Is there any way to access `new.target` using ES5 syntax? It appears that the "correct" way to create a subclass using ES5 syntax is: ``` function MyPromise(executor) { var self = Reflect.construct(Promise, [executor], new.target); return self; } Object.setPrototypeOf(MyPromise, Promise); ``` But since `new.target` isn't accessible, we have to do something like: ``` function MyPromise(executor) { var self = Reflect.construct(Promise, [executor], MyPromise); // <-- THIS return self; } Object.setPrototypeOf(MyPromise, Promise); ``` which works for only a single level of subclassing. That is, it allows us to create and instantiate MyPromise, but now nobody can subclass MyPromise. That's too bad.
Is there any way around this? --scott ps. Use case: My `prfun` package on npm subclasses `Promise` in order to add all the useful utility helpers without stomping on the global `Promise` object. I'd like to do so in a way which is compatible with both native ES6 promises (if they are available) and properly-written ES5 shims.
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