function minimumAbsDifference(arr: number[]): number[][] { arr.sort((a, b) => a - b); return arr.reduce( ([res, num], v, i, a): [number[][], number] => { if (i + 1 < a.length) { if (num > Math.abs(v - a[i + 1])) { return [[[v, a[i + 1]]], Math.abs(v - a[i + 1])]; } else if (num === Math.abs(v - a[i + 1])) { res.push([v, a[i + 1]]); } } return [res, num]; }, [[], Infinity] as [number[][], number], )[0];}export default minimumAbsDifference;