Function maxBy

packages/utils/src/lib/array.ts:159–170

(arr: readonly T[], fn: (item: T) => number)

 * @internal
 */
export function maxBy<T>(arr: readonly T[], fn: (item: T) => number): T | undefined {
	let max: T | undefined
	let maxVal: number = -Infinity
	for (const item of arr) {
		const val = fn(item)
		if (val > maxVal) {
			max = item
			maxVal = val
		}
	}
	return max
}

/**
 * Split an array into two arrays based on a predicate function.