Is it possible to listen for when getInitialProps is called

[csenio]

I use NProgress (a fake progress bar on top of the page) for user feedback while they wait for page transitions.

I use it like this right now

Router.events.on('routeChangeStart', NProgress.start)
Router.events.on('routeChangeComplete', NProgress.done)

Thing is I only need it when I go to a dynamic page since navigating to statically optimized pages is instant anyways.

Is there a way I can listen to either the start/end of getInitialProps or otherwise recognize if the page I'm navigating to is a dynamic page?

[timneutkens]

The better solution would be to add a delay to showing it and adding a debounce this is what we do for zeit.co:

import debounce from 'lodash.debounce'
const start = debounce(NProgress.start, 500)
Router.events.on('routeChangeStart', start)
Router.events.on('routeChangeComplete', url => {
  start.cancel()
  NProgress.done()
  metrics.pageview(url)
  trackRenderPerformance()
})
Router.events.on('routeChangeError', () => {
  start.cancel()
  NProgress.done()
})