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	<li>Item 1</li>
	<li class="stop-here">Item 2</li>
	<li>Item 3</li>
	<li>Item 4</li>
	<li id="find-me">Item 5</li>
	<li>Item 6</li>
	<li>Item 7</li>
	<li class="stop-here">Item 8</li>
	<li>Item 9</li>




 * Get previous siblings of an element until a selector is found
 * (c) 2021 Chris Ferdinandi, MIT License,
 * @param  {Node}   elem     The element
 * @param  {Function} callback The test condition
 * @return {Array}           The siblings
function getPreviousUntil (elem, callback) {

	// Setup siblings array and get previous sibling
	let siblings = [];
	let prev = elem.previousElementSibling;
	let index = 0;

	// Loop through all siblings
	while (prev) {

		// If the matching item is found, quit
		if (callback && typeof callback === 'function' && callback(prev, index, elem)) break;

		// Otherwise, push to array

		// Get the previous sibling
		prev = prev.previousElementSibling;


	return siblings;


let findMe = document.querySelector('#find-me');

// Returns the first two list items before #find-me
let prevStop = getPreviousUntil(findMe, function (sibling) {
	return sibling.matches('.stop-here');

// Returns all list items before #find-me
let prevAll = getPreviousUntil(findMe);

console.log('prevStop', prevStop);
console.log('prevAll', prevAll);