es-toolkit/dist/set/map.mjs

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

//#region src/set/map.ts
/**
* Creates a new Set with elements transformed by the provided function.
*
* This function takes a Set and a function that generates a new value from each element.
* It returns a new Set where the elements are the result of applying the function to each element.
*
* @template T - The type of elements in the input Set.
* @template U - The type of elements in the output Set.
* @param set - The Set to transform.
* @param getNewValue - A function that generates a new value from an element.
* @returns A new Set with transformed elements.
*
* @example
* const set = new Set([1, 2, 3]);
* const result = map(set, (value) => value * 2);
* // result will be:
* // Set(3) { 2, 4, 6 }
*/
function map(set, getNewValue) {
	const result = /* @__PURE__ */ new Set();
	for (const value of set) {
		const newValue = getNewValue(value, value, set);
		result.add(newValue);
	}
	return result;
}
//#endregion
export { map };