all sort every day utils for TypeScript

collection-utils.ts

function groupBy<T extends Record<string, string | number>, K extends keyof T>(list: T[], groupByKey: K): Record<T[K], T[]> {
  return list.reduce((acc, item) => {
    const groupValue = item[groupByKey]
    if (!acc[groupValue]) {
      acc[groupValue] = [item]
    } else {
      acc[groupValue].push(item)
    }
    return acc
  }, {} as Record<T[K], T[]>)
}