Remove redundant features: ref sugar, suspense, transitions
- 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:
@@ -14,7 +14,7 @@
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// =========================================================================
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var NIL = Object.freeze({ _nil: true, toString: function() { return "nil"; } });
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var SX_VERSION = "2026-03-08T16:36:52Z";
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var SX_VERSION = "2026-03-08T16:54:18Z";
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function isNil(x) { return x === NIL || x === null || x === undefined; }
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function isSxTruthy(x) { return x !== false && !isNil(x); }
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@@ -1492,7 +1492,7 @@ return result; }, args);
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return (isSxTruthy(skip) ? assoc(state, "skip", false, "i", (get(state, "i") + 1)) : (isSxTruthy((isSxTruthy((typeOf(arg) == "keyword")) && ((get(state, "i") + 1) < len(args)))) ? (function() {
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var attrName = keywordName(arg);
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var attrVal = trampoline(evalExpr(nth(args, (get(state, "i") + 1)), env));
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(isSxTruthy(sxOr(isNil(attrVal), (attrVal == false))) ? NIL : (isSxTruthy((isSxTruthy(startsWith(attrName, "on-")) && isCallable(attrVal))) ? domListen(el, slice(attrName, 3), attrVal) : (isSxTruthy((isSxTruthy((attrName == "bind")) && isSignal(attrVal))) ? bindInput(el, attrVal) : (isSxTruthy((attrName == "ref")) ? refSet_b(attrVal, el) : (isSxTruthy(contains(BOOLEAN_ATTRS, attrName)) ? (isSxTruthy(attrVal) ? domSetAttr(el, attrName, "") : NIL) : (isSxTruthy((attrVal == true)) ? domSetAttr(el, attrName, "") : domSetAttr(el, attrName, (String(attrVal)))))))));
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(isSxTruthy(sxOr(isNil(attrVal), (attrVal == false))) ? NIL : (isSxTruthy((isSxTruthy(startsWith(attrName, "on-")) && isCallable(attrVal))) ? domListen(el, slice(attrName, 3), attrVal) : (isSxTruthy((isSxTruthy((attrName == "bind")) && isSignal(attrVal))) ? bindInput(el, attrVal) : (isSxTruthy((attrName == "ref")) ? dictSet(attrVal, "current", el) : (isSxTruthy(contains(BOOLEAN_ATTRS, attrName)) ? (isSxTruthy(attrVal) ? domSetAttr(el, attrName, "") : NIL) : (isSxTruthy((attrVal == true)) ? domSetAttr(el, attrName, "") : domSetAttr(el, attrName, (String(attrVal)))))))));
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return assoc(state, "skip", true, "i", (get(state, "i") + 1));
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})() : ((isSxTruthy(!isSxTruthy(contains(VOID_ELEMENTS, tag))) ? domAppend(el, renderToDom(arg, env, newNs)) : NIL), assoc(state, "i", (get(state, "i") + 1)))));
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})(); }, {["i"]: 0, ["skip"]: false}, args);
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@@ -1546,7 +1546,7 @@ return result; }, args);
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var renderDomUnknownComponent = function(name) { return error((String("Unknown component: ") + String(name))); };
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// RENDER_DOM_FORMS
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var RENDER_DOM_FORMS = ["if", "when", "cond", "case", "let", "let*", "begin", "do", "define", "defcomp", "defisland", "defmacro", "defstyle", "defhandler", "map", "map-indexed", "filter", "for-each", "portal", "error-boundary", "suspense"];
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var RENDER_DOM_FORMS = ["if", "when", "cond", "case", "let", "let*", "begin", "do", "define", "defcomp", "defisland", "defmacro", "defstyle", "defhandler", "map", "map-indexed", "filter", "for-each", "portal", "error-boundary"];
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// render-dom-form?
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var isRenderDomForm = function(name) { return contains(RENDER_DOM_FORMS, name); };
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@@ -1604,7 +1604,7 @@ return result; }, args);
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return domAppend(frag, val);
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})(); }, coll);
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return frag;
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})() : (isSxTruthy((name == "filter")) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (isSxTruthy((name == "portal")) ? renderDomPortal(args, env, ns) : (isSxTruthy((name == "error-boundary")) ? renderDomErrorBoundary(args, env, ns) : (isSxTruthy((name == "suspense")) ? renderDomSuspense(args, env, ns) : (isSxTruthy((name == "for-each")) ? (function() {
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})() : (isSxTruthy((name == "filter")) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (isSxTruthy((name == "portal")) ? renderDomPortal(args, env, ns) : (isSxTruthy((name == "error-boundary")) ? renderDomErrorBoundary(args, env, ns) : (isSxTruthy((name == "for-each")) ? (function() {
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var f = trampoline(evalExpr(nth(expr, 1), env));
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var coll = trampoline(evalExpr(nth(expr, 2), env));
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var frag = createFragment();
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@@ -1613,7 +1613,7 @@ return result; }, args);
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return domAppend(frag, val);
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})(); } }
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return frag;
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})() : renderToDom(trampoline(evalExpr(expr, env)), env, ns))))))))))))))); };
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})() : renderToDom(trampoline(evalExpr(expr, env)), env, ns)))))))))))))); };
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// render-lambda-dom
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var renderLambdaDom = function(f, args, env, ns) { return (function() {
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@@ -1805,30 +1805,6 @@ return (boundaryDisposers = []); });
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})();
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})(); };
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// render-dom-suspense
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var renderDomSuspense = function(args, env, ns) { return (function() {
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var fallbackExpr = first(args);
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var bodyExprs = rest(args);
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var container = domCreateElement("div", NIL);
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domSetAttr(container, "data-sx-suspense", "true");
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domAppend(container, renderToDom(fallbackExpr, env, ns));
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(function() {
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var bodyDisposers = [];
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effect(function() { { var _c = bodyDisposers; for (var _i = 0; _i < _c.length; _i++) { var d = _c[_i]; d(); } }
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bodyDisposers = [];
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return tryCatch(function() { return (function() {
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var frag = createFragment();
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withIslandScope(function(disposable) { bodyDisposers.push(disposable);
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return registerInScope(disposable); }, function() { return forEach(function(child) { return domAppend(frag, renderToDom(child, env, ns)); }, bodyExprs); });
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domSetProp(container, "innerHTML", "");
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return domAppend(container, frag);
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})(); }, function(err) { return NIL; }); });
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return registerInScope(function() { { var _c = bodyDisposers; for (var _i = 0; _i < _c.length; _i++) { var d = _c[_i]; d(); } }
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return (bodyDisposers = []); });
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})();
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return container;
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})(); };
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// === Transpiled from engine ===
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@@ -3088,15 +3064,6 @@ return (isSxTruthy((_batchDepth == 0)) ? (function() {
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// register-in-scope
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var registerInScope = function(disposable) { return (isSxTruthy(_islandScope) ? _islandScope(disposable) : NIL); };
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// ref
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var ref = function(initial) { return {["current"]: initial}; };
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// ref-get
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var refGet = function(r) { return get(r, "current"); };
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// ref-set!
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var refSet_b = function(r, v) { return dictSet(r, "current", v); };
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// *store-registry*
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var _storeRegistry = {};
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@@ -3138,11 +3105,6 @@ return (isSxTruthy((_batchDepth == 0)) ? (function() {
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return state;
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})(); };
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// transition
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var transition = function(pendingSig, thunk) { reset_b(pendingSig, true);
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return scheduleIdle(function() { batch(thunk);
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return reset_b(pendingSig, false); }); };
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// =========================================================================
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// Platform interface — DOM adapter (browser-only)
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@@ -14,7 +14,7 @@
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// =========================================================================
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var NIL = Object.freeze({ _nil: true, toString: function() { return "nil"; } });
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var SX_VERSION = "2026-03-08T16:36:52Z";
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var SX_VERSION = "2026-03-08T16:54:18Z";
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function isNil(x) { return x === NIL || x === null || x === undefined; }
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function isSxTruthy(x) { return x !== false && !isNil(x); }
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@@ -1492,7 +1492,7 @@ return result; }, args);
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return (isSxTruthy(skip) ? assoc(state, "skip", false, "i", (get(state, "i") + 1)) : (isSxTruthy((isSxTruthy((typeOf(arg) == "keyword")) && ((get(state, "i") + 1) < len(args)))) ? (function() {
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var attrName = keywordName(arg);
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var attrVal = trampoline(evalExpr(nth(args, (get(state, "i") + 1)), env));
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(isSxTruthy(sxOr(isNil(attrVal), (attrVal == false))) ? NIL : (isSxTruthy((isSxTruthy(startsWith(attrName, "on-")) && isCallable(attrVal))) ? domListen(el, slice(attrName, 3), attrVal) : (isSxTruthy((isSxTruthy((attrName == "bind")) && isSignal(attrVal))) ? bindInput(el, attrVal) : (isSxTruthy((attrName == "ref")) ? refSet_b(attrVal, el) : (isSxTruthy(contains(BOOLEAN_ATTRS, attrName)) ? (isSxTruthy(attrVal) ? domSetAttr(el, attrName, "") : NIL) : (isSxTruthy((attrVal == true)) ? domSetAttr(el, attrName, "") : domSetAttr(el, attrName, (String(attrVal)))))))));
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(isSxTruthy(sxOr(isNil(attrVal), (attrVal == false))) ? NIL : (isSxTruthy((isSxTruthy(startsWith(attrName, "on-")) && isCallable(attrVal))) ? domListen(el, slice(attrName, 3), attrVal) : (isSxTruthy((isSxTruthy((attrName == "bind")) && isSignal(attrVal))) ? bindInput(el, attrVal) : (isSxTruthy((attrName == "ref")) ? dictSet(attrVal, "current", el) : (isSxTruthy(contains(BOOLEAN_ATTRS, attrName)) ? (isSxTruthy(attrVal) ? domSetAttr(el, attrName, "") : NIL) : (isSxTruthy((attrVal == true)) ? domSetAttr(el, attrName, "") : domSetAttr(el, attrName, (String(attrVal)))))))));
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return assoc(state, "skip", true, "i", (get(state, "i") + 1));
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})() : ((isSxTruthy(!isSxTruthy(contains(VOID_ELEMENTS, tag))) ? domAppend(el, renderToDom(arg, env, newNs)) : NIL), assoc(state, "i", (get(state, "i") + 1)))));
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})(); }, {["i"]: 0, ["skip"]: false}, args);
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@@ -1546,7 +1546,7 @@ return result; }, args);
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var renderDomUnknownComponent = function(name) { return error((String("Unknown component: ") + String(name))); };
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// RENDER_DOM_FORMS
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var RENDER_DOM_FORMS = ["if", "when", "cond", "case", "let", "let*", "begin", "do", "define", "defcomp", "defisland", "defmacro", "defstyle", "defhandler", "map", "map-indexed", "filter", "for-each", "portal", "error-boundary", "suspense"];
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var RENDER_DOM_FORMS = ["if", "when", "cond", "case", "let", "let*", "begin", "do", "define", "defcomp", "defisland", "defmacro", "defstyle", "defhandler", "map", "map-indexed", "filter", "for-each", "portal", "error-boundary"];
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// render-dom-form?
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var isRenderDomForm = function(name) { return contains(RENDER_DOM_FORMS, name); };
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@@ -1604,7 +1604,7 @@ return result; }, args);
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return domAppend(frag, val);
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})(); }, coll);
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return frag;
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})() : (isSxTruthy((name == "filter")) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (isSxTruthy((name == "portal")) ? renderDomPortal(args, env, ns) : (isSxTruthy((name == "error-boundary")) ? renderDomErrorBoundary(args, env, ns) : (isSxTruthy((name == "suspense")) ? renderDomSuspense(args, env, ns) : (isSxTruthy((name == "for-each")) ? (function() {
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})() : (isSxTruthy((name == "filter")) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (isSxTruthy((name == "portal")) ? renderDomPortal(args, env, ns) : (isSxTruthy((name == "error-boundary")) ? renderDomErrorBoundary(args, env, ns) : (isSxTruthy((name == "for-each")) ? (function() {
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var f = trampoline(evalExpr(nth(expr, 1), env));
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var coll = trampoline(evalExpr(nth(expr, 2), env));
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var frag = createFragment();
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@@ -1613,7 +1613,7 @@ return result; }, args);
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return domAppend(frag, val);
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})(); } }
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return frag;
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})() : renderToDom(trampoline(evalExpr(expr, env)), env, ns))))))))))))))); };
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})() : renderToDom(trampoline(evalExpr(expr, env)), env, ns)))))))))))))); };
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// render-lambda-dom
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var renderLambdaDom = function(f, args, env, ns) { return (function() {
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@@ -1805,30 +1805,6 @@ return (boundaryDisposers = []); });
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})();
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})(); };
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// render-dom-suspense
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var renderDomSuspense = function(args, env, ns) { return (function() {
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var fallbackExpr = first(args);
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var bodyExprs = rest(args);
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var container = domCreateElement("div", NIL);
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domSetAttr(container, "data-sx-suspense", "true");
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domAppend(container, renderToDom(fallbackExpr, env, ns));
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(function() {
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var bodyDisposers = [];
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effect(function() { { var _c = bodyDisposers; for (var _i = 0; _i < _c.length; _i++) { var d = _c[_i]; d(); } }
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bodyDisposers = [];
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return tryCatch(function() { return (function() {
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var frag = createFragment();
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withIslandScope(function(disposable) { bodyDisposers.push(disposable);
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return registerInScope(disposable); }, function() { return forEach(function(child) { return domAppend(frag, renderToDom(child, env, ns)); }, bodyExprs); });
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domSetProp(container, "innerHTML", "");
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return domAppend(container, frag);
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})(); }, function(err) { return NIL; }); });
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return registerInScope(function() { { var _c = bodyDisposers; for (var _i = 0; _i < _c.length; _i++) { var d = _c[_i]; d(); } }
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return (bodyDisposers = []); });
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})();
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return container;
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})(); };
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// === Transpiled from engine ===
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@@ -3088,15 +3064,6 @@ return (isSxTruthy((_batchDepth == 0)) ? (function() {
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// register-in-scope
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var registerInScope = function(disposable) { return (isSxTruthy(_islandScope) ? _islandScope(disposable) : NIL); };
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// ref
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var ref = function(initial) { return {["current"]: initial}; };
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// ref-get
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var refGet = function(r) { return get(r, "current"); };
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// ref-set!
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var refSet_b = function(r, v) { return dictSet(r, "current", v); };
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// *store-registry*
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var _storeRegistry = {};
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@@ -3138,11 +3105,6 @@ return (isSxTruthy((_batchDepth == 0)) ? (function() {
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return state;
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})(); };
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// transition
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var transition = function(pendingSig, thunk) { reset_b(pendingSig, true);
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return scheduleIdle(function() { batch(thunk);
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return reset_b(pendingSig, false); }); };
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// =========================================================================
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// Platform interface — DOM adapter (browser-only)
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@@ -187,7 +187,7 @@
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(bind-input el attr-val)
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;; ref: set ref.current to this element
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(= attr-name "ref")
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(ref-set! attr-val el)
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(dict-set! attr-val "current" el)
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;; Boolean attr
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(contains? BOOLEAN_ATTRS attr-name)
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(when attr-val (dom-set-attr el attr-name ""))
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@@ -310,7 +310,7 @@
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(list "if" "when" "cond" "case" "let" "let*" "begin" "do"
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"define" "defcomp" "defisland" "defmacro" "defstyle" "defhandler"
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"map" "map-indexed" "filter" "for-each" "portal"
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"error-boundary" "suspense"))
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"error-boundary"))
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(define render-dom-form?
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(fn (name)
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@@ -435,10 +435,6 @@
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(= name "error-boundary")
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(render-dom-error-boundary args env ns)
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;; suspense — show fallback while resource is loading
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(= name "suspense")
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(render-dom-suspense args env ns)
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;; for-each (render variant)
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(= name "for-each")
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(let ((f (trampoline (eval-expr (nth expr 1) env)))
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@@ -828,66 +824,6 @@
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container))))
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;; --------------------------------------------------------------------------
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;; render-dom-suspense — show fallback while resource is loading
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;; --------------------------------------------------------------------------
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;;
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;; (suspense fallback-expr body...)
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;;
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;; Renders fallback-expr initially. When used with a resource signal,
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;; an effect watches the resource state and swaps in the body content
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;; once loading is complete. If the resource errors, renders the error.
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;;
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;; The simplest pattern: wrap a resource deref in suspense.
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;;
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;; (suspense
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;; (div "Loading...")
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;; (let ((data (get (deref user-resource) "data")))
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;; (div (get data "name"))))
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(define render-dom-suspense
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(fn (args env ns)
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(let ((fallback-expr (first args))
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(body-exprs (rest args))
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(container (dom-create-element "div" nil)))
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(dom-set-attr container "data-sx-suspense" "true")
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;; Render fallback immediately
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(dom-append container (render-to-dom fallback-expr env ns))
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;; Try to render body — if it works, replace fallback
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;; The body typically derefs a resource signal, which triggers
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;; an effect that re-renders when the resource resolves
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(let ((body-disposers (list)))
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(effect (fn ()
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;; Dispose previous body renders
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(for-each (fn (d) (d)) body-disposers)
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(set! body-disposers (list))
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;; Try rendering the body
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(try-catch
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(fn ()
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(let ((frag (create-fragment)))
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(with-island-scope
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(fn (disposable)
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(append! body-disposers disposable)
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(register-in-scope disposable))
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(fn ()
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(for-each
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(fn (child)
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(dom-append frag (render-to-dom child env ns)))
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body-exprs)))
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;; Success — replace container content with body
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(dom-set-prop container "innerHTML" "")
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(dom-append container frag)))
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(fn (err)
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;; Body threw — keep showing fallback (or show error)
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nil))))
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;; Register cleanup
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(register-in-scope
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(fn ()
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(for-each (fn (d) (d)) body-disposers)
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(set! body-disposers (list)))))
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container)))
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;; --------------------------------------------------------------------------
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;; Platform interface — DOM adapter
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;; --------------------------------------------------------------------------
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@@ -944,7 +880,6 @@
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;; From signals.sx:
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;; signal, deref, reset!, swap!, computed, effect, batch
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;; signal?, with-island-scope, register-in-scope
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;; ref, ref-get, ref-set!
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;;
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;; Pure primitives used:
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;; keys, get, str
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@@ -306,28 +306,7 @@
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;; ==========================================================================
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;; 12. Refs — mutable boxes, no reactivity
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;; ==========================================================================
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;;
|
||||
;; 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)))))
|
||||
|
||||
@@ -137,10 +137,6 @@
|
||||
(td :class "px-3 py-2 text-stone-700" "Keyed reconciliation")
|
||||
(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: :key attr, extract-key"))
|
||||
(tr :class "border-b border-stone-100"
|
||||
(td :class "px-3 py-2 text-stone-700" "Refs")
|
||||
(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: ref, ref-get, ref-set!, :ref attr"))
|
||||
(tr :class "border-b border-stone-100"
|
||||
(td :class "px-3 py-2 text-stone-700" "Portals")
|
||||
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
|
||||
@@ -155,13 +151,13 @@
|
||||
(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"))
|
||||
(td :class "px-3 py-2 text-stone-700" "Suspense")
|
||||
(td :class "px-3 py-2 text-stone-500 font-medium" "N/A")
|
||||
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "covered by existing primitives"))
|
||||
(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"))))))))
|
||||
(td :class "px-3 py-2 text-stone-500 font-medium" "N/A")
|
||||
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "covered by existing primitives"))))))))
|
||||
|
||||
;; ---------------------------------------------------------------------------
|
||||
;; Live demo islands
|
||||
@@ -308,27 +304,7 @@
|
||||
(p :class "text-sm text-green-700" "Thanks for agreeing!")))))
|
||||
|
||||
|
||||
;; 7. Refs — mutable boxes + DOM element access
|
||||
(defisland ~demo-refs ()
|
||||
(let ((input-ref (ref nil))
|
||||
(count (signal 0)))
|
||||
(div :class "rounded border border-violet-200 bg-violet-50 p-4 my-4 space-y-3"
|
||||
(div :class "flex items-center gap-3"
|
||||
(input :type "text" :ref input-ref
|
||||
:placeholder "Focus me with the button..."
|
||||
:class "px-3 py-1.5 rounded border border-stone-300 text-sm focus:outline-none focus:border-violet-400 w-48")
|
||||
(button :class "px-3 py-1 rounded bg-violet-600 text-white text-sm font-medium hover:bg-violet-700"
|
||||
:on-click (fn (e)
|
||||
(do
|
||||
(dom-focus (ref-get input-ref))
|
||||
(swap! count inc)))
|
||||
"Focus Input")
|
||||
(span :class "text-sm text-stone-500"
|
||||
"Focused " (deref count) " times"))
|
||||
(p :class "text-xs text-stone-400"
|
||||
"The ref holds a mutable reference to the input element. Clicking the button calls focus() imperatively — no signal needed."))))
|
||||
|
||||
;; 8. Portal — render into a remote DOM target
|
||||
;; 7. Portal — render into a remote DOM target
|
||||
(defisland ~demo-portal ()
|
||||
(let ((open? (signal false)))
|
||||
(div :class "rounded border border-violet-200 bg-violet-50 p-4 my-4"
|
||||
@@ -396,30 +372,24 @@
|
||||
(~doc-code :code (highlight "(defisland ~demo-input-binding ()\n (let ((name (signal \"\"))\n (agreed (signal false)))\n (div\n (input :type \"text\" :bind name\n :placeholder \"Type your name...\")\n (span \"Hello, \" (strong (deref name)) \"!\")\n (input :type \"checkbox\" :bind agreed)\n (when (deref agreed)\n (p \"Thanks for agreeing!\")))))" "lisp"))
|
||||
(p (code ":bind") " detects the element type automatically — text inputs use " (code "value") " + " (code "input") " event, checkboxes use " (code "checked") " + " (code "change") " event. The effect only updates the DOM when the value actually changed, preventing cursor jump."))
|
||||
|
||||
(~doc-section :title "7. Refs" :id "demo-refs"
|
||||
(p "A " (code "ref") " is a mutable box that does " (em "not") " trigger reactivity. Like React's " (code "useRef") " — holds values between renders and provides imperative DOM access via " (code ":ref") " attribute.")
|
||||
(~demo-refs)
|
||||
(~doc-code :code (highlight "(defisland ~demo-refs ()\n (let ((input-ref (ref nil))\n (count (signal 0)))\n (div\n (input :type \"text\" :ref input-ref\n :placeholder \"Focus me with the button...\")\n (button :on-click (fn (e)\n (do\n (dom-focus (ref-get input-ref))\n (swap! count inc)))\n \"Focus Input\")\n (span \"Focused \" (deref count) \" times\"))))" "lisp"))
|
||||
(p (code ":ref") " on an element sets " (code "ref.current") " to the DOM node after rendering. " (code "ref-get") " and " (code "ref-set!") " are non-reactive — writing to a ref doesn't trigger effects. Use refs for focus management, animations, canvas contexts, and anything requiring imperative DOM access."))
|
||||
|
||||
(~doc-section :title "8. Portals" :id "demo-portal"
|
||||
(~doc-section :title "7. Portals" :id "demo-portal"
|
||||
(p "A " (code "portal") " renders children into a DOM node " (em "outside") " the island's subtree. Essential for modals, tooltips, and toasts — anything that must escape " (code "overflow:hidden") " or z-index stacking.")
|
||||
(~demo-portal)
|
||||
(~doc-code :code (highlight "(defisland ~demo-portal ()\n (let ((open? (signal false)))\n (div\n (button :on-click (fn (e) (swap! open? not))\n (if (deref open?) \"Close Modal\" \"Open Modal\"))\n (portal \"#portal-root\"\n (when (deref open?)\n (div :class \"fixed inset-0 bg-black/50 ...\"\n :on-click (fn (e) (reset! open? false))\n (div :class \"bg-white rounded-lg p-6 ...\"\n :on-click (fn (e) (stop-propagation e))\n (h2 \"Portal Modal\")\n (p \"Rendered outside the island's DOM.\")\n (button :on-click (fn (e) (reset! open? false))\n \"Close\"))))))))" "lisp"))
|
||||
(p "The portal content lives in " (code "#portal-root") " (typically at the page body level), not inside the island. On island disposal, portal content is automatically removed from its target — the " (code "register-in-scope") " mechanism handles cleanup."))
|
||||
|
||||
(~doc-section :title "9. How defisland Works" :id "how-defisland"
|
||||
(~doc-section :title "8. How defisland Works" :id "how-defisland"
|
||||
(p (code "defisland") " creates a reactive component. Same calling convention as " (code "defcomp") " — keyword args, rest children — but with a reactive boundary. Inside an island, " (code "deref") " subscribes DOM nodes to signals.")
|
||||
(~doc-code :code (highlight ";; Definition — same syntax as defcomp\n(defisland ~counter (&key initial)\n (let ((count (signal (or initial 0))))\n (div\n (span (deref count)) ;; reactive text node\n (button :on-click (fn (e) (swap! count inc)) ;; event handler\n \"+\"))))\n\n;; Usage — same as any component\n(~counter :initial 42)\n\n;; Server-side rendering:\n;; <div data-sx-island=\"counter\" data-sx-state='{\"initial\":42}'>\n;; <span>42</span><button>+</button>\n;; </div>\n;;\n;; Client hydrates: signals + effects + event handlers attach" "lisp"))
|
||||
(p "Each " (code "deref") " call registers the enclosing DOM node as a subscriber. Signal changes update " (em "only") " the subscribed nodes — no virtual DOM, no diffing, no component re-renders."))
|
||||
|
||||
(~doc-section :title "10. Test suite" :id "demo-tests"
|
||||
(~doc-section :title "9. Test suite" :id "demo-tests"
|
||||
(p "17 tests verify the signal runtime against the spec. All pass in the Python test runner (which uses the hand-written evaluator with native platform primitives).")
|
||||
(~doc-code :code (highlight ";; Signal basics (6 tests)\n(assert-true (signal? (signal 42)))\n(assert-equal 42 (deref (signal 42)))\n(assert-equal 5 (deref 5)) ;; non-signal passthrough\n\n;; reset! changes value\n(let ((s (signal 0)))\n (reset! s 10)\n (assert-equal 10 (deref s)))\n\n;; reset! does NOT notify when value unchanged (identical? check)\n\n;; Computed (3 tests)\n(let ((a (signal 3)) (b (signal 4))\n (sum (computed (fn () (+ (deref a) (deref b))))))\n (assert-equal 7 (deref sum))\n (reset! a 10)\n (assert-equal 14 (deref sum)))\n\n;; Effects (4 tests) — immediate run, re-run on change, dispose, cleanup\n;; Batch (1 test) — defers notifications, deduplicates subscribers\n;; defisland (3 tests) — creates island, callable, accepts children" "lisp"))
|
||||
(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 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 "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, portals, error boundaries, and resource.")
|
||||
(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."))))
|
||||
|
||||
|
||||
@@ -665,17 +635,21 @@
|
||||
(td :class "px-3 py-2 text-green-700 font-medium" "Done")
|
||||
(td :class "px-3 py-2 text-stone-700" "adapter-dom.sx: :bind signal, :key attr"))
|
||||
(tr :class "border-b border-stone-100"
|
||||
(td :class "px-3 py-2 text-stone-700" "Refs + portals")
|
||||
(td :class "px-3 py-2 text-stone-700" "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"))
|
||||
(td :class "px-3 py-2 text-stone-700" "adapter-dom.sx: portal render-dom form"))
|
||||
(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-stone-700" "Error boundaries")
|
||||
(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"))
|
||||
(td :class "px-3 py-2 text-stone-700" "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")
|
||||
(td :class "px-3 py-2 text-stone-500 font-medium" "N/A")
|
||||
(td :class "px-3 py-2 text-stone-700" "covered by existing primitives"))
|
||||
(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 text-stone-700" "signals.sx: transition, schedule-idle"))))))
|
||||
(td :class "px-3 py-2 text-stone-500 font-medium" "N/A")
|
||||
(td :class "px-3 py-2 text-stone-700" "covered by existing primitives"))))))
|
||||
|
||||
(~doc-section :title "Design Principles" :id "principles"
|
||||
(ol :class "space-y-3 text-stone-600 list-decimal list-inside"
|
||||
@@ -718,11 +692,6 @@
|
||||
(td :class "px-3 py-2 text-stone-500 text-xs" "key prop")
|
||||
(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" "Refs")
|
||||
(td :class "px-3 py-2 text-stone-500 text-xs" "useRef")
|
||||
(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"))
|
||||
(tr :class "border-b border-stone-100"
|
||||
(td :class "px-3 py-2 text-stone-700" "Portals")
|
||||
(td :class "px-3 py-2 text-stone-500 text-xs" "createPortal")
|
||||
@@ -736,13 +705,13 @@
|
||||
(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-green-700 font-medium" "Done")
|
||||
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "adapter-dom.sx, signals.sx"))
|
||||
(td :class "px-3 py-2 text-stone-500 font-medium" "N/A")
|
||||
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "covered by existing primitives"))
|
||||
(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-green-700 font-medium" "Done")
|
||||
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "signals.sx"))))))
|
||||
(td :class "px-3 py-2 text-stone-500 font-medium" "N/A")
|
||||
(td :class "px-3 py-2 font-mono text-xs text-stone-500" "covered by existing primitives"))))))
|
||||
|
||||
;; -----------------------------------------------------------------------
|
||||
;; P0 — must have
|
||||
@@ -802,17 +771,6 @@
|
||||
;; P1 — important
|
||||
;; -----------------------------------------------------------------------
|
||||
|
||||
(~doc-section :title "P1: Refs" :id "refs"
|
||||
(p "A ref is a mutable container that does " (em "not") " trigger reactivity when written. React's " (code "useRef") " is used for two things: holding mutable values between renders, and accessing DOM elements imperatively.")
|
||||
|
||||
(~doc-subsection :title "Design"
|
||||
(~doc-code :code (highlight ";; ref — mutable box, no reactivity\n(define ref\n (fn (initial)\n (dict \"current\" initial)))\n\n(define ref-get (fn (r) (get r \"current\")))\n(define ref-set! (fn (r v) (dict-set! r \"current\" v)))\n\n;; Usage: holding mutable state without triggering effects\n(defisland ~canvas-demo ()\n (let ((frame-id (ref nil))\n (ctx (ref nil)))\n ;; Attach to canvas element via :ref\n (canvas :ref ctx :width 400 :height 300)\n ;; frame-id changes don't trigger re-renders\n (effect (fn ()\n (when (ref-get ctx)\n (draw-frame (ref-get ctx))\n (ref-set! frame-id\n (request-animation-frame\n (fn () (draw-frame (ref-get ctx))))))))))" "lisp"))
|
||||
|
||||
(p "Two features:")
|
||||
(ol :class "space-y-1 text-stone-600 list-decimal list-inside text-sm"
|
||||
(li (strong "Mutable box: ") (code "ref") " / " (code "ref-get") " / " (code "ref-set!") " — trivial, just a dict wrapper. Spec in " (code "signals.sx") ".")
|
||||
(li (strong "DOM ref attribute: ") (code ":ref") " on an element sets " (code "ref.current") " to the DOM node after rendering. Spec in " (code "adapter-dom.sx") " — during element creation, if " (code ":ref") " is present, call " (code "(ref-set! r el)") "."))))
|
||||
|
||||
(~doc-section :title "P1: Portals" :id "portals"
|
||||
(p "A portal renders children into a DOM node " (em "outside") " the island's subtree. Essential for modals, tooltips, dropdown menus, and toast notifications — anything that must escape overflow:hidden, z-index stacking, or layout constraints.")
|
||||
|
||||
@@ -880,11 +838,8 @@
|
||||
(ol :class "space-y-3 text-stone-600 list-decimal list-inside"
|
||||
(li (strong "Input binding") " (P0) — unlocks forms. Smallest change, biggest impact. One new function in adapter-dom.sx, two platform primitives (" (code "dom-set-prop") ", " (code "dom-get-prop") "). Add to demo page immediately.")
|
||||
(li (strong "Keyed reconciliation") " (P0) — unlocks efficient dynamic lists. Replace reactive-list's effect body. Add " (code ":key") " extraction. No new primitives needed.")
|
||||
(li (strong "Refs") " (P1) — trivial: three functions in signals.sx + one attr handler. Unlocks canvas, focus management, animation frame patterns.")
|
||||
(li (strong "Portals") " (P1) — one new render-dom form. Needs disposal integration. Unlocks modals, tooltips, toasts.")
|
||||
(li (strong "Error boundaries") " (P2) — one new render-dom form with try/catch. Independent of everything else.")
|
||||
(li (strong "Suspense + resource") " (P2) — new signal variant + render-dom form. Needs promise platform primitives. Builds on error boundaries for the error case.")
|
||||
(li (strong "Transitions") " (P2) — scheduling primitive + signal batching variant. Lowest priority — SX's fine-grained model already avoids most jank."))
|
||||
(li (strong "Error boundaries") " (P2) — one new render-dom form with try/catch. Independent of everything else."))
|
||||
|
||||
(p :class "mt-4 text-stone-600" "Every feature follows the same pattern: spec in " (code ".sx") " → bootstrap to JS/Python → add platform primitives → add demo island. No feature requires changes to the signal runtime, the evaluator, or the rendering pipeline. They are all additive."))
|
||||
|
||||
|
||||
Reference in New Issue
Block a user