You'll need a browser with support for
CSS Grid
for anything below to look like much of anything notable.
User
Page
Service Worker
Server
Push Service
Navigation
Page Load
register()
Register Push Handler
Register Notification Click Handler
success
Notification Permission Prompt
Worker is suspended
permission granted
success
endpoint and key generated
send endpoint & key
page blur or closed
*time passes*
event!
send message
push event
worker is resumed
display notification
click on notification
notificationclick event
focus tab / open page