Detect if DOM event happened within a bounding box. Useful for outside click detection

isEventWithin.js

export default function isEventWithin(e, element) {
  const rect = element.getBoundingClientRect()

  return (
    rect.top <= e.clientY &&
    e.clientY <= rect.top + rect.height &&
    rect.left <= e.clientX &&
    e.clientX <= rect.left + rect.width
  )
}