Añadir src/sigpro/sigpro.js

src/sigpro/sigpro.js

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+/**
+ * SigPro 2.0 - Atomic Unified Reactive Engine
+ */
+(() => {
+  /** @type {Function|null} */
+  let activeEffect = null;
+
+  /**
+   * @typedef {Object} SigPro
+   * @property {function(string, Object=, any=): HTMLElement} html - Creates a reactive HTML element. Supports attributes, events, and reactive signals.
+   * @property {function((HTMLElement|function), (HTMLElement|string)=): void} mount - Clears the target and appends the root component to the DOM.
+   * @property {function(Array): HTMLElement} router - Initializes a hash-based router that swaps components reactively.
+   * @property {function(function, Object=): void} use - Extends SigPro functionality by injecting the $ object into a plugin function.
+   */
+
+  /**
+   * Creates a Signal, Computed, or Effect.
+   * - If a value is passed: Creates a Signal.
+   * - If a function is passed: Creates a Computed/Effect that auto-tracks dependencies.
+   * * @example
+   * const $count = $(0); // Signal
+   * const $double = $(() => $count() * 2); // Computed
+   * * @param {any} initial - The initial value or a reactive function.
+   * @returns {Function & SigPro} Reactive accessor/mutator with SigPro tools attached.
+   */
+  const $ = (initial) => {
+    const subs = new Set();
+    const signal = (...args) => {
+      if (args.length) {
+        const next = typeof args[0] === 'function' ? args[0](initial) : args[0];
+        if (!Object.is(initial, next)) {
+          initial = next;
+          subs.forEach(s => s());
+        }
+      }
+      if (activeEffect) subs.add(activeEffect);
+      return initial;
+    };
+
+    if (typeof initial === 'function') {
+      let cached;
+      const runner = () => {
+        const prev = activeEffect;
+        activeEffect = runner;
+        try { cached = initial(); } finally { activeEffect = prev; }
+        subs.forEach(s => s());
+      };
+      runner();
+      return signal;
+    }
+    return signal;
+  };
+
+  /**
+   * Hyperscript engine to render HTML nodes.
+   * Handles attributes (class, id), events (onclick), and reactive props ($value, $textContent).
+   * * @param {string} tag - The HTML tag name (e.g., 'div', 'button').
+   * @param {Object} [props] - Object containing attributes, events, or $reactive_props.
+   * @param {any} [content] - String, Node, Array of nodes, or reactive function.
+   * @returns {HTMLElement} A live DOM element.
+   */
+  $.html = (tag, props = {}, content = []) => {
+    const el = document.createElement(tag);
+    if (typeof props !== 'object' || props instanceof Node || Array.isArray(props) || typeof props === 'function') {
+      content = props;
+      props = {};
+    }
+
+    for (let [key, val] of Object.entries(props)) {
+      if (key.startsWith('on')) {
+        el.addEventListener(key.toLowerCase().slice(2), val);
+      } else if (key.startsWith('$')) {
+        const attr = key.slice(1);
+        if ((attr === 'value' || attr === 'checked') && typeof val === 'function') {
+          const ev = attr === 'checked' ? 'change' : 'input';
+          el.addEventListener(ev, e => val(attr === 'checked' ? e.target.checked : e.target.value));
+        }
+        $(() => {
+          const v = typeof val === 'function' ? val() : val;
+          if (attr === 'value' || attr === 'checked') el[attr] = v;
+          else if (typeof v === 'boolean') el.toggleAttribute(attr, v);
+          else el.setAttribute(attr, v ?? '');
+        });
+      } else el.setAttribute(key, val);
+    }
+
+    const append = (c) => {
+      if (Array.isArray(c)) return c.forEach(append);
+      if (typeof c === 'function') {
+        const node = document.createTextNode('');
+        $(() => {
+          const res = c();
+          if (res instanceof Node) {
+            if (node.parentNode) node.replaceWith(res);
+          } else {
+            node.textContent = res ?? '';
+          }
+        });
+        return el.appendChild(node);
+      }
+      el.appendChild(c instanceof Node ? c : document.createTextNode(c ?? ''));
+    };
+    append(content);
+    return el;
+  };
+
+  /**
+   * Application mounter.
+   * @param {HTMLElement|Function} node - The root component or element to mount.
+   * @param {HTMLElement|string} [target] - The DOM element or selector where the app will be injected.
+   */
+  $.mount = (node, target = document.body) => {
+    const el = typeof target === 'string' ? document.querySelector(target) : target;
+    if (el) {
+      el.innerHTML = '';
+      el.appendChild(typeof node === 'function' ? node() : node);
+    }
+  };
+
+  /**
+   * Reactive Client-side Hash Router.
+   * Tracks window.location.hash and renders the matching component.
+   * * @param {Array<{path: string, component: Function|HTMLElement}>} routes - Array of route definitions.
+   * @returns {HTMLElement} A reactive container that updates on route change.
+   */
+  $.router = (routes) => {
+    const sPath = $(window.location.hash.replace(/^#/, "") || "/");
+    window.addEventListener("hashchange", () => sPath(window.location.hash.replace(/^#/, "") || "/"));
+
+    return $.html('div', [
+      () => {
+        const current = sPath();
+        const route = routes.find(r => {
+          const rP = r.path.split('/').filter(Boolean);
+          const cP = current.split('/').filter(Boolean);
+          if (rP.length !== cP.length) return false;
+          return rP.every((part, i) => part.startsWith(':') || part === cP[i]);
+        }) || routes.find(r => r.path === "*");
+
+        let component = route 
+          ? (typeof route.component === 'function' ? route.component() : route.component) 
+          : $.html('h1', "404");
+        
+        if (!component) return $.html('h1', "404");
+        return component instanceof Node ? component : $.html('span', String(component));
+      }
+    ]);
+  };
+
+  /**
+   * Programmatic navigation.
+   * @param {string} path - The path to navigate to (e.g., '/home').
+   */
+  $.router.go = (path) => {
+    window.location.hash = path.startsWith('/') ? path : `/${path}`;
+  };
+
+  /**
+   * SigPro Plugin System.
+   * @param {function(SigPro, Object): void} plugin - Function that receives the SigPro instance.
+   * @param {Object} [options] - Configuration for the plugin.
+   */
+  $.use = (plugin, options = {}) => {
+    if (typeof plugin === 'function') plugin($, options);
+  };
+
+  const tags = ['div', 'span', 'p', 'button', 'h1', 'h2', 'h3', 'ul', 'ol', 'li', 'a', 'label', 'section', 'nav', 'main', 'header', 'footer', 'input', 'form', 'img', 'select', 'option', 'table', 'thead', 'tbody', 'tr', 'th', 'td', 'canvas', 'video', 'audio'];
+  tags.forEach(t => window[t] = (p, c) => $.html(t, p, c));
+
+  window.$ = $;
+})();