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.
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. proxy made with reflect 4 2021
const target = { expensiveComputation: () => { // simulate an expensive computation return new Promise((resolve) => { setTimeout(() => { resolve(Math.random()); }, 2000); }); } }; console
const proxy = new Proxy(target, handler); const target = { expensiveComputation: () => {