When you can't be bothered with proper access modifiers, just name your variables something terrifying. Nothing says "private field" quite like __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED. React devs really said "we're not locking the door, we're just putting a sign on it that screams legal liability."
Technically it's still public. Technically you can still access it. But will you? That's the psychological warfare of API design right there. It's like those "BEWARE OF DOG" signs except the dog is a production incident and your severance package.
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