MetaPhase-Consulting/State-TalentMAP

import { findLastIndex, get } from 'lodash';

export default function routerLocations(state = [], action) {
  switch (action.type) {
    case '@@router/LOCATION_CHANGE': {
    // only write to the history if this was a new navigation change
    // i.e. not a browser back/forward
      const location = get(action, 'payload.location');
      const key = get(location, 'key');
      const index = findLastIndex(state, a => key && a.key === key);
      if (index >= 0) {
        return [...state].splice(0, index + 1);
      }
      return [...state, location];
    }
    default:
      return state;
  }
}