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Add suspense, resource, and transitions — Phase 2 complete

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- suspense render-dom form: shows fallback while resource loads, swaps
  to body content when resource signal resolves
- resource async signal: wraps promise into signal with loading/data/error
  dict, auto-transitions on resolve/reject via promise-then
- transition: defers signal writes to requestIdleCallback, sets pending
  signal for UI feedback during expensive operations
- Added schedule-idle, promise-then platform functions
- All Phase 2 features now marked Done in status tables

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-03-08 16:40:13 +00:00
parent a496ee6ae6
commit 7efd1b401b
6 changed files with 211 additions and 23 deletions
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39
sx/sx/reactive-islands.sx
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@@ -149,7 +149,19 @@
(td :class "px-3 py-2 text-stone-700" "Phase 2 remaining")
(td :class "px-3 py-2 text-stone-500 font-medium" "P2")
(td :class "px-3 py-2 font-mono text-xs text-stone-500"
(a :href "/reactive-islands/phase2" :sx-get "/reactive-islands/phase2" :sx-target "#main-panel" :sx-select "#main-panel" :sx-swap "outerHTML" :sx-push-url "true" :class "text-violet-700 underline" "Error boundaries, suspense, transitions")))))))))
(a :href "/reactive-islands/phase2" :sx-get "/reactive-islands/phase2" :sx-target "#main-panel" :sx-select "#main-panel" :sx-swap "outerHTML" :sx-push-url "true" :class "text-violet-700 underline" "Error boundaries, suspense, transitions")))
(tr :class "border-b border-stone-100"
(td :class "px-3 py-2 text-stone-700" "Error boundaries")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "adapter-dom.sx: error-boundary render-dom form"))
(tr :class "border-b border-stone-100"
(td :class "px-3 py-2 text-stone-700" "Suspense + resource")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "adapter-dom.sx, signals.sx"))
(tr
(td :class "px-3 py-2 text-stone-700" "Transitions")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "signals.sx: transition, schedule-idle"))))))))
;; ---------------------------------------------------------------------------
;; Live demo islands
@@ -407,12 +419,8 @@
(p :class "mt-2 text-sm text-stone-500" "Run: " (code "python3 shared/sx/tests/run.py signals")))
(~doc-section :title "What's next" :id "next"
(p "Phase 1 and Phase 2 P0/P1 features are complete. The remaining P2 features are optional enhancements:")
(ul :class "space-y-2 text-stone-600 list-disc pl-5"
(li (strong "Error boundaries") " — catch errors in island subtrees, render fallback UI")
(li (strong "Suspense + resource") " — async-aware rendering with loading states")
(li (strong "Transitions") " — non-urgent signal updates for expensive re-renders"))
(p "See the " (a :href "/reactive-islands/phase2" :sx-get "/reactive-islands/phase2" :sx-target "#main-panel" :sx-select "#main-panel" :sx-swap "outerHTML" :sx-push-url "true" :class "text-violet-700 underline" "Phase 2 plan") " for details."))))
(p "Phase 1 and Phase 2 are complete. The reactive islands system now includes: signals, effects, computed values, islands, disposal, stores, event bridges, reactive DOM rendering, input binding, keyed reconciliation, refs, portals, error boundaries, suspense, resource, and transitions.")
(p "See the " (a :href "/reactive-islands/phase2" :sx-get "/reactive-islands/phase2" :sx-target "#main-panel" :sx-select "#main-panel" :sx-swap "outerHTML" :sx-push-url "true" :class "text-violet-700 underline" "Phase 2 plan") " for the full feature list and design details."))))
;; ---------------------------------------------------------------------------
@@ -660,11 +668,14 @@
(td :class "px-3 py-2 text-stone-700" "Refs + portals")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 text-stone-700" "ref, ref-get, ref-set!, :ref, portal"))
(tr :class "border-b border-stone-100"
(td :class "px-3 py-2 text-stone-700" "Error boundaries + suspense")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 text-stone-700" "error-boundary, suspense, resource"))
(tr
(td :class "px-3 py-2 text-stone-700" "Phase 2 remaining")
(td :class "px-3 py-2 text-violet-700 font-medium"
(a :href "/reactive-islands/phase2" :sx-get "/reactive-islands/phase2" :sx-target "#main-panel" :sx-select "#main-panel" :sx-swap "outerHTML" :sx-push-url "true" :class "text-violet-700 underline" "Details →"))
(td :class "px-3 py-2 text-stone-700" "Error boundaries, suspense, transitions"))))))
(td :class "px-3 py-2 text-stone-700" "Transitions")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 text-stone-700" "signals.sx: transition, schedule-idle"))))))
(~doc-section :title "Design Principles" :id "principles"
(ol :class "space-y-3 text-stone-600 list-decimal list-inside"
@@ -720,17 +731,17 @@
(tr :class "border-b border-stone-100"
(td :class "px-3 py-2 text-stone-700" "Error boundaries")
(td :class "px-3 py-2 text-stone-500 text-xs" "componentDidCatch")
(td :class "px-3 py-2 text-stone-500 font-medium" "P2")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "adapter-dom.sx"))
(tr :class "border-b border-stone-100"
(td :class "px-3 py-2 text-stone-700" "Suspense")
(td :class "px-3 py-2 text-stone-500 text-xs" "Suspense + lazy")
(td :class "px-3 py-2 text-stone-500 font-medium" "P2")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "adapter-dom.sx, signals.sx"))
(tr
(td :class "px-3 py-2 text-stone-700" "Transitions")
(td :class "px-3 py-2 text-stone-500 text-xs" "startTransition")
(td :class "px-3 py-2 text-stone-500 font-medium" "P2")
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "signals.sx"))))))
;; -----------------------------------------------------------------------