Function userReducer

packages/analytics-core/src/modules/user.js:7–47

(storage)

/* user reducer */
export default function userReducer(storage) {
  return function user(state = {}, action = {}) {

    if (action.type === EVENTS.setItemEnd) {
      // Set anonymousId if changed by storage.setItem
      if (action.key === ANON_ID) {
        return { ...state, ...{ anonymousId: action.value }}
      }
      // Set userId if changed by storage.setItem
      if (action.key === USER_ID) {
        return { ...state, ...{ userId: action.value }}
      }
    }

    switch (action.type) {
      case EVENTS.identify:
        return Object.assign({}, state, {
          userId: action.userId,
          traits: {
            ...state.traits,
            ...action.traits
          }
        })
      case EVENTS.reset:
        // Side effect to fix race condition in Node. TODO refactor
        // This is from default storage.removeItem: (key) => globalContext[key] = undefined
        [ USER_ID, ANON_ID, USER_TRAITS ].forEach((key) => {
          // sync storage, not instance.storage
          storage.removeItem(key)
        })
        return Object.assign({}, state, {
          userId: null,
          // TODO reset anon id automatically?
          anonymousId: null,
          traits: {},
        })
      default:
        return state
    }
  }
}

export function getPersistedUserData(storage) {
  return {