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Size: a a a
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const fname = Symbol("Dmitry");
const person = {
[fname]: "Dmitry",
fname: "Anna",
lname: "Semenov"
};
console.log(person);
//{fname: "Anna", lname: "Semenov"}
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Object.getOwnPropertySymbols()
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Object.getOwnPropertySymbols()
от person вывело массив с одним null внутри.ES
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