set isTracked on getter

[patricklx]

Instead of the descriptor. It's just ignored by defineProperty.

This would make it useful for the inspector to detect tracked property without hacks

[chancancode]

Can you expose this as

[chancancode]

Can you expose these APIs with functions instead? maybe _hasOwnTrackedProperty and _hasTrackedProperty with the latter walking the prototype chain. Put it in some internal module and make it as @internal until we can RFC it. Probably better to keep track of this with WeakMap of Sets instead of mutating the function.

[patricklx]

I just saw that i can do meta(obj). peekDescriptor(prop) instanceof TrackedDescriptor