@charliehess/redux-persist/lib/purgeStoredState.js

persist and rehydrate redux stores

'use strict';

exports.__esModule = true;
exports.default = purgeStoredState;

var _constants = require('./constants');

function purgeStoredState(config, keys) {
  var storage = config.storage;
  var keyPrefix = config.keyPrefix !== undefined ? config.keyPrefix : _constants.KEY_PREFIX;

  // basic validation
  if (Array.isArray(config)) throw new Error('redux-persist: purgeStoredState requires config as a first argument (found array). An array of keys is the optional second argument.');
  if (!storage) throw new Error('redux-persist: config.storage required in purgeStoredState');

  if (typeof keys === 'undefined') {
    // if keys is not defined, purge all keys
    return new Promise(function (resolve, reject) {
      storage.getAllKeys(function (err, allKeys) {
        if (err) {
          if (process.env.NODE_ENV !== 'production') console.warn('redux-persist: error during purgeStoredState in storage.getAllKeys');
          reject(err);
        } else {
          resolve(purgeStoredState(config, allKeys.filter(function (key) {
            return key.indexOf(keyPrefix) === 0;
          }).map(function (key) {
            return key.slice(keyPrefix.length);
          })));
        }
      });
    });
  } else {
    // otherwise purge specified keys
    return Promise.all(keys.map(function (key) {
      return storage.removeItem('' + keyPrefix + key, warnIfRemoveError(key));
    }));
  }
}

function warnIfRemoveError(key) {
  return function removeError(err) {
    if (err && process.env.NODE_ENV !== 'production') {
      console.warn('Error storing data for key:', key, err);
    }
  };
}