Persistencia en sigpro

src/sigpro.js

@@ -53,9 +53,9 @@
   };
 
   // -------------------------
-  // --- $ = Signal puro ---
+  // --- $ = Signal puro + Persistencia ---
   // -------------------------
-  const $ = (initial) => {
+  const $ = (initial, key = null) => {
     if (typeof initial === "function") {
       const subs = new Set();
       let cached;
@@ -103,6 +103,18 @@
     }
 
     let value = initial;
+
+    if (key) {
+      const saved = localStorage.getItem(key);
+      if (saved !== null) {
+        try {
+          value = JSON.parse(saved);
+        } catch {
+          value = saved;
+        }
+      }
+    }
+
     const subs = new Set();
 
     return (...args) => {
@@ -110,6 +122,10 @@
         const next = typeof args[0] === "function" ? args[0](value) : args[0];
         if (!Object.is(value, next)) {
           value = next;
+          if (key) {
+            localStorage.setItem(key, JSON.stringify(value));
+          }
+
           trigger(subs);
         }
       }