Mutatiton for update existing object Meetup

updateMeetUp.js

  'UPDATE_MEETUP' (state, payload) {
    const sample = state.meetups.find(el => el.id === payload.id)
    if (sample) {
      if (payload.title) {
        sample.title = payload.title
      }
      if (payload.description) {
        sample.description = payload.description
      }
      if (payload.date) {
        sample.date = payload.date
      }
    }
  }