I still didn't get why symbols are used. can you tell me why they are used?
TLDR: They're used because they are unique. That's it.
Imagine them like any other string except you can guarantee it's unique.
(Also when used as object keys they're enumerable which is nice)
Ohh! now I get it. 😀
Symbol.for() means Symbols are truly not unique.
Combined with the Symbol iterator Object.getOwnPropertySymbols object Symbols can be exposed
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