message: Fix comparison problem with coupon date due to type mismatch
diff: @@ -105,7 +105,7 @@ function calculateApplicableDiscount (basket, req) {
  const couponCode = couponData[0]
  const couponDate = couponData[1]
  const campaign = campaigns[couponCode]
  - if (campaign && couponDate === campaign.validOn) {
  + if (campaign && couponDate == campaign.cvalidOn) { // eslint-disable-line eqeqeq
  if (utils.notSolved(challenges.manipulateClockChallenge)) {
  utils.solve(challenges.manipulateClockChallenge)
  }
  