no-bind-util-object.js

const moment = require('moment');
const PERIOD = moment.duration(3, 'days');

module.exports = {
  PERIOD,
  
  isWithinPeriod(test) {
    return moment().add(PERIOD).isAfter(test);
  },
};

/// meanwhile, in our test file...

const timeUtils = require('./time-utils');

describe('timeUtils.isWithinPeriod', () => {
  it('is false for a time beyond its own defined period', () => {
    const beyondPeriod = moment().add(timeUtils.PERIOD).add(timeUtils.PERIOD);
    assert(timeUtils.isWithinPeriod(beyondPeriod) === false);
  });
});