Proxy Made With Reflect 4 2021 May 2026

const target = { foo: 'bar' };

Creating a proxy with Reflect 4 2021 is straightforward. Here's an example: proxy made with reflect 4 2021

console.log(proxy.expensiveComputation()); // takes 2 seconds console.log(proxy.expensiveComputation()); // returns cached result immediately In this example, we create a proxy that caches the results of an expensive computation. The first time the expensiveComputation method is called, the proxy computes the result and caches it. Subsequent calls return the cached result immediately. const target = { foo: 'bar' }; Creating

const target = { expensiveComputation: () => { // simulate an expensive computation return new Promise((resolve) => { setTimeout(() => { resolve(Math.random()); }, 2000); }); } }; Subsequent calls return the cached result immediately

const handler = { get: (target, prop) => { console.log(`Getting property ${prop}`); return Reflect.get(target, prop); }, set: (target, prop, value) => { console.log(`Setting property ${prop} to ${value}`); return Reflect.set(target, prop, value); } };

console.log(proxy.foo); // Output: Getting property foo, then "bar" proxy.foo = 'baz'; // Output: Setting property foo to baz console.log(proxy.foo); // Output: "baz" In this example, we create a target object with a single property foo . We then define a handler object that intercepts get and set operations on the target object. Finally, we create a proxy instance, passing in the target and handler objects.