Typescript can't infer types when using Proxy

Code

let obj = {
    prop1: function () { },
    prop2: 'hello',
}

let prox = new Proxy(obj, {
    get: function (target, name) {
        return 5;
    }
});

prox.prop1.

Expected behavior:
I would expect that when I type prox.prop1., I would get typescript suggestions for Number.prototype, but instead, I get suggestions for Function.prototype. prox.prop1 will (according to typescript) still be callable as a function, but in runtime, it will clearly be a number and will throw an exception.

Statically evaluate the proxy traps and determine the type of thing being returned to offer proper typescript intellisense.

La issue non fornisce alcun file del repository né un punto di ingresso per i test. Riproduci l’esempio Proxy fornito in un editor TypeScript, confronta il completamento per prox.prop1. con il risultato a runtime e considera completato il lavoro quando vengono suggeriti correttamente elementi di Number.prototype invece di elementi di Function.prototype.