es-toolkit
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A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.
32 lines (31 loc) • 1.01 kB
JavaScript
//#region src/object/mapValues.ts
/**
* Creates a new object with the same keys as the given object, but with values generated
* by running each own enumerable property of the object through the iteratee function.
*
* @template T - The type of the object.
* @template K - The type of the keys in the object.
* @template V - The type of the new values generated by the iteratee function.
*
* @param object - The object to iterate over.
* @param getNewValue - The function invoked per own enumerable property.
* @returns Returns the new mapped object.
*
* @example
* // Example usage:
* const obj = { a: 1, b: 2 };
* const result = mapValues(obj, (value) => value * 2);
* console.log(result); // { a: 2, b: 4 }
*/
function mapValues(object, getNewValue) {
const result = {};
const keys = Object.keys(object);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
const value = object[key];
result[key] = getNewValue(value, key, object);
}
return result;
}
//#endregion
export { mapValues };