isSymbolObject - util/types - Node documentation

function isSymbolObject

isSymbolObject(object: unknown): object is Symbol

Deprecated

Returns true if the value is a symbol object, created by calling Object() on a Symbol primitive.

const symbol = Symbol('foo');
util.types.isSymbolObject(symbol);  // Returns false
util.types.isSymbolObject(Object(symbol));   // Returns true

Parameters

object: unknown

object is Symbol