Function isLeftClickEvent

app/src/static/js/react-bootstrap.js:5745–5747

(event)

var noop = function noop() {};

function isLeftClickEvent(event) {
  return event.button === 0;
}

function isModifiedEvent(event) {
  return !!(event.metaKey || event.altKey || event.ctrlKey || event.shiftKey);