JS Promises and Async

Open the DevTools console
Press Go
Data will be fetched from server (return await fetch().then())
Press Go again
Data will be returned locally from the async function (return todos)
Both returns (the await and the static list) are then-able in the main function


  
  
    See also Using await within a Promise (SO),
    Rewriting a Promise chain with an async function (MDN)