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Remove redundant features: ref sugar, suspense, transitions

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- ref/ref-get/ref-set! functions removed (just dict wrappers — use dict
  primitives directly). The :ref attribute stays in adapter-dom.sx.
- Suspense form removed (if/when + deref on resource signals covers it)
- Transition function removed (fine-grained signals already avoid jank)
- Kept: error-boundary, resource, portal, :ref attribute

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-03-08 16:54:40 +00:00
parent 7efd1b401b
commit 06adbdcd59
5 changed files with 39 additions and 270 deletions
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49
shared/sx/ref/signals.sx
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@@ -306,28 +306,7 @@
;; ==========================================================================
;; 12. Refs — mutable boxes, no reactivity
;; ==========================================================================
;;
;; A ref is a mutable container that does NOT trigger subscriptions when
;; written. Like React's useRef: holds mutable values between renders, and
;; provides imperative DOM element access via :ref attribute.
(define ref
(fn (initial)
(dict "current" initial)))
(define ref-get
(fn (r)
(get r "current")))
(define ref-set!
(fn (r v)
(dict-set! r "current" v)))
;; ==========================================================================
;; 13. Named stores — page-level signal containers (L3)
;; 12. Named stores — page-level signal containers (L3)
;; ==========================================================================
;;
;; Stores persist across island creation/destruction. They live at page
@@ -411,7 +390,7 @@
;; ==========================================================================
;; 15. Resource — async signal with loading/resolved/error states
;; 14. Resource — async signal with loading/resolved/error states
;; ==========================================================================
;;
;; A resource wraps an async operation (fetch, computation) and exposes
@@ -440,27 +419,3 @@
state)))
;; ==========================================================================
;; 16. Transitions — non-urgent signal updates
;; ==========================================================================
;;
;; Transitions mark updates as non-urgent. The thunk's signal writes are
;; deferred to an idle callback, keeping the UI responsive during expensive
;; computations.
;;
;; (transition pending-signal thunk)
;;
;; Sets pending-signal to true, schedules thunk via requestIdleCallback
;; (or setTimeout 0 as fallback), then sets pending-signal to false when
;; the thunk completes. Signal writes inside the thunk are batched.
;;
;; Platform interface required:
;; (schedule-idle thunk) → void — requestIdleCallback or setTimeout(fn, 0)
(define transition
(fn (pending-sig thunk)
(reset! pending-sig true)
(schedule-idle
(fn ()
(batch thunk)
(reset! pending-sig false)))))