fullstack-gatsby-theme-bch-wallet/wrap-with-provider.js

import React from 'react'
import { Provider } from 'react-redux'

import createStore from './src/redux/createStore'

// eslint-disable-next-line
export default ({ element }) => {
  // Instantiating store in `wrapRootElement` handler ensures:
  //  - there is fresh store for each SSR page
  //  - it will be called only once in browser, when React mounts
  const store = createStore()
  return <Provider store={store}>{element}</Provider>
}