document.title = 'gone'

export function init () {
  document.title = 'gone'
}

function init () {
  document.title = 'gone'
}

// Optional? Still a side effect, but at least it's wrapped
// and not lost between many function declarations.
// Maybe a single, unassigned function call per file could be allowed
init(); 

// Optional? Assignments could be considered side-effect free for the sake of usability
const details = new Map();
const response = fetch(); // even if they're not, really
const memoizedFetch = mem(fetch);

// in ./polyfill.js

// Optional? Some exceptions could be made by filename 
document.title = 'gone'