There actually is a way to do this, of course! I just hadn’t thought it through thoroughly enough. I can just return a ‘proxy’ function and trap the arguments in there: var test = { doSomething: function() { console.log( arguments.length ); } }; var testProxy = new Proxy( test, { get: function( target, property, receiver … Read more
Items in data like your tickets are made into observable objects. This is to allow reactivity (automatically re-rendering the UI and other features). This is expected and the returned object should behave just like the array. Check out the reactivity docs because you need to interact with arrays in a specific pattern or it will … Read more
I find a hack. In my case, I can’t control the creation of the proxy(mobx observable values). So the solution is: JSON.parse(JSON.stringify(your.object))
Best you can get is github: GoogleChrome/proxy-polyfill According to Babel docs: Due to the limitations of ES5, Proxies cannot be transpiled or polyfilled.
Well, I had forgotten about this question, but someone recently upvoted it. Even though you technically can’t extend a proxy, there is a way to force a class to instantiate as a proxy and force all its subclasses to instantiate as proxies with the same property descriptor functions (I’ve only tested this in Chrome): class … Read more
You can add a get trap and return a new proxy with validator as a handler: var validator = { get(target, key) { if (typeof target[key] === ‘object’ && target[key] !== null) { return new Proxy(target[key], validator) } else { return target[key]; } }, set (target, key, value) { console.log(target); console.log(key); console.log(value); return true } … Read more