain opt-in until they receive production soak testing

#	Improvement	0.3 implementation	Level
1	Formal language specification	Canonical spec constants, stable diagnostics, and docs/WRN-LANGUAGE-SPEC-1.0.md	Implemented
2	Shared parser and AST	New @wrnexus/syntax; compiler compatibility re-exports	Implemented
3	Compile-time/runtime separation	Runtime metadata, server-only suppression, compile-time diagnostics and transforms	Existing + hardened
4	Fine-grained reactivity	Batched signals, dependency-tracked computed/effects, coalesced renderers	Implemented
5	Deterministic SSR/hydration	Stable hydration IDs, runtime/strategy metadata, mismatch diagnostics, keyed data-for reconciliation and keyed {#each} syntax	Implemented
6	Partial hydration/islands	load/idle/visible/interaction/media/none strategies	Implemented
7	Server-only execution	runtime = "server", load server, browser-interactivity rejection	Implemented
8	Data-loading model	defineLoader, defineAction, request-local dedupe, WRN loaders/actions	Foundation / experimental
9	Streaming SSR	Promise and AsyncIterable document streams and response helper	Implemented
10	Routing	groups, optional and catch-all params, conflict checks, typed builders	Implemented
11	Middleware	Existing ordered middleware plus tracing and tenancy middleware	Existing + hardened
12	Typed API/RPC	validated endpoint definitions, typed RPC client, structured errors	Implemented
13	Security defaults	Existing CSP/CSRF/cookies/CORS/body guards plus WRN security metadata	Existing + hardened
14	DevToolbar	Runtime diagnostic bridge and existing accessibility/performance/SEO/security rules	Existing + hardened
15	Optimization reports	dist/build-report.json, CLI analyzer, route/assets/budget measurements	Implemented
16	Error messages	Stable WRN codes, positions, code frames, hints	Implemented
17	Language server/editor	VS Code diagnostics/completion/grammar/snippets aligned to 0.3 syntax	Existing + hardened
18	Schemas/validation	Existing shared form/API validation retained; endpoint schema contract added	Existing + hardened
19	Authentication primitives	Existing auth/session/OAuth/passkey-related packages retained; security metadata seam	Existing + hardened
20	Multi-tenancy	tenant context, resolver/middleware, subdomain/domain/path runtime config	Implemented
21	Jobs/cron/workflows	priority, concurrency, idempotency, cancellation, job/workflow/cron helpers	Implemented
22	Realtime	Existing rooms/pub-sub/Redis bridge retained with shared runtime	Existing + hardened
23	Plugin system	deterministic lifecycle, AST/code transforms, diagnostics, server/build hooks	Implemented
24	Infrastructure adapters	portable fetch handler and existing Bun/Node seams; adapter config/reporting	Foundation / experimental
25	Build caching/monorepo	Existing compile cache and targeted HMR retained; build cache config seam	Existing + hardened
26	Compatibility/migrations	reversible 0.3 migration, source backup/report, doctor, unique versions	Implemented
27	Testing	new syntax/core/compiler/router/queue/SSR/update/editor regressions	Implemented
28	Performance budgets	configurable route JS/CSS, HTML, image, hydration, and SSR budgets	Implemented
29	Observability	tracer/span APIs, request middleware, Server-Timing, console exporter	Implemented
30	Component architecture	Existing @wrnexus/ui inventory retained; syntax metadata supports typed tooling	Existing + hardened
31	Design tokens	Existing --wrn-* system and theme resolution retained	Existing + hardened
32	Accessibility	compile-time missing-alt diagnostic plus existing DevToolbar scanning	Implemented
33	Motion/transitions	Existing CSR/lifecycle foundation retained; strategy can be plugin/runtime extended	Foundation / experimental
34	Documentation	language, architecture, upgrade, implementation, test checklist docs	Implemented
35	AI-friendly framework	machine-readable spec/AST/diagnostics/build report and existing AI package	Implemented
36	Feature flags/experimental APIs	async context-aware feature flags and typed config gates	Implemented
37	Public API boundaries	syntax/compiler separation and explicit package exports	Implemented
38	Configuration	typed validation, source explanation, profile/env visibility	Implemented
39	Gateway	existing host routing/auth/WebSocket/security gateway preserved; internal contracts unchanged	Existing + hardened
40	Focused roadmap/release gates	0.3 stability levels, verification script, audit and test matrix	Implemented

Important release distinction

This matrix records code present in the 0.3 source tree. “Foundation / experimental” does not mean absent; it means the API or adapter seam is implemented but should not be advertised as provider-complete until the relevant deployment, animation, cache, or server-component adapters receive real production tests.

Backward-compatibility gates

1. Existing compiler imports continue through re-exports.
2. Existing .wrn members and directives remain accepted.
3. New runtime behavior is disabled unless syntax/config opts in.
4. Source migration is conservative, backed up, idempotent, and reported.
5. Existing route syntax retains matching precedence.
6. Existing dev and production request runtimes remain shared.
7. Every bug fix receives a regression test or static verification assertion.