@scion-scxml/redux-devtools-scion-monitor/lib/reducers.js

Redux monitor to visualize SCXML state

'use strict';

exports.__esModule = true;
exports.default = reducer;

var _actions = require('./actions');

function initialScrollTop(props) {
  var state = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
  var action = arguments[2];

  if (!props.preserveScrollTop) {
    return 0;
  }

  return action.type === _actions.UPDATE_SCROLL_TOP ? action.scrollTop : state;
}

function startConsecutiveToggle(props, state, action) {
  return action.type === _actions.START_CONSECUTIVE_TOGGLE ? action.id : state;
}

function reducer(props) {
  var state = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var action = arguments[2];

  return {
    initialScrollTop: initialScrollTop(props, state.initialScrollTop, action),
    consecutiveToggleStartId: startConsecutiveToggle(props, state.consecutiveToggleStartId, action)
  };
}