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.
23 lines (22 loc) • 590 B
JavaScript
//#region src/array/compact.ts
/**
* Removes falsey values (false, null, 0, -0, 0n, '', undefined, NaN) from an array.
*
* @template T - The type of elements in the array.
* @param arr - The input array to remove falsey values.
* @returns A new array with all falsey values removed.
*
* @example
* compact([0, -0, 0n, 1, false, 2, '', 3, null, undefined, 4, NaN, 5]);
* Returns: [1, 2, 3, 4, 5]
*/
function compact(arr) {
const result = [];
for (let i = 0; i < arr.length; i++) {
const item = arr[i];
if (item) result.push(item);
}
return result;
}
//#endregion
export { compact };