1.2 1.3
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343
sigpro v1.3.js
Normal file
343
sigpro v1.3.js
Normal file
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/** SigPro (Signals & Proxies) */
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// Helpers
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const doc = typeof document !== "undefined" ? document : null;
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const isArr = Array.isArray, isFunc = f => typeof f === "function", isObj = o => o && typeof o === "object";
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const ensureNode = n => n?._isRuntime ? n.container : (n instanceof Node ? n : doc.createTextNode(n == null ? "" : String(n)));
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let activeEffect = null, activeOwner = null, isFlushing = false;
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const effectQueue = new Set(), MOUNTED_NODES = new WeakMap();
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const dispose = eff => {
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if (!eff || eff._disposed) return;
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eff._disposed = true;
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const stack = [eff];
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while (stack.length) {
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const e = stack.pop();
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if (e._cleanups) { e._cleanups.forEach(fn => fn()); e._cleanups.clear(); }
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if (e._children) { e._children.forEach(child => stack.push(child)); e._children.clear(); }
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if (e._deps) { e._deps.forEach(depSet => depSet.delete(e)); e._deps.clear(); }
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}
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};
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export const onUnmount = fn => {
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if (activeOwner) (activeOwner._cleanups ||= new Set()).add(fn);
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};
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// Effect creation
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const createEffect = (fn, isComputed = false) => {
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const effect = () => {
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if (effect._disposed) return;
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if (effect._deps) effect._deps.forEach(depSet => depSet.delete(effect));
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if (effect._cleanups) { effect._cleanups.forEach(cl => cl()); effect._cleanups.clear(); }
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const prevEffect = activeEffect, prevOwner = activeOwner;
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activeEffect = activeOwner = effect;
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try { return isComputed ? fn() : (fn(), undefined); }
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finally { activeEffect = prevEffect; activeOwner = prevOwner; }
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};
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effect._deps = effect._cleanups = effect._children = null;
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effect._disposed = false;
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effect._isComputed = isComputed;
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effect._depth = activeEffect ? activeEffect._depth + 1 : 0;
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effect._mounts = [];
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effect._parent = activeOwner;
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effect._provisions = activeOwner ? { ...activeOwner._provisions } : {};
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if (activeOwner) (activeOwner._children ||= new Set()).add(effect);
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return effect;
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};
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const flush = () => {
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if (isFlushing) return;
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isFlushing = true;
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const sorted = Array.from(effectQueue).sort((a, b) => a._depth - b._depth);
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effectQueue.clear();
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for (const e of sorted) if (!e._disposed) e();
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isFlushing = false;
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};
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const trackUpdate = (subs, trigger = false) => {
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if (!trigger && activeEffect && !activeEffect._disposed) {
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subs.add(activeEffect);
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(activeEffect._deps ||= new Set()).add(subs);
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} else if (trigger) {
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let hasQueue = false;
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subs.forEach(e => {
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if (e === activeEffect || e._disposed) return;
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if (e._isComputed) {
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e._dirty = true;
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if (e._subs) trackUpdate(e._subs, true);
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} else {
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effectQueue.add(e);
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hasQueue = true;
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}
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});
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if (hasQueue && !isFlushing) queueMicrotask(flush);
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}
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};
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export const untrack = fn => { const p = activeEffect; activeEffect = null; try { return fn(); } finally { activeEffect = p; } };
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export const onMount = fn => {
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if (activeOwner) (activeOwner._mounts ||= []).push(fn);
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};
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// Reactive state
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export const $ = (val, key = null) => {
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const subs = new Set();
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if (isFunc(val)) {
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let cache, dirty = true;
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const computed = () => {
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if (dirty) {
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const prev = activeEffect;
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activeEffect = computed;
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try {
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const next = val();
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if (!Object.is(cache, next)) { cache = next; dirty = false; trackUpdate(subs, true); }
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} finally { activeEffect = prev; }
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}
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trackUpdate(subs);
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return cache;
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};
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computed._isComputed = true;
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computed._subs = subs;
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computed._dirty = true;
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computed._deps = null;
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computed._disposed = false;
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computed.markDirty = () => { dirty = true; };
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computed.stop = () => {
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computed._disposed = true;
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if (computed._deps) { computed._deps.forEach(depSet => depSet.delete(computed)); computed._deps.clear(); }
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subs.clear();
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};
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onUnmount(computed.stop);
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return computed;
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}
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if (key) try { val = JSON.parse(localStorage.getItem(key)) ?? val; } catch (e) { }
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return (...args) => {
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if (args.length) {
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const next = isFunc(args[0]) ? args[0](val) : args[0];
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if (!Object.is(val, next)) { val = next; if (key) localStorage.setItem(key, JSON.stringify(val)); trackUpdate(subs, true); }
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}
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trackUpdate(subs);
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return val;
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};
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};
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export const $$ = (obj, cache = new WeakMap()) => {
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if (!isObj(obj)) return obj;
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if (cache.has(obj)) return cache.get(obj);
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const subs = {};
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const proxy = new Proxy(obj, {
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get: (t, k) => { trackUpdate(subs[k] ??= new Set()); return isObj(t[k]) ? $$(t[k], cache) : t[k]; },
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set: (t, k, v) => { if (!Object.is(t[k], v)) { t[k] = v; if (subs[k]) trackUpdate(subs[k], true); } return true; }
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});
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cache.set(obj, proxy);
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return proxy;
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};
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// Watcher
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export const Watch = (target, cb) => {
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const explicit = isArr(target);
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const effect = createEffect(() => explicit ? (untrack(cb), target.forEach(d => isFunc(d) && d())) : cb());
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effect();
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return () => dispose(effect);
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};
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const cleanupNode = node => {
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if (node._cleanups) { node._cleanups.forEach(fn => fn()); node._cleanups.clear(); }
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if (node._ownerEffect) dispose(node._ownerEffect);
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if (node.childNodes) node.childNodes.forEach(cleanupNode);
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};
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// provide/inject
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export const provide = (key, value) => {
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if (activeOwner) activeOwner._provisions[key] = value;
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};
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export const inject = (key, defaultValue) => {
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let ctx = activeOwner;
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while (ctx) {
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if (key in ctx._provisions) return ctx._provisions[key];
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ctx = ctx._parent;
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}
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return defaultValue;
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};
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// CreateElement
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export const Tag = (tag, props = {}, children = []) => {
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if (props instanceof Node || isArr(props) || !isObj(props)) { children = props; props = {}; }
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const isSVG = /^(svg|path|circle|rect|line|polyline|polygon|g|defs|text|tspan|use)$/.test(tag);
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const el = isSVG ? doc.createElementNS("http://www.w3.org/2000/svg", tag) : doc.createElement(tag);
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el._cleanups = new Set();
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for (let [k, v] of Object.entries(props)) {
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if (k === "ref") { isFunc(v) ? v(el) : (v.current = el); continue; }
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if (k.startsWith("on")) {
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const ev = k.slice(2).toLowerCase();
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el.addEventListener(ev, v);
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const off = () => el.removeEventListener(ev, v);
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el._cleanups.add(off);
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onUnmount(off);
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} else if (isFunc(v)) {
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const effect = createEffect(() => {
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const val = v();
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const safe = (k === 'src' || k === 'href') && String(val).includes('javascript:') ? '#' : val;
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if (k === "class") el.className = safe || "";
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else if (safe == null || safe === false) el.removeAttribute(k);
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else el.setAttribute(k, safe === true ? "" : safe);
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});
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effect();
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el._cleanups.add(() => dispose(effect));
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onUnmount(() => dispose(effect));
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if (/^(INPUT|TEXTAREA|SELECT)$/.test(el.tagName) && (k === "value" || k === "checked")) {
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const evType = k === "checked" ? "change" : "input";
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el.addEventListener(evType, ev => v(ev.target[k]));
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}
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} else el.setAttribute(k, v);
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}
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const append = c => {
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if (isArr(c)) return c.forEach(append);
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if (isFunc(c)) {
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const anchor = doc.createTextNode("");
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el.appendChild(anchor);
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let currentNodes = [];
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const effect = createEffect(() => {
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const res = c();
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const next = (isArr(res) ? res : [res]).map(ensureNode);
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currentNodes.forEach(n => { if (n._isRuntime) n.destroy(); else cleanupNode(n); });
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let ref = anchor;
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for (let i = next.length - 1; i >= 0; i--) {
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const node = next[i];
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if (node.parentNode !== ref.parentNode) ref.parentNode?.insertBefore(node, ref);
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if (node._mounts) node._mounts.forEach(fn => fn());
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ref = node;
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}
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currentNodes = next;
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});
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effect();
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el._cleanups.add(() => dispose(effect));
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onUnmount(() => dispose(effect));
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} else {
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const node = ensureNode(c);
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el.appendChild(node);
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if (node._mounts) node._mounts.forEach(fn => fn());
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}
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};
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append(children);
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return el;
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};
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// Render
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export const Render = fn => {
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const container = doc.createElement("div");
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container.style.display = "contents";
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const rootEffect = createEffect(() => {
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const res = fn({ onCleanup: onUnmount });
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(isArr(res) ? res : [res]).forEach(r => container.appendChild(ensureNode(r)));
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});
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rootEffect();
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rootEffect._mounts?.forEach(fn => fn());
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return { _isRuntime: true, container, destroy: () => { dispose(rootEffect); container.remove(); } };
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};
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// If
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export const If = (cond, t, f = null, trans = null) => {
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const anchor = doc.createTextNode("");
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const root = Tag("div", { style: "display:contents" }, [anchor]);
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let currentView = null, last = null;
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Watch(() => {
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const show = !!(isFunc(cond) ? cond() : cond);
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if (show === last) return;
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last = show;
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const disposeView = () => { if (currentView) { currentView.destroy(); currentView = null; } };
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if (currentView && !show && trans?.out) trans.out(currentView.container, disposeView);
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else disposeView();
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const content = show ? t : f;
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if (content) {
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currentView = Render(() => isFunc(content) ? content() : content);
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root.insertBefore(currentView.container, anchor);
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if (trans?.in) trans.in(currentView.container);
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}
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});
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return root;
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};
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// For
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export const For = (src, itemFn, keyFn) => {
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const anchor = doc.createTextNode("");
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const root = Tag("div", { style: "display:contents" }, [anchor]);
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let cache = new Map();
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Watch(() => {
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const items = (isFunc(src) ? src() : src) || [];
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const next = new Map(), order = [];
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for (let i = 0; i < items.length; i++) {
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const item = items[i];
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const key = keyFn ? keyFn(item, i) : i;
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let view = cache.get(key);
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if (!view) view = Render(() => itemFn(item, i));
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next.set(key, view);
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order.push(key);
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cache.delete(key);
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}
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cache.forEach(v => v.destroy());
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cache = next;
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let ref = anchor;
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for (let i = order.length - 1; i >= 0; i--) {
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const view = next.get(order[i]);
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if (view.container.nextSibling !== ref) root.insertBefore(view.container, ref);
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ref = view.container;
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}
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});
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return root;
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};
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// Router
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export const Router = routes => {
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const getHash = () => window.location.hash.slice(1) || "/";
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const path = $(getHash());
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const handler = () => path(getHash());
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window.addEventListener("hashchange", handler);
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onUnmount(() => window.removeEventListener("hashchange", handler));
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const outlet = Tag("div", { class: "router-outlet" });
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let currentView = null;
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Watch([path], () => {
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const cur = path();
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const route = routes.find(r => {
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const p1 = r.path.split("/").filter(Boolean);
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const p2 = cur.split("/").filter(Boolean);
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return p1.length === p2.length && p1.every((p, i) => p[0] === ":" || p === p2[i]);
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}) || routes.find(r => r.path === "*");
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if (route) {
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currentView?.destroy();
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const params = {};
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route.path.split("/").filter(Boolean).forEach((p, i) => { if (p[0] === ":") params[p.slice(1)] = cur.split("/").filter(Boolean)[i]; });
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Router.params(params);
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currentView = Render(() => isFunc(route.component) ? route.component(params) : route.component);
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outlet.replaceChildren(currentView.container);
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}
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});
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return outlet;
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};
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Router.params = $({});
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Router.to = p => window.location.hash = p.replace(/^#?\/?/, "#/");
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Router.back = () => window.history.back();
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Router.path = () => window.location.hash.replace(/^#/, "") || "/";
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// Mount
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export const Mount = (comp, target) => {
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const t = typeof target === "string" ? doc.querySelector(target) : target;
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if (!t) return;
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if (MOUNTED_NODES.has(t)) MOUNTED_NODES.get(t).destroy();
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const inst = Render(isFunc(comp) ? comp : () => comp);
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t.replaceChildren(inst.container);
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MOUNTED_NODES.set(t, inst);
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return inst;
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};
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const SigPro = Object.freeze({ $, $$, Watch, Tag, Render, If, For, Router, Mount, untrack, onMount, onUnmount, provide, inject });
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export const initDX = () => {
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if (typeof window === "undefined") return;
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Object.assign(window, SigPro);
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"div span p h1 h2 h3 h4 h5 h6 br hr section article aside nav main header footer ul ol li a em strong pre code form label input textarea select button img svg"
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.split(" ").forEach(t => window[t[0].toUpperCase() + t.slice(1)] = (p, c) => SigPro.Tag(t, p, c));
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};
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