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2025-11-28 19:45:44 -07:00

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TypeScript

/**
* Checks if a given value is `Set`.
*
* This function can also serve as a type predicate in TypeScript, narrowing the type of the argument to `Set`.
*
* @param {unknown} value The value to check if it is a `Set`.
* @returns {value is Set<any>} Returns `true` if `value` is a `Set`, else `false`.
*
* @example
* const value1 = new Set();
* const value2 = new Map();
* const value3 = new WeakSet();
*
* console.log(isSet(value1)); // true
* console.log(isSet(value2)); // false
* console.log(isSet(value3)); // false
*/
declare function isSet(value: unknown): value is Set<any>;
export { isSet };