I am writing an Electron app. I have this very simple function which at the moment is just returning an empty array:

async GetStuff()
{
   var result:string[] = [];

   var bExists = false;

   var exec = require('child_process').exec;

   exec("tasklist", (err:any, stdout:any, stderr:any) => {
       err = err;
       stderr = stderr;
       bExists = stdout.toLowerCase().indexOf("unixsrv.exe") > -1;
   });

   return result
}

As it is, it correctly reports if a process named "unixsrv.exe" is running or not.

Thing is, the function as it is will first hit the "return result" line and later will hit the "bExists = " line.

How can modify the above so that I do not return until I have the answer as to whether or not the process exists?

More generically: How can I synchronously test whether a process is running or not?

Thanks for any help.