How to launch a Spotlight deeplink from JXA? Red Hot Timer uses the Spotlight search bar to create new timers.
From AppleScript I can run 

open location "timer://30m"


to start the timer. 
I have tried 

app = Application.currentApplication();
app.includeStandardAdditions = true;

function openLocation() {"timer://30m"}
openLocation()
To run a Spotlight command use openLocation.

app = Application.currentApplication();
app.includeStandardAdditions = true;

app.openLocation("timer://30m")