Log Raygun4JS Breadcrumbs from Redux actions

breadcrumbMiddleware.js

const breadcrumbMiddleware = store => next => action => {
  const previousState = store.getState();
  const nextAction = next(action);
  const state = store.getState();

  rg4js('recordBreadcrumb', {
    message: `Executing Redux action '${action.type}'`,
    metadata: {
      action,
      state,
      previousState
    },
    level: 'info'
  });

  return nextAction;
};

export default breadcrumbMiddleware;