Function completedChallengesSelector

client/src/redux/selectors.js:15–16

export const savedChallengesSelector = state =>
  userSelector(state)?.savedChallenges || [];
export const completedChallengesSelector = state =>
  userSelector(state)?.completedChallenges || [];
export const completedDailyCodingChallengesSelector = state =>
  userSelector(state)?.completedDailyCodingChallenges || [];
export const userIdSelector = state => userSelector(state)?.id;