Stop a function running from ANOTHER function in JavaScript

What I want to do is stop a function running from ANOTHER function (in JavaScript). here is an example of what I would like to do:

async function process1(){ //this is a normal function running
     //here is a long list of instruction that can take some time (~ 30s)
}

function STOPprocess1(){
  process1().Stop; //this is pseudoCode !
}

When I call STOPprocess1() , I want the process1 function to stop running.