453 lines
14 KiB
JavaScript
453 lines
14 KiB
JavaScript
// SigPro.ts - Versión simplificada (sin If/For) y tipada
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type EffectFn = {
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(): void;
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_deps: Set<Set<EffectFn>>;
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_deleted?: boolean;
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_isComputed?: boolean;
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_subs?: Set<EffectFn>;
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depth?: number;
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stop?: () => void;
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_cleanups?: Set<() => void>;
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};
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type Owner = { cleanups: Set<() => void> } | null;
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type Signal<T> = {
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(): T;
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(next: T | ((prev: T) => T)): T;
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_isSignal?: boolean;
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};
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type ComputedSignal<T> = Signal<T> & { stop: () => void };
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type Runtime = {
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_isRuntime: true;
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container: HTMLElement;
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destroy: () => void;
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};
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type Component = (props?: Record<string, any>, children?: any[]) => any;
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type TagFunction = (props?: any, children?: any) => HTMLElement;
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// --- Estado interno ---
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let activeEffect: EffectFn | null = null;
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let currentOwner: Owner = null;
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const effectQueue = new Set<EffectFn>();
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let isFlushing = false;
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const MOUNTED_NODES = new WeakMap<Element, Runtime>();
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// --- Helpers ---
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const doc = document;
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const isArr = Array.isArray;
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const assign = Object.assign;
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const createEl = (t: string) => doc.createElement(t);
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const createText = (t: any) => doc.createTextNode(String(t ?? ""));
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const isFunc = (f: any): f is Function => typeof f === "function";
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const isObj = (o: any): o is object => typeof o === "object" && o !== null;
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const runWithContext = <T>(effect: EffectFn | null, callback: () => T): T => {
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const prev = activeEffect;
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activeEffect = effect;
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try {
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return callback();
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} finally {
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activeEffect = prev;
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}
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};
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const cleanupNode = (node: Node) => {
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if ((node as any)._cleanups) {
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(node as any)._cleanups.forEach((dispose: () => void) => dispose());
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(node as any)._cleanups.clear();
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}
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node.childNodes?.forEach(cleanupNode);
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};
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const flushEffects = () => {
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if (isFlushing) return;
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isFlushing = true;
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while (effectQueue.size) {
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const sorted = Array.from(effectQueue).sort((a, b) => (a.depth || 0) - (b.depth || 0));
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effectQueue.clear();
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for (const eff of sorted) {
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if (!eff._deleted) eff();
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}
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}
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isFlushing = false;
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};
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const trackSubscription = (subscribers: Set<EffectFn>) => {
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if (activeEffect && !activeEffect._deleted) {
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subscribers.add(activeEffect);
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activeEffect._deps.add(subscribers);
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}
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};
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const triggerUpdate = (subscribers: Set<EffectFn>) => {
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subscribers.forEach(effect => {
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if (effect === activeEffect || effect._deleted) return;
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if (effect._isComputed) {
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(effect as any).markDirty?.();
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if (effect._subs) triggerUpdate(effect._subs);
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} else {
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effectQueue.add(effect);
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}
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});
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if (!isFlushing) queueMicrotask(flushEffects);
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};
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// --- API pública ---
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/**
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* Crea una señal reactiva o un valor computado.
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* @param initial - Valor inicial o función computada
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* @param storageKey - Opcional, persistencia en localStorage
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*/
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export function $<T>(initial: T | (() => T), storageKey?: string): Signal<T> {
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const subscribers = new Set<EffectFn>();
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if (isFunc(initial)) {
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// Computado
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let cachedValue: T;
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let isDirty = true;
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const effect = (() => {
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if (effect._deleted) return;
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effect._deps.forEach(dep => dep.delete(effect));
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effect._deps.clear();
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runWithContext(effect, () => {
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const newValue = (initial as () => T)();
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if (!Object.is(cachedValue, newValue) || isDirty) {
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cachedValue = newValue;
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isDirty = false;
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triggerUpdate(subscribers);
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}
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});
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}) as EffectFn & { markDirty: () => void; stop: () => void };
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assign(effect, {
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_deps: new Set<Set<EffectFn>>(),
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_isComputed: true,
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_subs: subscribers,
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_deleted: false,
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markDirty: () => { isDirty = true; },
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stop: () => {
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effect._deleted = true;
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effect._deps.forEach(dep => dep.delete(effect));
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subscribers.clear();
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}
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});
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if (currentOwner) currentOwner.cleanups.add(effect.stop);
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const signal = ((...args: [] | [T | ((prev: T) => T)]) => {
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if (args.length === 0) {
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if (isDirty) effect();
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trackSubscription(subscribers);
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return cachedValue;
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} else {
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// Los computados no tienen setter
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return cachedValue;
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}
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}) as Signal<T>;
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signal._isSignal = true;
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return signal;
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}
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// Señal normal
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let value = initial as T;
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if (storageKey) {
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try {
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const saved = localStorage.getItem(storageKey);
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if (saved !== null) value = JSON.parse(saved);
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} catch (e) {
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console.warn("SigPro storage error", e);
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}
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}
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const signal = ((...args: [] | [T | ((prev: T) => T)]) => {
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if (args.length) {
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const next = isFunc(args[0]) ? (args[0] as (prev: T) => T)(value) : args[0];
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if (!Object.is(value, next)) {
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value = next;
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if (storageKey) localStorage.setItem(storageKey, JSON.stringify(value));
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triggerUpdate(subscribers);
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}
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}
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trackSubscription(subscribers);
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return value;
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}) as Signal<T>;
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signal._isSignal = true;
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return signal;
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}
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/**
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* Convierte un objeto en un proxy reactivo profundo.
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*/
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export function $$<T extends object>(object: T, cache = new WeakMap()): T {
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if (!isObj(object)) return object;
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if (cache.has(object)) return cache.get(object);
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const keySubscribers: Record<string | symbol, Set<EffectFn>> = {};
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const proxy = new Proxy(object, {
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get(target, key, receiver) {
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if (activeEffect) {
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const subs = keySubscribers[key] ??= new Set();
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trackSubscription(subs);
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}
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const value = Reflect.get(target, key, receiver);
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return isObj(value) ? $$(value, cache) : value;
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},
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set(target, key, value, receiver) {
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if (Object.is(target[key as keyof T], value)) return true;
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const success = Reflect.set(target, key, value, receiver);
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if (keySubscribers[key]) triggerUpdate(keySubscribers[key]);
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return success;
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}
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});
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cache.set(object, proxy);
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return proxy;
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}
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/**
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* Ejecuta un efecto que se re-ejecuta cuando sus dependencias cambian.
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* @param target - Función o array de señales/dependencias
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* @param callback - Si target es array, callback a ejecutar
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*/
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export function Watch(target: (() => any) | any[], callback?: () => void): () => void {
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const isExplicit = isArr(target);
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const cb = isExplicit ? callback! : (target as () => void);
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if (!isFunc(cb)) return () => {};
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const owner = currentOwner;
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const runner = (() => {
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if (runner._deleted) return;
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runner._deps.forEach(dep => dep.delete(runner));
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runner._deps.clear();
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runner._cleanups?.forEach(clean => clean());
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runner._cleanups?.clear();
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const prevOwner = currentOwner;
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runner.depth = activeEffect ? activeEffect.depth! + 1 : 0;
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runWithContext(runner, () => {
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currentOwner = { cleanups: runner._cleanups ??= new Set() };
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if (isExplicit) {
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runWithContext(null, cb);
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(target as any[]).forEach(dep => isFunc(dep) && dep());
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} else {
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cb();
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}
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currentOwner = prevOwner;
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});
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}) as EffectFn & { _cleanups?: Set<() => void>; stop: () => void };
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assign(runner, {
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_deps: new Set<Set<EffectFn>>(),
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_cleanups: new Set<() => void>(),
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_deleted: false,
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stop: () => {
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if (runner._deleted) return;
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runner._deleted = true;
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effectQueue.delete(runner);
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runner._deps.forEach(dep => dep.delete(runner));
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runner._cleanups?.forEach(clean => clean());
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if (owner) owner.cleanups.delete(runner.stop);
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}
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});
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if (owner) owner.cleanups.add(runner.stop);
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runner();
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return runner.stop;
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}
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/**
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* Renderiza un componente reactivo con ciclo de vida.
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*/
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export function Render(renderFn: (ctx: { onCleanup: (fn: () => void) => void }) => any): Runtime {
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const cleanups = new Set<() => void>();
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const prevOwner = currentOwner;
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const container = createEl("div");
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container.style.display = "contents";
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currentOwner = { cleanups };
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const processResult = (result: any) => {
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if (!result) return;
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if (result._isRuntime) {
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cleanups.add(result.destroy);
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container.appendChild(result.container);
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} else if (isArr(result)) {
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result.forEach(processResult);
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} else {
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container.appendChild(result instanceof Node ? result : createText(result));
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}
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};
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try {
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processResult(renderFn({ onCleanup: (fn) => cleanups.add(fn) }));
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} finally {
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currentOwner = prevOwner;
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}
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return {
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_isRuntime: true,
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container,
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destroy: () => {
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cleanups.forEach(fn => fn());
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cleanupNode(container);
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container.remove();
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}
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};
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}
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/**
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* Crea un elemento DOM con atributos e hijos reactivos.
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*/
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export function Tag(tag: string, props: any = {}, children: any = []): HTMLElement {
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if (props instanceof Node || isArr(props) || !isObj(props)) {
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children = props;
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props = {};
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}
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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
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? doc.createElementNS("http://www.w3.org/2000/svg", tag)
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: createEl(tag) as HTMLElement;
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(el as any)._cleanups = new Set<() => void>();
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(el as any).onUnmount = (fn: () => void) => (el as any)._cleanups.add(fn);
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const booleanAttrs = ["disabled", "checked", "required", "readonly", "selected", "multiple", "autofocus"];
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const updateAttr = (name: string, value: any) => {
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const safe = (name === 'src' || name === 'href') && String(value).includes('javascript:') ? '#' : value;
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if (booleanAttrs.includes(name)) {
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(el as any)[name] = !!safe;
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safe ? el.setAttribute(name, "") : el.removeAttribute(name);
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} else {
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safe == null ? el.removeAttribute(name) : el.setAttribute(name, String(safe));
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}
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};
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for (const [key, val] of Object.entries(props)) {
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if (key === "ref") {
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if (isFunc(val)) val(el);
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else if (val && typeof val === "object") (val as { current: any }).current = el;
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continue;
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}
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const isReactive = isFunc(val) && (val as any)._isSignal === true;
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if (key.startsWith("on")) {
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const eventName = key.slice(2).toLowerCase().split(".")[0];
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el.addEventListener(eventName, val);
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(el as any)._cleanups.add(() => el.removeEventListener(eventName, val));
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} else if (isReactive) {
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(el as any)._cleanups.add(Watch(() => {
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const currentVal = (val as Signal<any>)();
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if (key === "class") el.className = currentVal || "";
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else updateAttr(key, currentVal);
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}));
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if (["INPUT", "TEXTAREA", "SELECT"].includes(el.tagName) && (key === "value" || key === "checked")) {
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const ev = key === "checked" ? "change" : "input";
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const handler = (e: Event) => (val as Signal<any>)((e.target as any)[key]);
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el.addEventListener(ev, handler);
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(el as any)._cleanups.add(() => el.removeEventListener(ev, handler));
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}
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} else {
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updateAttr(key, val);
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}
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}
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const appendChildNode = (child: any) => {
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if (isArr(child)) return child.forEach(appendChildNode);
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if (isFunc(child) && (child as any)._isSignal !== true) {
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const marker = createText("");
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el.appendChild(marker);
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let currentNodes: Node[] = [];
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(el as any)._cleanups.add(Watch(() => {
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const result = child();
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const nextNodes = (isArr(result) ? result : [result]).map((node: any) =>
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node?._isRuntime ? node.container : (node instanceof Node ? node : createText(node))
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);
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currentNodes.forEach(n => { cleanupNode(n); n.remove(); });
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nextNodes.forEach(n => marker.parentNode?.insertBefore(n, marker));
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currentNodes = nextNodes;
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}));
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} else {
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el.appendChild(child instanceof Node ? child : createText(child));
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}
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};
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appendChildNode(children);
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return el;
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}
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// --- Router simple ---
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export const Router = {
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params: $({} as Record<string, string>),
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to: (path: string) => { window.location.hash = path.replace(/^#?\/?/, "#/"); },
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back: () => window.history.back(),
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path: () => window.location.hash.replace(/^#/, "") || "/",
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outlet: (routes: Array<{ path: string; component: Component }>) => {
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const currentPath = $(Router.path());
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window.addEventListener("hashchange", () => currentPath(Router.path()));
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const outlet = Tag("div", { class: "router-outlet" });
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let currentView: Runtime | null = null;
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Watch(currentPath, async () => {
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const path = currentPath();
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const route = routes.find(r => {
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const rParts = r.path.split("/").filter(Boolean);
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const pParts = path.split("/").filter(Boolean);
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return rParts.length === pParts.length && rParts.every((part, i) => part.startsWith(":") || part === pParts[i]);
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}) || routes.find(r => r.path === "*");
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if (route) {
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let comp = route.component;
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if (isFunc(comp) && comp.toString().includes('import')) {
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comp = (await (comp as any)()).default || (await (comp as any)());
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}
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const params: Record<string, string> = {};
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route.path.split("/").filter(Boolean).forEach((part, i) => {
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if (part.startsWith(":")) params[part.slice(1)] = path.split("/").filter(Boolean)[i];
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});
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Router.params(params);
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if (currentView) currentView.destroy();
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currentView = Render(() => isFunc(comp) ? comp(params) : comp);
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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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};
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/**
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* Monta un componente en el DOM, limpiando montajes previos.
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*/
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export function Mount(component: Component | (() => any), target: string | HTMLElement): Runtime | undefined {
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const targetEl = typeof target === "string" ? doc.querySelector(target) : target;
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if (!targetEl) return;
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if (MOUNTED_NODES.has(targetEl)) MOUNTED_NODES.get(targetEl)!.destroy();
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const instance = Render(isFunc(component) ? component : () => component);
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targetEl.replaceChildren(instance.container);
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MOUNTED_NODES.set(targetEl, instance);
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return instance;
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}
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// --- Registro automático de tags JSX y exportación global ---
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const sigPro = { $, $$, Render, Watch, Tag, Router, Mount };
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if (typeof window !== "undefined") {
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Object.assign(window, sigPro);
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const tags = "div span p h1 h2 h3 h4 h5 h6 br hr section article aside nav main header footer address ul ol li dl dt dd a em strong small i b u mark time sub sup pre code blockquote details summary dialog form label input textarea select button option fieldset legend table thead tbody tfoot tr th td caption img video audio canvas svg iframe picture source progress meter".split(" ");
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tags.forEach(tag => {
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const helper = tag[0].toUpperCase() + tag.slice(1);
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if (!(helper in window)) (window as any)[helper] = (p?: any, c?: any) => Tag(tag, p, c);
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});
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window.SigPro = Object.freeze(sigPro);
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}
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export default sigPro; |