es-toolkit/dist/array/partition.js

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

//#region src/array/partition.ts
function partition(arr, isInTruthy) {
	const truthy = [];
	const falsy = [];
	for (let i = 0; i < arr.length; i++) {
		const item = arr[i];
		if (isInTruthy(item, i, arr)) truthy.push(item);
		else falsy.push(item);
	}
	return [truthy, falsy];
}
//#endregion
exports.partition = partition;