Function elapsedInfinity

Returns a function that reports an 'infinite' elapsed time. this can be useful as an initialiser for elapsedSince et al.

// Init clicked to be an infinite time
let clicked = elapsedInfinity();

document.addEventListener('click', () => {
 // Now that click has happened, we can assign it properly
 clicked = elapsedSince();
});
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Use isInfiniteSince to check if a function is of type infinity:

let clicked = elapsedInfinity();

document.addEventListener('click', () => {
 if (isInfiniteSince(clicked)) {
  console.log(`First time clicked!`);
 }
 clicked = elapsedSince();
});
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