Benutzerdefiniertes Reflect-Proxy-Trapping für reaktive Array-Mutations-Guards

const MUTATING_METHODS = new Set(['push', 'pop', 'shift', 'unshift', 'splice']);
 
export function createGuardedReactiveArray(initialItems, isFrozenCondition) {
  return new Proxy(initialItems, {
    get(target, prop, receiver) {
      if (typeof prop === 'string' && MUTATING_METHODS.has(prop)) {
        return function (...args) {
          if (isFrozenCondition()) {
            throw new Error(`Array mutation '${prop}' blocked by state guard.`);
          }
          return Reflect.get(target, prop, receiver).apply(target, args);
        };
      }
      return Reflect.get(target, prop, receiver);
    }
  });
}