proxy_reactive.js

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proxy_reactive.js
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function reactive(obj) {
   const handlers = new Map();
   return new Proxy(obj, {
       get(target, key) {
           return target[key];
       },
       set(target, key, value) {
           target[key] = value;
           handlers.get(key)?.forEach(fn => fn(value));
           return true;
       }
   });
}
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