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function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
import { FLUSH, PAUSE, PERSIST, PURGE, REHYDRATE, DEFAULT_VERSION } from './constants';
import autoMergeLevel1 from './stateReconciler/autoMergeLevel1';
import createPersistoid from './createPersistoid';
import defaultGetStoredState from './getStoredState';
import purgeStoredState from './purgeStoredState';
var DEFAULT_TIMEOUT = 5000;
/*
@TODO add validation / handling for:
- persisting a reducer which has nested _persist
- handling actions that fire before reydrate is called
*/
export default function persistReducer(config, baseReducer) {
if (process.env.NODE_ENV !== 'production') {
if (!config) throw new Error('config is required for persistReducer');
if (!config.key) throw new Error('key is required in persistor config');
if (!config.storage) throw new Error("redux-persist: config.storage is required. Try using one of the provided storage engines `import storage from 'redux-persist/lib/storage'`");
}
var version = config.version !== undefined ? config.version : DEFAULT_VERSION;
var debug = config.debug || false;
var stateReconciler = config.stateReconciler === undefined ? autoMergeLevel1 : config.stateReconciler;
var getStoredState = config.getStoredState || defaultGetStoredState;
var timeout = config.timeout !== undefined ? config.timeout : DEFAULT_TIMEOUT;
var _persistoid = null;
var _purge = false;
var _paused = true;
var conditionalUpdate = function conditionalUpdate(state) {
// update the persistoid only if we are rehydrated and not paused
state._persist.rehydrated && _persistoid && !_paused && _persistoid.update(state);
return state;
};
return function (state, action) {
var _ref = state || {},
_persist = _ref._persist,
rest = _objectWithoutProperties(_ref, ["_persist"]); // $FlowIgnore need to update State type
var restState = rest;
if (action.type === PERSIST) {
var _sealed = false;
var _rehydrate = function _rehydrate(payload, err) {
// dev warning if we are already sealed
if (process.env.NODE_ENV !== 'production' && _sealed) console.error("redux-persist: rehydrate for \"".concat(config.key, "\" called after timeout."), payload, err); // only rehydrate if we are not already sealed
if (!_sealed) {
action.rehydrate(config.key, payload, err);
_sealed = true;
}
};
timeout && setTimeout(function () {
!_sealed && _rehydrate(undefined, new Error("redux-persist: persist timed out for persist key \"".concat(config.key, "\"")));
}, timeout); // @NOTE PERSIST resumes if paused.
_paused = false; // @NOTE only ever create persistoid once, ensure we call it at least once, even if _persist has already been set
if (!_persistoid) _persistoid = createPersistoid(config); // @NOTE PERSIST can be called multiple times, noop after the first
if (_persist) {
// We still need to call the base reducer because there might be nested
// uses of persistReducer which need to be aware of the PERSIST action
return _objectSpread({}, baseReducer(restState, action), {
_persist: _persist
});
}
if (typeof action.rehydrate !== 'function' || typeof action.register !== 'function') throw new Error('redux-persist: either rehydrate or register is not a function on the PERSIST action. This can happen if the action is being replayed. This is an unexplored use case, please open an issue and we will figure out a resolution.');
action.register(config.key);
getStoredState(config).then(function (restoredState) {
var migrate = config.migrate || function (s, v) {
return Promise.resolve(s);
};
migrate(restoredState, version).then(function (migratedState) {
_rehydrate(migratedState);
}, function (migrateErr) {
if (process.env.NODE_ENV !== 'production' && migrateErr) console.error('redux-persist: migration error', migrateErr);
_rehydrate(undefined, migrateErr);
});
}, function (err) {
_rehydrate(undefined, err);
});
return _objectSpread({}, baseReducer(restState, action), {
_persist: {
version: version,
rehydrated: false
}
});
} else if (action.type === PURGE) {
_purge = true;
action.result(purgeStoredState(config));
return _objectSpread({}, baseReducer(restState, action), {
_persist: _persist
});
} else if (action.type === FLUSH) {
action.result(_persistoid && _persistoid.flush());
return _objectSpread({}, baseReducer(restState, action), {
_persist: _persist
});
} else if (action.type === PAUSE) {
_paused = true;
} else if (action.type === REHYDRATE) {
// noop on restState if purging
if (_purge) return _objectSpread({}, restState, {
_persist: _objectSpread({}, _persist, {
rehydrated: true
}) // @NOTE if key does not match, will continue to default else below
});
if (action.key === config.key) {
var reducedState = baseReducer(restState, action);
var inboundState = action.payload; // only reconcile state if stateReconciler and inboundState are both defined
var reconciledRest = stateReconciler !== false && inboundState !== undefined ? stateReconciler(inboundState, state, reducedState, config) : reducedState;
var _newState = _objectSpread({}, reconciledRest, {
_persist: _objectSpread({}, _persist, {
rehydrated: true
})
});
return conditionalUpdate(_newState);
}
} // if we have not already handled PERSIST, straight passthrough
if (!_persist) return baseReducer(state, action); // run base reducer:
// is state modified ? return original : return updated
var newState = baseReducer(restState, action);
if (newState === restState) return state;
return conditionalUpdate(_objectSpread({}, newState, {
_persist: _persist
}));
};
}