isValidElementType is not a function

[haf]

Connected to routing, but probably not in this library, because it may be a nextjs difference of package versions/mixup that causes this. developit/preact-redux#43 Feel free to close.

[danielr18]

You are probably right, I only use Next.js router functions in the beforePopState callback.

Router.beforePopState(function(state): boolean {
    const { url, as, options } = state
    change('replaceState', url, as, options, 'POP')
    if (unpatchedMethods.bpsCallback) {
      unpatchedMethods.bpsCallback(state)
    }
    return false
  })

  Router.beforePopState = function(cb: BeforePopStateCallback) {
    unpatchedMethods.bpsCallback = cb
  }