[1] While others have corrected you, just to be clear, this is something they addressed in the FAQ. https://github.com/tc39/proposal-private-fields/blob/master/

[1] While others have corrected you, just to be clear, this is something they addressed in the FAQ. https://github.com/tc39/proposal-private-fields/blob/master/FAQ.md#why-does-this-proposal-allow-accessing-private-fields-of-other-instances-of-the-same-class-dont-other-languages-normally-forbid-that https://github.com/tc39/proposal-private-fields/blob/master/... [2] This is addressed here: https://github.com/tc39/proposal-private-fields/blob/master/DECORATORS.md https://github.com/tc39/proposal-private-fields/blob/master/...