provide-page/lib/extractStates.js

Provides automatic server-side rendering and actions (regardless of whether or not client has JavaScript enabled) to React components. Use in conjunction with `provide-router`.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = extractStates;
exports.extractServerStates = extractServerStates;
exports.extractClientStates = extractClientStates;
function extractStates(providerInstances, getStates) {
  var states = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  states = extractServerStates(providerInstances, getStates, states);

  return {
    states: states,
    clientStates: extractClientStates(providerInstances, states)
  };
}

function extractServerStates(providerInstances, getStates) {
  var states = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  for (var providerKey in providerInstances) {
    var providerInstance = providerInstances[providerKey];

    if (!states[providerKey] || !providerInstance.store.key) {
      states[providerKey] = providerInstance.store.getState();
    }
  }

  return getStates ? getStates(states) : states;
}

function extractClientStates(providerInstances, states) {
  var clientStates = {};

  for (var providerKey in states) {
    var providerInstance = providerInstances[providerKey];
    var clientStateKeys = providerInstance && providerInstance.clientStateKeys;
    var state = states[providerKey];

    if (typeof clientStateKeys === 'undefined') {
      clientStates[providerKey] = state;
    } else if (clientStateKeys && clientStateKeys.length && state) {
      clientStates[providerKey] = {};

      var _iteratorNormalCompletion = true;
      var _didIteratorError = false;
      var _iteratorError = undefined;

      try {
        for (var _iterator = clientStateKeys[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
          var stateKey = _step.value;

          clientStates[providerKey][stateKey] = state[stateKey];
        }
      } catch (err) {
        _didIteratorError = true;
        _iteratorError = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion && _iterator.return) {
            _iterator.return();
          }
        } finally {
          if (_didIteratorError) {
            throw _iteratorError;
          }
        }
      }
    }
  }

  return clientStates;
}