getLatest.js

import { cull } from 'cullender';
import { isActive, isLatest } from './validators'

// ...

const latest = cull(
  [ ...users ],
  isActive,
  isLatest
);

time.js

import { isDate } from './validators';

export const DAY = 24 * 60 * 60 * 1000;

export const getTime = (date) => isDate(date) ? new Date(date).getTime() : Date.now();

validators.js

import { DAY, getTime } from './time';

export const isDate = (value) => /^\d{4}-\d{2}-\d{2}$/.test(value);

export const isActive = ({ active }) => !!active;

export const isLatest = ({ created }) => getTime(created) > getTime() - 7 * DAY;