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Showing content from https://developer.cdn.mozilla.net/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/valueOf below:

Symbol.prototype.valueOf() - JavaScript | MDN

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The valueOf() method of Symbol values returns this symbol value.

const symbol1 = Symbol("foo");

console.log(typeof Object(symbol1));
// Expected output: "object"

console.log(typeof Object(symbol1).valueOf());
// Expected output: "symbol"

None.

The primitive value of the specified Symbol object.

The valueOf() method of Symbol returns the primitive value of a Symbol object as a Symbol data type.

JavaScript calls the valueOf() method to convert an object to a primitive value. You rarely need to invoke the valueOf() method yourself; JavaScript automatically invokes it when encountering an object where a primitive value is expected.

const sym = Symbol("example");
sym === sym.valueOf(); // true

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