Server streams HTML shell with ~suspense placeholders immediately,
then sends resolution <script> chunks as async IO completes. Browser
renders loading skeletons instantly, replacing them with real content
as data arrives via __sxResolve().
- defpage :stream true opts pages into streaming response
- ~suspense component renders fallback with data-suspense attr
- resolve-suspense in boot.sx (spec) + bootstrapped to sx-browser.js
- __sxPending queue handles resolution before sx-browser.js loads
- execute_page_streaming() async generator with concurrent IO tasks
- Streaming demo page at /isomorphism/streaming with 1.5s simulated delay
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New /testing/ section with 6 pages: overview (all specs), evaluator,
parser, router, renderer, and runners. Each page runs tests server-side
(Python) and offers a browser "Run tests" button (JS). Modular browser
runner (sxRunModularTests) loads framework + per-spec sources from DOM.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
sx-browser.js evaluates test.sx directly in the browser — click
"Run 81 tests" to see SX test itself. Uses the same Sx global that
rendered the page.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Client caches IO results by (name + args) in memory. In-flight
promises are cached too (dedup concurrent calls for same args).
Server adds Cache-Control: public, max-age=300 for HTTP caching.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The Lambda constructor stores properties without underscore prefix,
but asyncRenderMap/asyncRenderMapIndexed accessed them with underscores.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Switch to POST with JSON body when query string exceeds 1500 chars
(highlight calls with large component sources hit URL length limits)
- Include CSRF token header on POST requests
- Add .catch() on fetch to gracefully handle network errors (return NIL)
- Upgrade async eval miss logs from logInfo to logWarn for visibility
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace hardcoded IO primitive lists on both client and server with
data-driven registration. Page registry entries carry :io-deps (list
of IO primitive names) instead of :has-io boolean. Client registers
proxied IO on demand per page via registerIoDeps(). Server builds
allowlist from component analysis.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Wire async rendering into client-side routing: pages whose component
trees reference IO primitives (highlight, current-user, etc.) now
render client-side via Promise-aware asyncRenderToDom. IO calls proxy
through /sx/io/<name> endpoint, which falls back to page helpers.
- Add has-io flag to page registry entries (helpers.py)
- Remove IO purity filter — include IO-dependent components in bundles
- Extend try-client-route with 4 paths: pure, data, IO, data+IO
- Convert tryAsyncEvalContent to callback style, add platform mapping
- IO proxy falls back to page helpers (highlight works via proxy)
- Demo page: /isomorphism/async-io with inline highlight calls
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
bindBoostForm re-reads method/action at submit time.
bind-preload-for re-reads verb-info and headers at preload time.
No closed-over stale values anywhere in the event binding system.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
All click handlers (bind-event, bindBoostLink, bindClientRouteClick)
now re-read href/verb-info from the DOM element when the click fires,
instead of using values captured at bind time. This ensures correct
behavior when DOM is replaced or attributes are morphed after binding.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Three key optimizations to the JS evaluator platform layer:
1. envMerge uses Object.create() instead of copying all keys — O(own) vs O(all)
2. renderDomComponent/renderDomElement override: imperative kwarg/attr
parsing replaces reduce+assoc pattern (no per-arg dict allocation)
3. callComponent/parseKeywordArgs override: same imperative pattern
for the eval path (not just DOM rendering)
Wire format and spec semantics unchanged — these are host-level
performance overrides in the platform JS.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Pages whose components aren't loaded client-side now fall through
to server fetch instead of silently failing in the async callback.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
handle-popstate falls back to #main-panel when no [sx-boost] element
is found, fixing back button for apps using explicit sx-target attrs.
bindClientRouteClick also checks sx-target on the link itself.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
bindClientRouteClick was calling tryClientRoute(pathname) without the
target-sel argument. This caused resolve-route-target to return nil,
so client routing ALWAYS fell back to server fetch on link clicks.
Now finds the sx-boost ancestor and passes its target selector.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The registrations were in the platform eval block which emits before
var PRIMITIVES = {}. Moved to core.list and core.dict primitive sections.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Previously these mutating operations were internal helpers in the JS
bootstrapper but not declared in primitives.sx or registered in the
Python evaluator. Now properly specced and available in both hosts.
Removes mock injections from cache tests — they use real primitives.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
boot.sx uses parse-route-pattern from router.sx, but router was only
included as an opt-in spec module. Now auto-included when boot is in
the adapter set.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Spec layer (orchestration.sx):
- try-client-route now handles :data pages instead of falling back to server
- New abstract primitive resolve-page-data(name, params, callback) — platform
decides transport (HTTP, IPC, cache, etc)
- Extracted swap-rendered-content and resolve-route-target helpers
Platform layer (bootstrap_js.py):
- resolvePageData() browser implementation: fetches /sx/data/<name>, parses
SX response, calls callback. Other hosts provide their own transport.
Server layer (pages.py):
- evaluate_page_data() evaluates :data expr, serializes result as SX
- auto_mount_page_data() mounts /sx/data/ endpoint with per-page auth
- _build_pages_sx now computes component deps for all pages (not just pure)
Test page at /isomorphism/data-test exercises the full pipeline.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
render-dom-unknown-component now calls (error ...) instead of
creating a styled div. This lets tryEvalContent catch the error
and fall back to server fetch, instead of rendering "Unknown
component: ~name" into the page.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Remove strict deps check — for case expressions like essay pages,
deps includes ALL branches but only one is taken. Instead, just
try to eval the content. If a component is missing, tryEvalContent
catches the error and we transparently fall back to server fetch.
deps field remains in registry for future prefetching use.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Each page entry now includes a deps list of component names needed.
Client checks all deps are loaded before attempting eval — if any
are missing, falls through to server fetch with a clear log message.
No bundle bloat: server sends components for the current page only.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
NIL is a frozen sentinel object ({_nil:true}) which is truthy in JS.
(not expr) compiled to !expr, so (not nil) returned false instead of
true. Fixed to compile as !isSxTruthy(expr) which correctly handles
NIL. This was preventing client-side routing from activating.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
SES lockdown may suppress console.error. Use logInfo for error
reporting since we know it works ([sx-ref] prefix visible).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Log "sx:route server fetch <url>" when falling back to network
- Use console.error for eval errors (not console.warn)
- Restructure bind-event to separate client route check from &&-chain
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
parseRoutePattern was undefined because the router module
wasn't included in the build. Now passing --spec-modules router.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The data-mount="body" script replaces the entire body content,
destroying the <script type="text/sx-pages"> tag. Moving
processPageScripts before processSxScripts ensures the page
registry is read before the body is replaced.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Server-side: log page count, output size, and first 200 chars in _build_pages_sx.
Client-side: log script tag count, text length, parsed entry count in processPageScripts.
Helps diagnose why pages: 0 routes loaded.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Shows "pages: N routes loaded" at startup and
"sx:route no match (N routes) /path" when no route matches,
so we can see if routes loaded and why matching fails.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
boot-init prints SX_VERSION (build timestamp) to console on startup.
tryClientRoute logs why it falls through: has-data, no content, eval
failed, #main-panel not found. tryEvalContent logs the actual error.
Added logWarn platform function.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
tryClientRoute now logs why it falls through: has-data, no content,
eval failed, or #main-panel not found. tryEvalContent logs the actual
error on catch. Added logWarn platform function (console.warn).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
bind-event now checks tryClientRoute before executeRequest for GET
clicks on links. Previously only boost links (inside [sx-boost]
containers) attempted client routing — explicit sx-get links like
~nav-link always hit the network. Now essay/doc nav links render
client-side when possible.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
eval-cond and process-bindings were hand-written platform JS in
bootstrap_js.py rather than specced in .sx files. This violated the
SX host architecture principle. Now specced in render.sx as shared
render adapter helpers, bootstrapped to both JS and Python.
eval-cond handles both scheme-style ((test body) ...) and clojure-style
(test body test body ...) cond clauses. Returns unevaluated body
expression for the adapter to render in its own mode.
process-bindings evaluates let-binding pairs and returns extended env.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The platform evalCond helper (used by render-to-html and render-to-dom)
only handled clojure-style (test body test body ...) but components use
scheme-style ((test body) (test body) ...). This caused "Not callable:
true" errors when rendering cond with nested clause pairs, breaking the
test dashboard and any page using scheme-style cond.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The SX parser produces native Python dicts for {:key val} syntax, but
both JSEmitter and PyEmitter had no dict case in emit() — falling through
to str(expr) which output raw AST. This broke client-side routing because
process-page-scripts used {"parsed" (parse-route-pattern ...)} and the
function call was emitted as a JS array of Symbols instead of an actual
function call.
Add _emit_native_dict() to both bootstrappers + 8 unit tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Extend the spec with IO scanning functions (scan-io-refs, transitive-io-refs,
compute-all-io-refs, component-pure?) that detect IO primitive references in
component ASTs. Components are classified as pure (no IO deps, safe for client
rendering) or IO-dependent (must expand server-side).
The partial evaluator (_aser) now uses per-component IO metadata instead of
the global _expand_components toggle: IO-dependent components expand server-
side, pure components serialize for client. Layout slot context still expands
all components for backwards compat.
Spec: 5 new functions + 2 platform interface additions in deps.sx
Host: io_refs field + is_pure property on Component, compute_all_io_refs()
Bootstrap: both sx_ref.py and sx-ref.js updated with IO functions
Bundle analyzer: shows pure/IO classification per page
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
